query: what is the si unit of measurement for volume

pos: Litre Litre The litre (international spelling) or liter (American spelling) (symbols L or l) is an SI accepted metric system unit of volume equal to 1 cubic decimetre (dm), 1,000 cubic centimetres (cm) or 1/1,000 cubic metre. A cubic decimetre (or litre) occupies a volume of 10 cm×10 cm×10 cm (see figure) and is thus equal to one-thousandth of a cubic metre. The original French metric system used the litre as a base unit. The word "litre" is derived from an older French unit, the "litron", whose name came from Greek — where it was a unit of weight, not volume

pos: Work (physics) work, but this can be confused with the unit newton-metre, which is the measurement unit of torque. Usage of N⋅m is discouraged by the SI authority, since it can lead to confusion as to whether the quantity expressed in newton metres is a torque measurement, or a measurement of work. Non-SI units of work include the newton-metre, erg, the foot-pound, the foot-poundal, the kilowatt hour, the litre-atmosphere, and the horsepower-hour. Due to work having the same physical dimension as heat, occasionally measurement units typically reserved for heat or energy content, such as therm, BTU and Calorie, are utilized as a

pos: Litre reservoir capacities and river flows, for larger volumes of fluids, such as annual consumption of tap water, lorry (truck) tanks, or swimming pools, the cubic metre is the general unit. It is also generally for all volumes of a non-liquid nature. Fields where the litre and millilitre are used as a measurement for non-liquid volumes, where the capacity of the container is indicated, include: Litre The litre (international spelling) or liter (American spelling) (symbols L or l) is an SI accepted metric system unit of volume equal to 1 cubic decimetre (dm), 1,000 cubic centimetres (cm) or 1/1,000 cubic metre.

pos: Chinese units of measurement among other things. In imperial times, the physical standard for these was the jialiang. In the case of volume, the market and metric "shēng" coincide, being equal to one litre as shown in the table. The Chinese standard SI prefixes (for "milli-", "centi-", etc.) may be added to this word "shēng". Units of volume can also be obtained from any standard unit of length using the prefix "lìfāng" ("cubic"), as in "lìfāng mǐ" for a cubic metre. These units are used to measure the mass of objects. They are also famous for measuring monetary objects such as gold and silver.

pos: Cubic centimetre Cubic centimetre A cubic centimetre (or cubic centimeter in US English) (SI unit symbol: cm; non-SI abbreviations: cc and ccm) is a commonly used unit of volume that extends the derived SI-unit cubic metre, and corresponds to the volume of a cube that measures 1 cm × 1 cm × 1 cm. One cubic centimetre corresponds to a volume of of a cubic metre, or of a litre, or one millilitre; thus, 1 cm ≡ 1 mL. The mass of one cubic centimetre of water at 3.98 °C (the temperature at which it attains its maximum density) is closely equal

pos: Cubic centimetre Cubic centimetre A cubic centimetre (or cubic centimeter in US English) (SI unit symbol: cm; non-SI abbreviations: cc and ccm) is a commonly used unit of volume that extends the derived SI-unit cubic metre, and corresponds to the volume of a cube that measures 1 cm × 1 cm × 1 cm. One cubic centimetre corresponds to a volume of of a cubic metre, or of a litre, or one millilitre; thus, 1 cm ≡ 1 mL. The mass of one cubic centimetre of water at 3.98 °C (the temperature at which it attains its maximum density) is closely equal

pos: Litre favour of the current one. Although the litre is not an SI unit, it is accepted by the CGPM (the standards body that defines the SI) for use with the SI. CGPM defines the litre and its acceptable symbols. A litre is equal in volume to the millistere, an obsolete non-SI metric unit customarily used for dry measure. Litres are most commonly used for items (such as fluids and solids that can be poured), which are measured by the capacity or size of their container, whereas cubic metres (and derived units) are most commonly used for items measured either by

pos: Gram per litre Gram per litre A gram per litre or gram per liter (g/L or g/l) is a unit of measurement of mass concentration that shows how many grams of a certain substance are present in one litre of a (usually liquid or gaseous) mixture. It is not an SI unit – the SI unit of mass concentration is kilogram per cubic metre, which is equivalent. Metric prefixes are often applied, giving units like milligrams per litre (mg/L) or micrograms per decilitre (µg/dL). When measuring concentration in water, parts per million is an older expression of mg/L, since one litre of water

pos: Litre — via Latin, and which equalled approximately 0.831 litres. The litre was also used in several subsequent versions of the metric system and is accepted for use with the SI, although not an SI unit — the SI unit of volume is the cubic metre (m). The spelling used by the International Bureau of Weights and Measures is "litre", a spelling which is shared by almost all English-speaking countries. The spelling "liter" is predominantly used in American English. One litre of liquid water has a mass of almost exactly one kilogram, because the kilogram was originally defined in 1795 as

neg: Coherence (units of measurement) measure to multiples of 2, 3 or 5, for example there were 6 "she" (barleycorns) in a "shu-si" (finger) and 30 shu-si in a "kush" (cubit). Non-commensurable quantities have different physical dimensions which means that adding or subtracting them is not meaningful. For instance, adding the mass of an object to its volume has no physical meaning. However, new quantities (and, as such, units) can be derived via multiplication and exponentiation of other units. As an example, the SI unit for force is the newton, which is defined as kg⋅m⋅s. Since a coherent derived unit is one which is defined

neg: Radian Radian The radian (SI symbol rad) is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics. The length of an arc of a unit circle is numerically equal to the measurement in radians of the angle that it subtends; one radian is just under 57.3 degrees (expansion at ). The unit was formerly an SI supplementary unit, but this category was abolished in 1995 and the radian is now considered an SI derived unit. Separately, the SI unit of solid angle measurement is the steradian. The radian is most

neg: Planck constant the unit cell of a crystal, measured by X-ray crystallography, and the molar volume of the substance. Crystals of silicon are used, as they are available in high quality and purity by the technology developed for the semiconductor industry. The unit cell volume is calculated from the spacing between two crystal planes referred to as "d". The molar volume "V"(Si) requires a knowledge of the density of the crystal and the atomic weight of the silicon used. The Planck constant is given by The experimental measurement of the Planck constant in the Large Hadron Collider laboratory was carried out in

neg: SI derived unit SI derived unit SI derived units are units of measurement derived from the seven base units specified by the International System of Units (SI). They are either dimensionless or can be expressed as a product of one or more of the base units, possibly scaled by an appropriate power of exponentiation. The SI has special names for 22 of these derived units (for example, hertz, the SI unit of measurement of frequency), but the rest merely reflect their derivation: for example, the square metre (m), the SI derived unit of area; and the kilogram per cubic metre (kg/m or kg

neg: Cubic inch Cubic inch The cubic inch (symbol in) is a unit of measurement for volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its three dimensions (length, width, and depth) being one inch long. The cubic inch and the cubic foot are still used as units of volume in the United States, although the common SI units of volume, the liter, milliliter, and cubic meter, are also used, especially in manufacturing and high technology. One cubic inch is approximately 16.387 mL. One cubic foot is equal to exactly 1,728

neg: SI derived unit Until 1995, the SI classified the radian and the steradian as "supplementary units", but this designation was abandoned and the units were grouped as derived units. SI derived unit SI derived units are units of measurement derived from the seven base units specified by the International System of Units (SI). They are either dimensionless or can be expressed as a product of one or more of the base units, possibly scaled by an appropriate power of exponentiation. The SI has special names for 22 of these derived units (for example, hertz, the SI unit of measurement of frequency), but the

neg: Acoustic ohm Acoustic ohm The acoustic ohm is a unit of measurement of acoustic impedance, which is the ratio of acoustic pressure to acoustic volume flow. In SI units, pressure is measured in pascals and flow in m/s, so the acoustic ohm has units Pa•s/m. In the cgs system, there is a cgs ohm with units dyne•s/cm. The acoustic ohm can be applied to fluid flow outside the domain of acoustics. For such applications a hydraulic ohm with an identical definition may be used. That is, the unit of the ratio of hydraulic pressure to hydraulic volume flow. Acoustic impedance is to

neg: Gram base units in 1960. The gram is today the most widely used unit of measurement for non-liquid ingredients in cooking and grocery shopping worldwide. Most standards and legal requirements for nutrition labels on food products require relative contents to be stated per 100 g of the product, such that the resulting figure can also be read as a percentage by weight. Gram The gram (alternative spelling: gramme; SI unit symbol: g) (Latin "", from Greek , "grámma") is a metric system unit of mass. Originally defined as "the absolute weight of a volume of pure water equal to the cube

neg: Roentgen (unit) absorbed dose in a wide range of matter. When measuring absorbed dose in a human due to external exposure, the SI unit the gray, or the related non-SI rad are used. From these can be developed the dose equivalents to consider biological effects from differing radiation types and target materials. These are equivalent dose, and effective dose for which the SI unit sievert or the non-SI rem are used. The following table shows radiation quantities in SI and non-SI units: Roentgen (unit) The roentgen or röntgen () (symbol R) is a legacy unit of measurement for the exposure of X-rays

neg: Enthalpy Enthalpy Enthalpy , a property of a thermodynamic system, is equal to the system's internal energy plus the product of its pressure and volume. For processes at constant pressure, the heat absorbed or released equals the change in enthalpy. The unit of measurement for enthalpy in the International System of Units (SI) is the joule. Other historical conventional units still in use include the British thermal unit (BTU) and the calorie. Enthalpy comprises a system's internal energy, which is the energy required to create the system, plus the amount of work required to make room for it by displacing its

neg: Concentration SI unit is kg/m (equal to g/L). The molar concentration formula_5 is defined as the amount of a constituent formula_6 (in moles) divided by the volume of the mixture formula_3: The SI unit is mol/m. However, more commonly the unit mol/L (= mol/dm) is used. The number concentration formula_9 is defined as the number of entities of a constituent formula_10 in a mixture divided by the volume of the mixture formula_3: The SI unit is 1/m. The volume concentration formula_13 (not to be confused with volume fraction) is defined as the volume of a constituent formula_14 divided by the volume

neg: Hoppus Hoppus The hoppus cubic foot (or ‘hoppus cube’ or ‘h cu ft’) was the standard volume measurement used for timber in the British Empire and countries in the British sphere of influence before the introduction of metric units. It is still used in the hardwood trade of some countries. This volume measurement was developed to estimate what volume of a round log would be usable timber after processing, in effect attempting to ‘square’ the log and allow for waste. The hoppus ton (HT) was also a traditionally used unit of volume in British forestry. One hoppus ton is equal to

neg: Acoustic ohm be considered an instance of hydraulic impedance. Acoustic ohm The acoustic ohm is a unit of measurement of acoustic impedance, which is the ratio of acoustic pressure to acoustic volume flow. In SI units, pressure is measured in pascals and flow in m/s, so the acoustic ohm has units Pa•s/m. In the cgs system, there is a cgs ohm with units dyne•s/cm. The acoustic ohm can be applied to fluid flow outside the domain of acoustics. For such applications a hydraulic ohm with an identical definition may be used. That is, the unit of the ratio of hydraulic pressure to

neg: Parts-per notation results. For example, electrochemists often use volume/volume, while chemical engineers may use mass/mass as well as volume/volume. Many academic papers of otherwise excellent level fail to specify their usage of the parts-per notation. SI-compliant units that can be used as alternatives are shown in the chart below. Expressions that the BIPM explicitly does not recognize as being suitable for denoting dimensionless quantities with the SI are shown in red text. Note that the notations in the “SI units” column above are all dimensionless quantities; that is, the units of measurement factor out in expressions like “1 nm/m” (1 nm/m =

neg: Magnetochemistry heavier transition metals, lanthanides and actinides, spin-orbit coupling cannot be ignored. Exchange interaction can occur in clusters and infinite lattices, resulting in ferromagnetism, antiferromagnetism or ferrimagnetism depending on the relative orientations of the individual spins. The primary measurement in magnetochemistry is magnetic susceptibility. This measures the strength of interaction on placing the substance in a magnetic field. The volume magnetic susceptibility, represented by the symbol formula_1 is defined by the relationship where, formula_3 is the magnetization of the material (the magnetic dipole moment per unit volume), measured in amperes per meter ( SI units), and formula_4 is the magnetic field

neg: Gas constant "V" is the volume of gas (SI unit cubic metres), "n" is the amount of gas (SI unit moles), "m" is the mass (SI unit kilograms) contained in "V", and "T" is the thermodynamic temperature (SI unit kelvins). "R" is the molar-weight-specific gas constant, discussed below. The gas constant is expressed in the same physical units as molar entropy and molar heat capacity. From the general equation "PV" = "nRT" we get: where "P" is pressure, "V" is volume, "n" is number of moles of a given substance, and "T" is temperature. As pressure is defined as force per unit

neg: International System of Units into effect on 20 May 2019. Derived units may be defined in terms of base units or other derived units. They are adopted to facilitate measurement of diverse quantities. The SI is intended to be an evolving system; units and prefixes are created and unit definitions are modified through international agreement as the technology of measurement progresses and the precision of measurements improves. The most recent derived unit, the katal, was defined in 1999. The reliability of the SI depends not only on the precise measurement of standards for the base units in terms of various physical constants of nature,

neg: Ship measurements to 746 watts in the SI system of units. Summer Water Line - The waterline when ship has standard load. Sometimes called Design Waterline. Ton - The unit of measure often used in specifying the size of a ship. There are three completely unrelated definitions for the word. One of them refers to weight, while the others refer to volume. Tonnage - A measurement of the cargo-carrying capacity of merchant vessels. It depends not on weight, but on the volume available for carrying cargo. The basic units of measure are the "Register Ton", equivalent to 100 cubic feet, and the

neg: Hand (unit) horse can be measured with shoes on or off. In the United Kingdom, official measurement of horses is overseen by the Joint Measurement Board (JMB). For JMB purposes, the shoes must be removed and the hooves correctly prepared for shoeing prior to measurement. Hand (unit) The hand is a non-SI unit of measurement of length standardized to . It is used to measure the height of horses in some English-speaking countries, including Australia, Canada, the Republic of Ireland, the United Kingdom and the United States. It was originally based on the breadth of a human hand. The adoption of the

neg: Degree (angle) Degree (angle) A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle, defined so that a full rotation is 360 degrees. It is not an SI unit, as the SI unit of angular measure is the radian, but it is mentioned in the SI brochure as an accepted unit. Because a full rotation equals 2 radians, one degree is equivalent to radians. The original motivation for choosing the degree as a unit of rotations and angles is unknown. One theory states that it is

neg: Unit of measurement the International System of Units, or SI. There are seven SI base units. All other SI units can be derived from these base units. For most quantities a unit is necessary to communicate values of that physical quantity. For example, conveying to someone a particular length without using some sort of unit is impossible, because a length cannot be described without a reference used to make sense of the value given. But not all quantities require a unit of their own. Using physical laws, units of quantities can be expressed as combinations of units of other quantities. Thus only a

neg: Minute arc). Although not an SI unit for either time or angle, the minute is accepted for use with SI units for both. The SI symbols for "minute" or "minutes" are min for time measurement, and the prime symbol after a number, e.g. 5′, for angle measurement. The prime is also sometimes used informally to denote minutes of time. One of the earliest known uses of the minute (and the second) is found in John of Sacrobosco's "Computus" (ca. 1235), where he used them when discussing the length of the tropical year. No earlier records for the origin of the minute

neg: Hectare names of traditional land measures are usually used, redefined as one decare: The hectare (), although not a unit of SI, is the only named unit of area that is accepted for use within the SI. In practice the hectare is fully derived from the SI, being equivalent to a square hectometre. It is widely used throughout the world for the measurement of large areas of land, and it is the legal unit of measure in domains concerned with land ownership, planning, and management, including law (land deeds), agriculture, forestry, and town planning throughout the European Union. The United Kingdom,

neg: SI base unit SI base unit The International System of Units (SI) defines seven units of measure as a basic set from which all other SI units can be derived. The SI base units and their physical quantities are the meter for measurement of length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin for temperature, the candela for luminous intensity, and the mole for amount of substance. The SI base units form a set of mutually independent dimensions as required by dimensional analysis commonly employed in science and technology. The names and symbols of SI base

neg: Hand (unit) Hand (unit) The hand is a non-SI unit of measurement of length standardized to . It is used to measure the height of horses in some English-speaking countries, including Australia, Canada, the Republic of Ireland, the United Kingdom and the United States. It was originally based on the breadth of a human hand. The adoption of the international inch in 1959 allowed for a standardized imperial form and a metric conversion. It may be abbreviated to "h" or "hh". Although measurements between whole hands are usually expressed in what appears to be decimal format, the subdivision of the hand is

neg: Kilogram the IPK is crucial because the kilogram underpins much of the SI system of measurement as it is currently defined and structured. For instance, the newton is defined as the force necessary to accelerate one kilogram at one metre per second squared. If the mass of the IPK were to change slightly then the newton would also change proportionally. In turn, the pascal, the SI unit of pressure, is defined in terms of the newton. This chain of dependency follows to many other SI units of measure. For instance, the joule, the SI unit of energy, is defined as that

neg: Litre do not create confusion because the context is usually sufficient—one being a volume, the others linear or angular measurement. The abbreviation cc (for cubic centimetre, equal to a millilitre or mL) is a unit of the cgs system, that preceded the MKS system, that later evolved into the SI system. The abbreviation cc is still commonly used in many fields including medical dosage and sizing for small combustion engine displacement, such as those used in motorcycles. The microlitre (μL) has been known in the past as the lambda (λ), but this usage is now discouraged. In the medical field the

neg: Digit (unit) Digit (unit) The digit or finger is an ancient and obsolete non-SI unit of measurement of length. It was originally based on the breadth of a human finger. It was a fundamental unit of length in the Ancient Egyptian, Mesopotamian, Hebrew, Ancient Greek and Roman systems of measurement. In astronomy a digit is one twelfth of the diameter of the sun or the moon. The digit, also called a finger or fingerbreadth, is a unit of measurement originally based on the breadth of a human finger. In Ancient Egypt it was the basic unit of subdivision of the cubit. On

neg: Astronomical unit expanding outward from the Sun. This has led to calls to abandon the astronomical unit as a unit of measurement. As the speed of light has an exact defined value in SI units and the Gaussian gravitational constant "k" is fixed in the astronomical system of units, measuring the light time per unit distance is exactly equivalent to measuring the product "G" in SI units. Hence, it is possible to construct ephemerides entirely in SI units, which is increasingly becoming the norm. A 2004 analysis of radiometric measurements in the inner Solar System suggested that the secular increase in the

neg: SI base unit referenced to the values of the fundamental constants, namely the Planck constant ("h"), the electron charge ("e"), the Boltzmann constant ("k"), and the Avogadro constant ("N"). This approach was approved in 2018, only after measurements of these constants were achieved with sufficient accuracy. SI base unit The International System of Units (SI) defines seven units of measure as a basic set from which all other SI units can be derived. The SI base units and their physical quantities are the meter for measurement of length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin

neg: Hectare (), the "are" was not included as a recognised unit. The hectare, however, remains as a non-SI unit accepted for use with the SI units, mentioned in Section 4.1 of the SI Brochure as a unit whose use is "expected to continue indefinitely". The name was coined in French, from the Latin "ārea". The metric system of measurement was first given a legal basis in 1795 by the French Revolutionary government. The law of 18 Germinal, Year III (7 April 1795) defined five units of measure: In 1960, when the metric system was updated as the International System of Units

neg: Mole (unit) Mole (unit) The mole is the unit of measurement for amount of substance in the International System of Units (SI). Effective 20 May 2019, the mole is defined as the amount of a chemical substance that contains exactly (Avogadro's constant) constitutive particles, e.g., atoms, molecules, ions or electrons. This definition was adopted in November of 2018, revising its old definition based on the number of atoms in 12 grams of carbon-12 (C) (the isotope of carbon with standard atomic weight 12 by definition). The mole is an SI base unit, with the unit symbol mol. The mole is widely used

neg: Decibel the reference value by which the ratio is calculated. For example, dBm indicates power measurement relative to 1 milliwatt. In cases where the unit value of the reference is stated, the decibel value is known as "absolute". If the unit value of the reference is not explicitly stated, as in the dB gain of an amplifier, then the decibel value is considered relative. The SI does not permit attaching qualifiers to units, whether as suffix or prefix, other than standard SI prefixes. Therefore, even though the decibel is accepted for use alongside SI units, the practice of attaching a suffix

neg: Conventional electrical unit Conventional electrical unit A conventional electrical unit (or conventional unit where there is no risk of ambiguity) is a unit of measurement in the field of electricity which is based on the so-called "conventional values" of the Josephson constant and the von Klitzing constant agreed by the International Committee for Weights and Measures (CIPM) in 1988. These units are very similar in scale to their corresponding SI units, but are not identical because of their different definition. They are distinguished from the corresponding SI units by setting the symbol in italic typeface and adding a subscript "90" – e.g., the

neg: Lambda (unit) mL (a unit 1000 times larger). In pharmaceutical use, no abbreviation for a microlitre is considered safe. The recommended practice is to write "microlitre" in full. Lambda (unit) Lambda (written λ, in lowercase) is a non-SI unit of volume equal to 10m, 1 cubic millimeter (mm) or 1 microlitre (µL). Introduced by the BIPM in 1880, the lambda has been used in chemistry and in law for measuring volume, but its use is not recommended. This use of λ parallels the pre-SI use of µ on its own for a micrometre and γ for a microgram. Although the use of

neg: Malay units of measurement Malay units of measurement Units of measurement used in Malaysia and neighbouring countries include the "kati", a unit of mass, and the "gantang", a unit of volume. In measuring amount by mass, the common unit is "kati", which is about 1 lb (604.79 g). A higher unit is "pikul" or "picul", which is 100 "kati" or . In measuring amount by volume, the common unit is "gantang" (gallon), which is equivalent to or 8 pints. To make it clear, Gantang equals a Gallon. A Gallon has sub measurements of 4 Quarts, or 8 Pints, or 16 Cups. A Gantang has

neg: Micrometre Micrometre The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known by the previous name micron, is an SI derived unit of length equaling (SI standard prefix "micro-" = 10); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch). The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria, and for grading wool by the diameter of the fibres. The width of a single

neg: Micrometre must recognize the micro sign as well. Most fonts use the same glyph for the two characters. Micrometre The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known by the previous name micron, is an SI derived unit of length equaling (SI standard prefix "micro-" = 10); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch). The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells

neg: Length measurement In some systems of units, unlike the current SI system, lengths are fundamental units (for example, "wavelengths" in the older SI units and "bohrs" in atomic units) and are not defined by times of transit. Even in such units, however, the "comparison" of two lengths can be made by comparing the two transit times of light along the lengths. Such time-of-flight methodology may or may not be more accurate than the determination of a length as a multiple of the fundamental length unit. Length measurement Length measurement is implemented in practice in many ways. The most commonly used approaches are

neg: Magnetic complex reluctance to the natural number formula_7 raised to a power equal to: Where: The "lossy" magnetic complex reluctance represents a magnetic circuit element's resistance to not only magnetic flux but also to "changes" in magnetic flux. When applied to harmonic regimes, this formality is similar to Ohm's Law in ideal AC circuits. In magnetic circuits, magnetic complex reluctance is equal to: Where: Magnetic complex reluctance Magnetic complex reluctance (SI Unit: H) is a measurement of a passive magnetic circuit (or element within that circuit) dependent on sinusoidal magnetomotive force (SI Unit: At·Wb) and sinusoidal magnetic flux (SI Unit: T·m), and this

neg: Heat capacity for gases it may be confused with specific heat capacity "at constant volume". While SI units are the most widely used, some countries and industries also use other systems of measurement. One older unit of heat is the kilogram-calorie (Cal), originally defined as the energy required to raise the temperature of one kilogram of water by one degree Celsius, typically from 14.5 to 15.5 °C. The specific average heat capacity of water on this scale would therefore be exactly 1 Cal/(C°⋅kg). However, due to the temperature-dependence of the specific heat, a large number of different definitions of the calorie came

neg: Current density is the charge density (SI unit: coulombs per cubic metre), in which "n"(r, "t") is the number of particles per unit volume ("number density") (SI unit: m), "q" is the charge of the individual particles with density "n" (SI unit: coulombs). A common approximation to the current density assumes the current simply is proportional to the electric field, as expressed by: where E is the electric field and "σ" is the electrical conductivity. Conductivity "σ" is the reciprocal (inverse) of electrical resistivity and has the SI units of siemens per metre (S⋅m), and E has the SI units of newtons

neg: Magnetic complex reluctance Magnetic complex reluctance Magnetic complex reluctance (SI Unit: H) is a measurement of a passive magnetic circuit (or element within that circuit) dependent on sinusoidal magnetomotive force (SI Unit: At·Wb) and sinusoidal magnetic flux (SI Unit: T·m), and this is determined by deriving the ratio of their complex "effective" amplitudes.[Ref. 1-3] As seen above, magnetic complex reluctance is a phasor represented as "uppercase Z mu" where: The "lossless" magnetic reluctance, "lowercase z mu", is equal to the absolute value (modulus) of the magnetic complex reluctance. The argument distinguishing the "lossy" magnetic complex reluctance from the "lossless" magnetic reluctance is equal

neg: Kilometre Kilometre The kilometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: km; or ) or kilometer (American spelling) is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for ). It is now the measurement unit used officially for expressing distances between geographical places on land in most of the world; notable exceptions are the United States and the road network of the United Kingdom where the statute mile is the official unit used. "k" (pronounced ) is occasionally used in some English-speaking countries as

neg: Lambda (unit) Lambda (unit) Lambda (written λ, in lowercase) is a non-SI unit of volume equal to 10m, 1 cubic millimeter (mm) or 1 microlitre (µL). Introduced by the BIPM in 1880, the lambda has been used in chemistry and in law for measuring volume, but its use is not recommended. This use of λ parallels the pre-SI use of µ on its own for a micrometre and γ for a microgram. Although the use of λ is deprecated, some clinical laboratories continue to use it. The standard abbreviation µL for a microlitre has the disadvantage that it can be misread as

neg: Nanometre Nanometre The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre ( m). The name combines the SI prefix "nano-" (from the Ancient Greek , ', "dwarf") with the parent unit name "metre" (from Greek , ', "unit of measurement"). It can be written in scientific notation as , in engineering notation as , and is simply metres. One nanometre equals ten ångströms. When used as a prefix for something other

neg: Molar attenuation coefficient Molar attenuation coefficient The molar attenuation coefficient is a measurement of how strongly a chemical species attenuates light at a given wavelength. It is an intrinsic property of the species. The SI unit of molar attenuation coefficient is the square metre per mole (), but in practice, it is usually taken as the M⋅cm or the L⋅mol⋅cm. In older literature, the cm/mol is sometimes used with corresponding values 1,000 times larger. In practice these units are the same, with the difference being expression of volume in either cm or in L. The molar attenuation coefficient is also known as the

neg: Volume the other and in such cases the combined volume is not additive. In "differential geometry", volume is expressed by means of the volume form, and is an important global Riemannian invariant. In "thermodynamics", volume is a fundamental parameter, and is a conjugate variable to pressure. Any unit of length gives a corresponding unit of volume: the volume of a cube whose sides have the given length. For example, a cubic centimetre (cm) is the volume of a cube whose sides are one centimetre (1 cm) in length. In the International System of Units (SI), the standard unit of volume is

neg: Radian (μrad) and nanoradians (nrad) are used in astronomy, and can also be used to measure the beam quality of lasers with ultra-low divergence. More common is arc second, which is rad (around 4.8481 microradians). Similarly, the prefixes smaller than milli- are potentially useful in measuring extremely small angles. Radian The radian (SI symbol rad) is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics. The length of an arc of a unit circle is numerically equal to the measurement in radians of the angle that it subtends; one radian

neg: Molar attenuation coefficient to determine the concentration of a protein in solution. Molar attenuation coefficient The molar attenuation coefficient is a measurement of how strongly a chemical species attenuates light at a given wavelength. It is an intrinsic property of the species. The SI unit of molar attenuation coefficient is the square metre per mole (), but in practice, it is usually taken as the M⋅cm or the L⋅mol⋅cm. In older literature, the cm/mol is sometimes used with corresponding values 1,000 times larger. In practice these units are the same, with the difference being expression of volume in either cm or in L.

neg: Blower door SI pressure measurement unit Pascal (pa). Imperial measurement units are commonly water column inches (WC Inch or IWC). The conversion rate is 1 WC inch = 249 Pa. Examples below use the commonly accepted pressure of 50pa which is 20% of 1 IWC. This is the first metric that results from a Blower Door Test. The airflow, (Imperial in Cubic Feet / minute; SI in liters / second) at a given building-to-outside pressure differential, 50 pascal (Q). This standardized single-point test allows for comparison between homes measured at the same reference pressure. This is a raw number reflecting only the

neg: Measurement the 1960s, the International System of Units (SI) is the internationally recognised metric system. Metric units of mass, length, and electricity are widely used around the world for both everyday and scientific purposes. The metric system features a single base unit for many physical quantities. Other quantities are derived from the standard SI units. Multiples and fractions are expressed as powers of 10 of each unit. When smaller or larger units are more convenient for given use, metric prefixes can be added to the base unit to denote its multiple by a power of ten: a thousandth (10) of a

neg: Luminous intensity Luminous intensity In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye. The SI unit of luminous intensity is the candela (cd), an SI base unit. Photometry deals with the measurement of visible light as perceived by human eyes. The human eye can only see light in the visible spectrum and has different sensitivities to light of different wavelengths within the spectrum. When adapted for bright conditions (photopic vision), the eye

neg: Avogadro constant value for "d"(Si) is , a relative standard uncertainty of , corresponding to a unit cell volume of . The isotope proportional composition of the sample used must be measured and taken into account. Silicon occurs in three stable isotopes (Si, Si, Si), and the natural variation in their proportions is greater than other uncertainties in the measurements. The atomic weight "A" for the sample crystal can be calculated, as the standard atomic weights of the three nuclides are known with great accuracy. This, together with the measured density "ρ" of the sample, allows the molar volume "V" to be

neg: Voltameter Voltameter A voltameter or coulometer is a scientific instrument used for measuring quantity of electricity (electric charge) through electrolytic action. The SI unit of quantity of electricity is the coulomb. The voltameter should not be confused with a voltmeter, which measures electric potential. The SI unit for electric potential is the volt. The voltameter is an electrolytic cell and the measurement is made by weighing the element deposited or released at the cathode in a specified time. This is the most accurate type. It consists of two silver plates in a solution of silver nitrate. When current is flowing, silver

neg: English plurals op. ("opus"), opp. ("opera" as plural of opus). However, often the abbreviation used for the singular is used also as the abbreviation for the plural; this is normal for most units of measurement and currency. The SI unit symbols are officially not considered abbreviations and not pluralized, as in 10 m ("10 metres"). In "The Language Instinct", linguist Steven Pinker discusses what he calls "headless words", typically bahuvrihi compounds, such as "lowlife" and "flatfoot", in which "life" and "foot" are not heads semantically; that is, a lowlife is not a type of life, and a flatfoot is not a type

neg: Radiant energy density Radiant energy density In radiometry, radiant energy density is the radiant energy per unit volume. The SI unit of radiant energy density is the joule per cubic metre (J/m). Radiant energy density, denoted "w" ("e" for "energetic", to avoid confusion with photometric quantities), is defined as where Because radiation always "transmits" the energy, it is useful to wonder what the speed of the transmission is. If all the radiation at given location propagates in the same direction, then the radiant flux through a unit area perpendicular to the propagation direction is given by the irradiance: where "c" is the radiation

neg: Sievert Nuclear Regulatory Commission permits the use of the units curie, rad, and rem alongside SI units, the European Union European units of measurement directives required that their use for "public health ... purposes" be phased out by 31 December 1985. An older unit for the dose equivalent is the rem, still often used in the United States. One sievert is equal to 100 rem: Sievert The sievert (symbol: Sv) is a derived unit of ionizing radiation dose in the International System of Units (SI) and is a measure of the health effect of low levels of ionizing radiation on the

neg: Pressure measurement scalar. In the cgs system the unit of pressure was the barye (ba), equal to 1 dyn·cm. In the mts system, the unit of pressure was the pieze, equal to 1 sthene per square metre. Many other hybrid units are used such as mmHg/cm or grams-force/cm (sometimes as kg/cm without properly identifying the force units). Using the names kilogram, gram, kilogram-force, or gram-force (or their symbols) as a unit of force is prohibited in SI; the unit of force in SI is the newton (N). Static pressure is uniform in all directions, so pressure measurements are independent of direction in

neg: Magnetic field this bound current; but to see how, it helps to introduce the concept of "magnetization" first. The "magnetization" vector field represents how strongly a region of material is magnetized. It is defined as the net magnetic dipole moment per unit volume of that region. The magnetization of a uniform magnet is therefore a material constant, equal to the magnetic moment of the magnet divided by its volume. Since the SI unit of magnetic moment is A⋅m, the SI unit of magnetization is ampere per meter, identical to that of the -field. The magnetization field of a region points in the

neg: Barrel (unit) crude oil traded at Hardisty, Alberta, Canada is 6.29287 U.S. barrels per cubic metre., despite the fact that crude oil cannot be measured to that degree of accuracy. Regulatory authorities in producing countries set standards for measurement accuracy of produced hydrocarbons, where such measurements affect taxes or royalties to the government. In the United Kingdom, for instance, the measurement accuracy required is ±0.25%. A barrel can technically be used to specify any volume. Since the actual nature of the fluids being measured varies along the stream, sometimes qualifiers are used to clarify what is being specified. In the oil field,

neg: Kilometre other disciplines, even though world records are catalogued, the one kilometre event remains a minority event. The world records for various sporting disciplines are: Kilometre The kilometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: km; or ) or kilometer (American spelling) is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for ). It is now the measurement unit used officially for expressing distances between geographical places on land in most of the world; notable exceptions are the United States and the road network

neg: Unit of measurement with ensuring worldwide uniformity of measurements and their traceability to the International System of Units (SI). Metrology is the science of developing nationally and internationally accepted units of measurement. In physics and metrology, units are standards for measurement of physical quantities that need clear definitions to be useful. Reproducibility of experimental results is central to the scientific method. A standard system of units facilitates this. Scientific systems of units are a refinement of the concept of weights and measures historically developed for commercial purposes. Science, medicine, and engineering often use larger and smaller units of measurement than those used in

neg:
Barrer SI units: formula_5 Barrer Barrer is a non-SI unit of gas permeability (specifically, gas permeability) used in the membrane technology and contact lens industry. It is named after Richard Barrer. formula_1 Here the 'cm' is standard cubic centimeter, which is a unit of amount of gas rather than a unit of volume. It represents the amount of gas molecules or moles that "would" occupy one cubic centimeter at standard temperature and pressure, as calculated via the ideal gas law.
 In SI unit Barrer can be expressed as:
 formula_2
 The cm corresponds in the permeability equations to the

neg: Julian year (astronomy) year. The Julian year is not a unit of measurement in the International System of Units (SI), but it is recognized by the International Astronomical Union (IAU) as a non-SI unit for use in astronomy. Before 1984, both the Julian year and the mean tropical year were used by astronomers. In 1898, Simon Newcomb used both in his "Tables of the Sun" in the form of the Julian century (36,525 days) and the "solar century" ( days), a rounded form of 100 mean tropical years of each according to Newcomb. However, the mean tropical year is not suitable as a

neg: Pressure measurement because atmospheric pressure is always changing and the reference in this case is fixed at 1 bar. To produce an absolute pressure sensor, the manufacturer seals a high vacuum behind the sensing diaphragm. If the process-pressure connection of an absolute-pressure transmitter is open to the air, it will read the actual barometric pressure. The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N·m or kg·m·s). This special name for the unit was added in 1971; before that, pressure in SI was expressed in units such as N·m. When indicated, the zero reference is

neg: Kilogram of the "MKSA system". In 1948 the CGPM commissioned the CIPM "to make recommendations for a single practical system of units of measurement, suitable for adoption by all countries adhering to the Metre Convention". This led to the launch of SI in 1960 and the subsequent publication of the "SI Brochure", which stated that "It is not permissible to use abbreviations for unit symbols or unit names ...". The CGS and MKS systems co-existed during much of the early-to-mid 20th century, but as a result of the decision to adopt the "Giorgi system" as the international system of units in

neg: International System of Units International System of Units The International System of Units (SI, abbreviated from the French ") is the modern form of the metric system, and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units, which are the ampere, kelvin, second, metre, kilogram, candela, mole, and a set of twenty prefixes to the unit names and unit symbols that may be used when specifying multiples and fractions of the units. The system also specifies names for 22 derived units, such as lumen and watt, for other common physical quantities.

neg: Day Day A day, a unit of time, is approximately the period of time during which the Earth completes one rotation with respect to the Sun ("solar day"). In 1960, the second was redefined in terms of the orbital motion of the Earth in year 1900, and was designated the SI base unit of time. The unit of measurement "day", was redefined as 86 400 SI seconds and symbolized "d". In 1967, the second and so the day were redefined by atomic electron transition. A civil day is usually 86 400 seconds, plus or minus a possible leap second in Coordinated

neg: Coherence (units of measurement) Units (1960) was designed around the principle of coherence. In SI, which is a coherent system, the unit of power is the watt, which is defined as one joule per second. In the US customary system of measurement, which is non-coherent, the unit of power is the horsepower, which is defined as 550 foot-pounds per second (the pound in this context being the pound-force); similarly the gallon is not equal to a cubic yard (nor is it the cube of any length unit of the system). The earliest units of measure devised by humanity bore no relationship to each other.

neg: Unit of measurement known as the Gimli Glider) ran out of fuel in mid-flight because of two mistakes in figuring the fuel supply of Air Canada's first aircraft to use metric measurements. This accident was the result of both confusion due to the simultaneous use of metric and Imperial measures and confusion of mass and volume measures. Unit of measurement A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. Any other quantity of that kind can be expressed as

neg: Charge density separation processes. For example, charge density influences metal-metal bonding and hydrogen bonding. For separation processes such as nanofiltration, the charge density of ions influences their rejection by the membrane. Charge density In electromagnetism, charge density is a measure of the amount of electric charge per unit length, surface area, or volume. "Volume charge density" (symbolized by the Greek letter ρ) is the quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C•m), at any point in a volume. "Surface charge density" (σ) is the quantity of charge per unit area, measured in coulombs

neg: Day daytime may extend beyond one 24 hour period and could even extend to months Day A day, a unit of time, is approximately the period of time during which the Earth completes one rotation with respect to the Sun ("solar day"). In 1960, the second was redefined in terms of the orbital motion of the Earth in year 1900, and was designated the SI base unit of time. The unit of measurement "day", was redefined as 86 400 SI seconds and symbolized "d". In 1967, the second and so the day were redefined by atomic electron transition. A civil day

neg: Volume (finance) the length of the period. Therefore, the unit of measurement for average volume is shares per unit of time, typically per trading day. Trading volume is usually higher when the price of a security is changing. News about a company's financial status, products, or plans, whether positive or negative, will usually result in a temporary increase in the trade volume of its stock. Shifts in trade volume can make observed price movements more significant. Higher volume for a stock is an indicator of higher liquidity in the market. For institutional investors who wish to sell a large number of shares

neg: Pressure Pressure is distributed to solid boundaries or across arbitrary sections of fluid "normal to" these boundaries or sections at every point. It is a fundamental parameter in thermodynamics, and it is conjugate to volume. The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m, or kg·m·s). This name for the unit was added in 1971; before that, pressure in SI was expressed simply in newtons per square metre. Other units of pressure, such as pounds per square inch and bar, are also in common use. The CGS unit of pressure is the barye

neg: Imperial units The most commonly used units are the mile or "li" (), the yard or "ma" (), the foot or "chek" (), and the inch or "tsun" (). The traditional measure of flat area is the square foot () of the imperial system, which is still in common use for real estate purposes. The measurement of agricultural plots and fields, however, is traditionally conducted in (mau) of the Chinese system. For the measurement of volume, Hong Kong officially uses the metric system, though the gallon (, ka-lun) is also occasionally used. During the 1970s, the metric system and SI units were

neg: Charge density Charge density In electromagnetism, charge density is a measure of the amount of electric charge per unit length, surface area, or volume. "Volume charge density" (symbolized by the Greek letter ρ) is the quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C•m), at any point in a volume. "Surface charge density" (σ) is the quantity of charge per unit area, measured in coulombs per square meter (C•m), at any point on a surface charge distribution on a two dimensional surface. "Linear charge density" (λ) is the quantity of charge per unit length,

neg: Kilogram-force per square centimetre Kilogram-force per square centimetre A kilogram-force per centimetre square (kgf/cm), often just kilogram per square centimetre (kg/cm), or kilopond per centimetre square is a deprecated unit of pressure using metric units. It is not a part of the International System of Units (SI), the modern metric system. 1 kgf/cm equals 98.0665 kPa (kilopascals). kg/cm remains active as a measurement of force primarily due to older torque measurement devices still in use. This use of the unit of pressure provides an intuitive understanding for how a body's "mass" can apply "force" to a scale's "surface area" i.e.kilogram-force per square (centi-)metre. In

neg: Cubic yard Cubic yard A cubic yard (symbol yd) is an Imperial / U.S. customary (non-SI non-metric) unit of volume, used in the United States, Canada, and the UK. It is defined as the volume of a cube with sides of 1 yard (3 feet, 36 inches, 0.9144 meters) in length. The IEEE symbol for the cubic yard is yd. The following abbreviations are used: One cubic yard per second (1 yd/s) is a unit of volume flow rate. It corresponds to one cubic yard passing through a specified area every second. One cubic yard per minute (1 yd/min) is a unit

neg: Malay units of measurement sub measurements of 4 Churpak, or 8 Leng, or 16 Chentong. Churpak equals a Quart. Leng equals a Pint. Chentong equals a Cup.<ref> "Chentong" is also normally used only in certain areas, and so eight "leng" makes up a "gantang". When used to measure unhusked rice, a "gantang" weights about . Malay units of measurement Units of measurement used in Malaysia and neighbouring countries include the "kati", a unit of mass, and the "gantang", a unit of volume. In measuring amount by mass, the common unit is "kati", which is about 1 lb (604.79 g). A higher unit is "pikul"

neg: Digit (unit) in Britain for centuries. Heath, writing in 1760, explains that 12 digits are equal to the diameter in eclipse of the sun, but that 23 may be needed for the Earth's shadow as it eclipses the moon, those over 12 representing the extent to which the Earth's shadow is larger than the Moon. The unit is apparently not in current use, but is found in recent dictionaries. A 'finger' of an alcoholic beverage is colloquially referred to as a 'digit'. Digit (unit) The digit or finger is an ancient and obsolete non-SI unit of measurement of length. It was originally

neg: Avogadro constant of molecules in one gram-molecule of oxygen (exactly of oxygen, according to the definitions of the period), and this term is still widely used, especially in introductory works. The change in name to "Avogadro constant" ("N") came with the introduction of the mole as a base unit in the International System of Units (SI) in 1971, which regarded amount of substance as an independent dimension of measurement. With this recognition, the Avogadro constant was no longer a pure number, but had a unit of measurement, the reciprocal mole (mol). While it is rare to use units of amount of substance

neg: Unit of measurement former British Empire. US customary units are still the main system of measurement used in the United States despite Congress having legally authorised metric measure on 28 July 1866. Some steps towards US metrication have been made, particularly the redefinition of basic US and imperial units to derive exactly from SI units. Since the international yard and pound agreement of 1959 the US and imperial inch is now defined as exactly , and the US and imperial avoirdupois pound is now defined as exactly . While the above systems of units are based on arbitrary unit values, formalised as standards,

neg: History of the metric system the Treaty of the Metre was extended to cover electrical units with the CGPM merging its work with that of the IEC. The twentieth century history of measurement is marked by five periods: the 1901 definition of the coherent MKS system; the intervening 50 years of coexistence of the MKS, cgs and common systems of measures; the 1948 "Practical system of units" prototype of the SI; the introduction of the SI in 1960; and the evolution of the SI in the latter half century. The need for an orthogonal electromagnetic unit to resolve the difficulties of defining such units in

neg: Julian year (astronomy) unit of measurement because it varies from year to year by a small amount, days according to Newcomb. In contrast, the Julian year is defined in terms of SI units so is as accurate as those units and is constant. It approximates both the sidereal year and the tropical year to about ±0.008 days. The Julian year is the basis of the definition of the light-year as a unit of measurement of distance. In astronomy, an "epoch" specifies a precise moment in time. The positions of celestial objects and events, as measured from Earth, change over time, so when measuring

neg:
Barrer Barrer Barrer is a non-SI unit of gas permeability (specifically, gas permeability) used in the membrane technology and contact lens industry. It is named after Richard Barrer. formula_1 Here the 'cm' is standard cubic centimeter, which is a unit of amount of gas rather than a unit of volume. It represents the amount of gas molecules or moles that "would" occupy one cubic centimeter at standard temperature and pressure, as calculated via the ideal gas law.
 In SI unit Barrer can be expressed as:
 formula_2
 The cm corresponds in the permeability equations to the thickness of the

neg: Mole (unit) informal holiday in honor of the unit among chemists. The date is derived from the Avogadro number, which is approximately . It starts at 6:02 a.m. and ends at 6:02 p.m. Alternatively, some chemists celebrate June 2 or February 6, a reference to the 6.02 part of the constant. Mole (unit) The mole is the unit of measurement for amount of substance in the International System of Units (SI). Effective 20 May 2019, the mole is defined as the amount of a chemical substance that contains exactly (Avogadro's constant) constitutive particles, e.g., atoms, molecules, ions or electrons. This definition was

neg: Cubic yard of volume flow rate. It corresponds to one cubic yard passing through a specified area every minute. Cubic yard A cubic yard (symbol yd) is an Imperial / U.S. customary (non-SI non-metric) unit of volume, used in the United States, Canada, and the UK. It is defined as the volume of a cube with sides of 1 yard (3 feet, 36 inches, 0.9144 meters) in length. The IEEE symbol for the cubic yard is yd. The following abbreviations are used: One cubic yard per second (1 yd/s) is a unit of volume flow rate. It corresponds to one cubic yard

neg: Measurement to a physical constant or other invariable phenomena in nature, in contrast to standard artifacts which are subject to deterioration or destruction. Instead, the measurement unit can only ever change through increased accuracy in determining the value of the constant it is tied to. The first proposal to tie an SI base unit to an experimental standard independent of fiat was by Charles Sanders Peirce (1839–1914), who proposed to define the metre in terms of the wavelength of a spectral line. This directly influenced the Michelson–Morley experiment; Michelson and Morley cite Peirce, and improve on his method. With the exception

neg: Cup (unit) respectively, the difference being the volume lost to evaporation during brewing. Australia, Canada, New Zealand, and some other members of the Commonwealth of Nations—being former British colonies that have since metricated—employ a "metric cup" of 250millilitres. Although derived from the metric system, it is not an SI unit. A "coffee cup" is 1.5 dL or 150 millilitres or 5.07 US customary fluid ounces, and is occasionally used in recipes. It is also used in the US to specify coffeemaker sizes (what can be referred to as a "Tasse à café"). A "12-cup" US coffeemaker makes 57.6 US customary fluid ounces

neg: Heat capacity properties are often prefixed with the term "specific". International standards now recommend that specific heat capacity always refer to division by mass. The units for the specific heat capacity are formula_7. In chemistry, heat capacity is often specified relative to one mole, the unit of amount of substance, and is called the molar heat capacity. It has the unit formula_8. For some considerations it is useful to specify the volume-specific heat capacity, commonly called volumetric heat capacity, which is the heat capacity per unit volume and has SI units formula_9. This is used almost exclusively for liquids and solids, since

neg: Cubic metre Cubic metre The cubic metre (in British English and international spelling as used by the International Bureau of Weights and Measures) or cubic meter (in American English) is the SI derived unit of volume. Its SI symbol is m. It is the volume of a cube with edges one metre in length. An alternative name, which allowed a different usage with metric prefixes, was the stère, still sometimes used for dry measure (for instance, in reference to wood). Another alternative name, no longer widely used, was the kilolitre. A cubic metre of pure water at the temperature of maximum density