Barrel (US Oil)
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Ampere
The ampere (symbol: A) is the SI unit of electric current. The ampere, in practice often shortened to amp, is an SI base unit, and is named after André-Marie Ampère, one of the main discoverers of electromagnetism. In practical terms, the ampere is a measure of the amount of electric charge passing... -
Candela
The candela (pronounced /kænˈdɛlə/ or /kænˈdiːlə/, symbol: cd) is the SI base unit of luminous intensity; that is, power emitted by a light source in a particular direction, weighted by the luminosity function (a standardized model of the sensitivity of the human eye to different wavelengths, also... -
Calorie
The calorie is a pre-SI metric unit of energy. The unit was first defined by Professor Nicolas Clément in 1824 as a unit of heat. This definition entered French and English dictionaries between 1841 and 1867. In most fields its use is archaic, having been replaced by the SI unit of energy, the... -
Degree Celsius
Celsius (also historically known as centigrade) is a temperature scale that is named after the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale two years before his death. The degree Celsius (°C) can refer to a specific temperature on the Celsius scale as... -
Centimeter
A centimetre (American spelling: centimeter, symbol cm) is a unit of length in the metric system, equal to one hundredth of a metre, which is the current SI base unit of length. Centi is the SI prefix for a factor of 10. Hence a centimetre can be written as 10 × 10 m (engineering notation) or 1E−2... -
Day
A day (symbol d) is a unit of time equivalent to approximately 24 hours. It is not an SI unit but it is accepted for use with SI. The SI unit of time is the second. The word 'day' can also refer to the (roughly) half of the day that is not night, also known as 'daytime'. Both refer to a length of... -
Electronvolt
In physics, the electron volt (symbol eV; also written electronvolt according to the NIST, IUPAC, and BIPM) is a unit of energy. By definition, it is equal to the amount of kinetic energy gained by a single unbound electron when it accelerates through an electrostatic potential difference of one... -
Furlong
A furlong is a measure of distance in imperial units and U.S. customary units. It is equal to one-eighth of a mile, 220 yards, 660 feet, 201.168 meters, or 10 chains. Five furlongs are approximately 1 kilometer (1.00584 km to be exact). Since the original definition of the meter was one-quarter of... -
Degree Fahrenheit
Fahrenheit is the temperature scale proposed in 1724 by, and named after, the physicist Daniel Gabriel Fahrenheit (1686–1736). Today, the scale has been replaced by the Celsius scale in most countries; it is still in use for non-scientific purposes in the United States and a few other nations, such... -
Gallon (US)
A gallon is a measure of volume of approximately four litres. Historically it has had many different definitions, but there are three definitions in current use. These are the U.S. liquid gallon (≈ 3.8 L) and the lesser used U.S. dry gallon (≈ 4.4 L) which are in use in the United States, and the...
