Earth mass. An Earth mass (denoted as M?, M??? or ME, where ? and ??? are the astronomical symbols for Earth), is a unit of mass equal to the mass of the planet Earth. The current best estimate for the mass of Earth is M? = 5.9722??1024??kg, with a relative uncertainty of 10???4. It is equivalent to an average density of 5515??kg/m3. Using the nearest metric prefix, the Earth mass is approximately six ronnagrams, or 6.0??Rg.
wikidata.org 7 views · 3w ago
Q1131660. The stone or stone weight is an English and British imperial unit of mass equal to 14 avoirdupois pounds (???6.35??kg). The stone continues in customary use in the United Kingdom and Ireland for body weight.
wikidata.org 8 views · 3w ago
kelvin. The kelvin is the base unit for temperature in the International System of Units (SI). The Kelvin scale is an absolute temperature scale that starts at the lowest possible temperature, taken to be 0??K. By definition, the units of the Celsius scale and the Kelvin scale have the same magnitude, and any temperature in degrees Celsius can be converted to the kelvin scale by adding 273.15.
wikidata.org 8 views · 3w ago
degree Celsius. The degree Celsius is the unit of temperature on the Celsius temperature scale, one of two temperature scales used in the International System of Units (SI), the other being the closely related Kelvin scale. The degree Celsius can refer to a specific point on the Celsius temperature scale or to a difference or range between two temperatures. It is named after the Swedish astronomer Anders Celsius (1701???1744), who proposed the first version of it in 1742. The unit was called centigrade in several languages for many years. In 1948, the International Committee for Weights and Measures renamed it to honor Celsius and also to remove confusion with the term for one hundredth of a gradian in some languages. Most countries use this scale, with the exception of the United States, some island territories, and Liberia, where the Fahrenheit scale is still used.
wikidata.org 7 views · 3w ago
degree Fahrenheit. The Fahrenheit scale is a temperature scale based on one proposed in 1724 by the physicist Daniel Gabriel Fahrenheit (1686???1736). It uses the degree Fahrenheit as the unit. Several accounts of how he originally defined his scale exist, but the original paper suggests the lower defining point, 0????F, was established as the freezing temperature of a solution of brine made from a mixture of water, ice, and ammonium chloride. The other limit established was his best estimate of the average human body temperature, originally set at 90????F, then 96????F.
wikidata.org 8 views · 3w ago
Planck length. In particle physics and physical cosmology, Planck units are a system of units of measurement defined exclusively in terms of four universal physical constants: c, G, ??, and kB. Expressing one of these physical constants in terms of Planck units yields a numerical value of 1. They are a system of natural units, defined using fundamental properties of nature rather than properties of a chosen prototype object. Originally proposed in 1899 by German physicist Max Planck, they are relevant in research on unified theories such as quantum gravity.
wikidata.org 8 views · 3w ago
acre. The acre is a unit of land area used in the British imperial and the United States customary systems. It is traditionally defined as the area of one chain by one furlong, which is exactly equal to 10 square chains, 1???640 of a square mile, 4,840 square yards, or 43,560 square feet, and approximately 4,047??m2, or about 40% of a hectare. The acre is sometimes abbreviated ac, but is usually spelled out as the word "acre".
wikidata.org 9 views · 3w ago
homestead. A survey township, sometimes called a Congressional township or just township, as used by the United States Public Land Survey System and by Canada's Dominion Land Survey is a nominally-square area of land that is nominally six survey miles on a side. Each 36-square-mile township is divided into 36 sections of one square mile each. The sections can be further subdivided for sale.
wikidata.org 8 views · 3w ago
pint. The pint is a unit of volume or capacity in both the imperial and United States customary measurement systems. In both of those systems, it is one-eighth of a gallon.
wikidata.org 6 views · 3w ago
barrel. A barrel is one of several units of volume applied in various contexts: there are dry barrels; fluid barrels, such as the British beer barrel and American beer barrel; oil barrels, etc. For historical reasons, the volumes of some barrel units are roughly double the volumes of others; volumes in common use range approximately from 100 to 200 litres. In many connections, the term drum is used almost interchangeably with barrel.
wikidata.org 7 views · 3w ago
bushel. A bushel is an imperial and US customary unit of volume, based upon an earlier measure of dry capacity. The old bushel was used mostly for agricultural products, such as wheat: in modern usage, the volume is nominal, with bushels denoting a mass defined differently for each commodity.
wikidata.org 7 views · 3w ago
Volume
gross register tonnage. Gross register tonnage, or gross registered tonnage, is a ship's total internal volume expressed in "register tons", each of which is equal to 100 cubic feet (2.83??m3). Replaced by Gross Tonnage (GT), gross register tonnage uses the total permanently enclosed capacity of the vessel as its basis for volume. Typically this is used for dockage fees, canal transit fees, and similar purposes where it is appropriate to charge based on the size of the entire vessel. Internationally, GRT may be abbreviated as BRT for the German "Bruttoregistertonne".
wikidata.org 5 views · 3w ago
cord. The cord is a unit of measure of dry volume used to measure firewood and pulpwood in the United States and Canada.
wikidata.org 6 views · 3w ago
Volume
minim. The minim is a unit of volume in both the imperial and U.S. customary systems of measurement. Specifically, in the imperial system, it is 1???60 of an imperial fluid drachm or 1???480 of an imperial fluid ounce; in the U.S. customary system, it is 1???60 of a US customary fluid dram or 1???480 of a US customary fluid ounce.
wikidata.org 6 views · 3w ago
light-year. A light-year, alternatively spelled light year, is a unit of length used to express astronomical distances and is equal to exactly 9460730472580.8??km, which is approximately 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year. Despite its inclusion of the word "year", the term is not a unit of time.
wikidata.org 6 views · 3w ago
astronomical unit. The astronomical unit is a unit of length defined as 149597870700??m. Historically, the astronomical unit was conceived as the average Earth-Sun distance, before its modern redefinition in 2012.
wikidata.org 8 views · 3w ago
light-second. The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in one second, and is equal to exactly 299792458??m.
wikidata.org 7 views · 3w ago
Earth radius. Earth radius is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid, the radius ranges from a maximum of about 6,378??km (3,963??mi) to a minimum of nearly 6,357??km (3,950??mi).
wikidata.org 4 views · 3w ago
thousandth of an inch. A thousandth of an inch is a derived unit of length in a system of units using inches. Equal to 1???1000 of an inch, a thousandth is commonly called a thou or, particularly in North America, a mil.
wikidata.org 7 views · 3w ago
pica. The pica is a typographic unit of measure corresponding to approximately 1???6 of an inch. One pica is further divided into 12 points.
wikidata.org 6 views · 3w ago
Length
DTP point
wikidata.org 6 views · 3w ago
square inch. A square inch is a unit of area, equal to the area of a square with sides of one inch. The square inch is a common unit of measurement in the United States and the United Kingdom. Pounds per square inch (psi), a unit of pressure, are derived from this unit of area.
wikidata.org 9 views · 3w ago
cubic inch. The cubic inch, sometimes abbreviated cu in, is a unit of volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its three dimensions being one inch long which is equivalent to ???1/231??? of a US gallon.
wikidata.org 5 views · 3w ago
Length
foot. The foot is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, ???, is commonly used to represent the foot. In both customary and imperial units, one foot comprises 12??inches, and one yard comprises three feet. Since an international agreement in 1959, the foot is defined as equal to exactly 0.3048??meters. The most common plural of foot is feet. However, the singular form may be used like a plural when it is preceded by a number, as in "that man is six foot tall". Footage is the term used informally for a length expressed in feet.
wikidata.org 5 views · 3w ago
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