Tonne

•  Litre

  The litre (or liter - see spelling differences) is a unit of volume. There are two official symbols: the Latin letter L in lower and upper case (l and L). The lower case L is also often written as a cursive ℓ, though this symbol has no official approval by any international bureau. Although the litre is not an SI unit, it is accepted for use with the SI, and has appeared in several versions of the metric system. The official SI unit of volume is the cubic metre (m), equivalent to 1,000 litres.

  

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•  Torr

  The torr is a non-SI unit of pressure defined as ⁄760 of a standard atmosphere, chosen to be roughly equal to the fluid pressure exerted by a millimeter of mercury, i.e. a pressure of 1 Torr is approximately equal to 1 mmHg. Note that the symbol is spelled exactly the same as the unit, but the symbol is capitalized, as is customary in metric units derived from names.

  

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•  Hectare

  A hectare is a unit of area equal to 10,000 square metres (107,639 sq ft), or one square hectometre (100 metres, squared), and is commonly used for measuring land area. Its base unit, the are, was defined by older forms of the metric system, but is no longer part of the modern metric system known as the International System of Units (SI). The International Committee for Weights and Measures (CIPM) classifies the hectare as a unit that is accepted for use with SI.

  

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•  Barn (unit)

  A barn (symbol b) is a unit of area. Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is used in all fields of high energy physics to express the cross sections of any scattering process. A barn is defined as 10 m or 100 square femtometers (fm) and is approximately the cross sectional area of a uranium nucleus.

  

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•  Sverdrup

  The sverdrup, named in honour of the pioneering oceanographer Harald Sverdrup, is a unit of measure of volume transport. It is used almost exclusively in oceanography, to measure the transport of ocean currents. Its symbol is Sv. Note that the sverdrup is not an SI unit, and that its symbol conflicts with the sievert's. It is equivalent to 10 cubic metres per second (0.001 km/s, or about 264 million U.S. gallons per second).

  

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•  Dioptre

  A dioptre, or diopter, is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, 1/metres). For example, a 3-dioptre lens brings parallel rays of light to focus at ⁄3 metre. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. The term was proposed by French ophthalmologist Felix Monoyer in 1872.

  

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•  Ångström

  The ångström or angstrom is an internationally recognized unit of length equal to 0.1 nanometre or 1 × 10 metres. It is named after Anders Jonas Ångström. Although accepted for use, it is not formally defined within the International System of Units (SI). The ångström is often used in the natural sciences for expressing the sizes of atoms, lengths of chemical bonds and the wavelengths of electromagnetic radiation, and in technology for the dimensions of parts of integrated circuits.

  

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•  Curie

  The curie (symbol Ci) is a unit of radioactivity, defined as 1 Ci = 3.7×10 decays per second or becquerels. This is roughly the activity of 1 gram of the radium isotope Ra, a substance studied by the pioneers of radiology, Marie and Pierre Curie. The curie has since been replaced by an SI derived unit, the becquerel (Bq), which equates to one decay per second. Therefore: 1 Ci = 3.7×10 Bq and 1 Bq = 2.70×10 Ci The unit is named after Pierre and Marie Curie.

  

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•  Röntgen

  The röntgen or roentgen (symbol R) is a unit of measurement for ionizing radiation, and is named after the German physicist Wilhelm Röntgen. Adopted in 1928, 1 R is the amount of radiation required to liberate positive and negative charges of one electrostatic unit of charge (esu) in 1 cm³ of dry air at standard temperature and pressure (STP). This corresponds to the generation of approximately 2.08×10 ion pairs.

  

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•  Jansky

  In radio astronomy, the flux unit or jansky (symbol Jy) is a non-SI unit of spectral electromagnetic flux density equivalent to 10 watts per square metre per hertz. The flux density or monochromatic flux,, of a source is the integral of the spectral radiance,, over the source solid angle: The unit is named after pioneering US radio astronomer Karl Guthe Jansky, and is defined as: The flux density in Jy can be converted to a magnitude basis, for suitable assumptions about the spectrum.

  

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• Non-SI metric units by likeorhate
• Units of mass by likeorhate

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•  Zlaté Hory

  Zlaté Hory is a town in the Jeseník District, Olomouc Region, Czech Republic, on the border with Poland. It has a population of 4,447 (2006). The town was founded in 1224. Administrative parts: Rejvíz, Horní a Dolní Údolí and Ondřejovice According to the Austrian census of 1910 the town had 4,520 inhabitants, 4,341 of whom had permanent residence there. Census asked people for their native language, 4,341 (100%) were German-speaking.

  

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•  L'Arroseur Arrosé

  L'Arroseur Arrosé (also known as The Waterer Watered and The Sprinkler Sprinkled) is an 1895 French short black-and-white silent comedy film directed and produced by Louis Lumière and starring François Clerc and Benoît Duval. It was first screened on June 10, 1895. It has the distinction of being the earliest known instance of film comedy, as well as the first use of film to portray a fictional story.

  

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•  Leopold, Freiherr von Buch

  

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•  Lothar Udo II, Margrave of the Nordmark

  

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•  HSC Wight Ryder II

  

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