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- Celsius (3635 bytes)
4: ! Conversion from
18: ...spheric pressure]]. Several other people; Elvius from Sweden (1710), a Christian of Lyons (1743), and...
20: ...he [[SI]] ''centi-'' prefix. While the values for freezing and boiling of water remain approximately c...
22: Anders Celsius originally proposed that the freezing point should be 100 degrees and that the bo...
24: ...-to-day purposes. In broadcast media it was still frequently referred to as centigrade until the late ... - Kelvin (3722 bytes)
4: ! Conversion from
18: ...en molecular motion stops), and one kelvin is the fraction 1/273.16 of the [[thermodynamic temperature...
24: ...duced in [[1954]] (10th [[Conf鲥nce G鮩rale des Poids et Mesures|General Conference on Weights and Meas...
46: *:<math>\frac{\mathrm{K}}{11,\!605}</math> - Iridium (10102 bytes)
171: ...t element known. However, calculations of density from the [[space lattice]] may produce more reliable...
184: ...am]] mass, kept by the [[Bureau International des Poids et Mesures|International Bureau of Weights and Me...
189: ...ium. It is recovered commercially as a by-product from [[nickel]] mining and processing.
203: ...pniok.de/ir.htm Picture in the element collection from Pniok.de] - Krypton (9031 bytes)
177: ...n trace amounts in the atmosphere, is isolated by fractionating liquefied air, and is often used with ...
183: ...rd definition of the length of the [[metre]] was, from [[1960]] to [[1983]], based on the light emitte...
188: ...n turn replaced by the [[Bureau International des Poids et Mesures]] (International Bureau of Weights and...
191: ...n|ppm]]. It can be extracted from liquid air by [[fractional distillation]].
198: ...of Kr-85 during the reprocessing of [[fuel rod]]s from nuclear reactors. A strong gradient exists betw... - Platinum (10600 bytes)
169: The name platinum mainly derives from the [[Spanish language|Spanish]] ''platina'' me...
175: ... member of the [[Royal Society]] he was prevented from publishing a reference to the unknown metal unt...
182: ...rnational des Poids et Mesures]] in [[Sevres]], [[France]]. A platinum-iridium cylinder serves to this...
192: ...producer of platinum group metals from its South African mines. It mines, processes, refines and marke...
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