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He used linseed oil as the thermometric fluid. [6] 1701 — Ole Christensen Rømer made one of the first practical thermometers. As a temperature indicator it used red wine. (Rømer scale), The temperature scale used for his thermometer had 0 representing the temperature of a salt and ice mixture (at about 259 s).
July 2019: IBM buys Red Hat for $34 billion in one of the largest software acquisitions in history. Leading up to the sale, Red Hat employs 13,360 people worldwide and reports yearly revenue of $3 ...
Such thermometers are usually calibrated so that one can read the temperature simply by observing the level of the fluid in the thermometer. Another type of thermometer that is not really used much in practice, but is important from a theoretical standpoint, is the gas thermometer. Other important devices for measuring temperature include:
Red Hat Czech s.r.o. is a research and development arm of Red Hat, based in Brno, Czech Republic. [97] The subsidiary was formed in 2006 and has 1,180 employees (2019). [98] Red Hat chose to enter the Czech Republic in 2006 over other locations due to the country's embrace of open-source. [99]
There were many manufacturers of engine thermometers: they used different, and sometimes complicated, designs to get a reliable and accurate gauge. American Motor Safety Corp., Kalamazoo, Michigan; "Unbreakable Hydrometer [7] Great Northern Sales Co., "Bemometer" [8] G. H. Morden Co., London, "The Morden Indicator" [9]
A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in which some change occurs with a change in temperature; and (2) some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury ...
Motor oil, engine oil, or engine lubricant is any one of various substances used for the lubrication of internal combustion engines. They typically consist of base oils enhanced with various additives, particularly antiwear additives , detergents, dispersants , and, for multi-grade oils, viscosity index improvers .
Alexander Duckham (11 March 1877 – 1 February 1945) was an English chemist and businessman, best known for the development of machine lubricants.The son of an engineer, after university he specialised in lubrication, working briefly for Fleming's Oil Company before founding his own company, Alexander Duckham & Co, in Millwall in 1899.