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The Breitspurbahn (German pronunciation: [ˈbʁaɪtʃpuːɐ̯baːn], translation: broad-gauge railway) was a railway system planned and partly surveyed by the Nazi government of Germany. Its track gauge – the distance between the two running rails – was to be 3000 mm (9 ft 10 + 1 ⁄ 8 in), more than twice that of the 1435 mm (4 ft 8 + 1 ...
The metric system became compulsory on 1 January 1872, in Germany and on 1 January 1876, in Austria. [ 1 ] Some obsolete German units have names similar to units that were traditionally used in other countries, and that are still used in a limited number of cases in the United Kingdom ( imperial units ) and fully in the United States ( United ...
This is a list of obsolete units of measurement, organized by type. These units of measurement are typically no longer used, though some may be in limited use in various regions. For units of measurement that are unusual but not necessarily obsolete, see List of unusual units of measurement .
The 20th century history of measurement is marked by five periods: the 1901 definition of the coherent MKS system; the intervening 50 years of coexistence of the MKS, cgs and common systems of measures; the 1948 Practical system of units prototype of the SI; the introduction of the SI in 1960; and the evolution of the SI in the latter half century.
The metric units of measurement on Canadian canned food labels are merely the equivalent of the still widely used imperial units such as the ounce. Metrication in Australia, New Zealand and South Africa was essentially complete within a decade, while in Canada metrication has been halted since the 1970s.
Traditional Burmese units of measurement are used in Burma, with partial transition to the metric system. U.S. units are used in limited contexts in Canada due to the large volume of trade with the U.S. There is also considerable use of imperial weights and measures, despite de jure Canadian conversion to metric.
After the initial success of German invasion of the Soviet Union in 1941, Nazi Germany attempted to implement the Generalplan Ost and Hunger Plan, as part of its war of extermination in Eastern Europe. The Soviet resurgence and entry of the US into the war meant Germany lost the initiative in 1943 and by late 1944 had been pushed back to the ...
The conversion between different SI units for one and the same physical quantity is always through a power of ten. This is why the SI (and metric systems more generally) are called decimal systems of measurement units. [10] The grouping formed by a prefix symbol attached to a unit symbol (e.g. ' km ', ' cm ') constitutes a new inseparable unit ...