The Lahti L-39 is a Finnish 20 mm anti-tank rifle used during the Second World War. It had excellent accuracy, penetration and range, but its size made transportation difficult. It was nicknamed "Norsupyssy"... continue reading
posted by Mordhaus 6 years 11 months 2 weeks ago • 136 views • 10:14search results matching tag: kilogram
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The US signed the metre convention and bases all customary units on SI standards. As an aside, the Utah constitution from 1895 required the metric system to be taught in schools. This requirement was repealed... continue reading
posted by eric3579 6 years 11 months 3 weeks ago • 1,012 views • 8:52Yes, it's only micrograms of difference, but it's still really weird: until 2018, the kilogram is defined as "the weight of this physical object". So what happens when that object changes?
posted by Mordhaus 7 years 10 months 1 week ago • 1,538 views • 3:45YouTube Description: The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram.
posted by Zifnab 1 decade 1 year 1 month 1 week ago • 2,553 views • 11:44- 1