September 28th, 1889
The first General Conference on Weights and Measures (CGPM) defines the length of a meter as the distance between two lines on a standard bar of an alloy of platinum with ten percent iridium, measured at the melting point of ice. event on September 28, 1889. Read about how to open files in Open File Database.
Events around September 28, 1889
September 29th, 1889 | Death | Louis Faidherbe, French general (born in 1818) |
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