Anonymous ID: a2768b March 17, 2025, 11:39 p.m. No.22779682   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun

>>22779672

>travelled by light in vacuum during a time interval of โ 1/299792458โ  of a second,

This was only defined in 1983, Before that, it was originally conceived in the 1790s as one ten-millionth of the distance from the Earthโ€™s equator to the North Pole along a meridian