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how did they calculate the speed of light reddit. So how did scientists figure this outSources. Do they just measure the speed of light in a vacuum at every direction then calculate how fast we are going and in what direction so that we can then figure out the speed of light.
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The National Bureau of Standards in Boulder Colorado used helium-neon lasers and meticulously accurate cesium clocks to measure the speed of light. We know exactly what the speed of light is. 299792458 meters per second 186282 miles per seconda speed.
I can first aim at where the Earth is at and use that to calculate the time of travel for.
For a further discussion of the ways in which the speed of light has been measured see. The full video can be seen here. The formula for average speed also called average velocity in physics and engineering is. Richard Feynman discusses how Newton was able to explain gravity the tides and how we first calculated the speed of light.
