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how to find speed of light distance. However Leon Foucault used an improved apparatus that comprised rotating mirrors and dragged down the value to 298000 kms. Still an inch or two behind.
The speed of light is equal to 186000 miles per second or the time it takes for light to travel in a vacuum. D x 1 tan a 1 tan v d x 1 tan a 1 tan v. C dt.
With the knowledge of the distance between the mirror and the lights source and the wheels rate of rotation Fizeau calculated the speed of light to be around 315000 kms.
To find the speed distance is over time in the triangle so speed is distance divided by time. Type 21 into input box labeled Distance and set distance unit to miles Type 45 into input box labeled Speed and set speed units to miles per hour. Distance Speed. However Leon Foucault used an improved apparatus that comprised rotating mirrors and dragged down the value to 298000 kms.