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what is the speed of light through in air?

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Nami’s Answer

Hi!

The speed of light in vacuum is 3x10^8 m/s.
This changes based on various mediums like air, water etc. In air, it changes on the basis of particulate matter, humidity and density
A good resource is - https://www.rpi.edu/dept/phys/Dept2/APPhys1/optics/optics/node4.html

All the best!
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Vernon’s Answer

In a vacuum, the speed of light is about 300,000 kilometers per second. Depending on the relative humidity, temperature and particle density of the air, it will be somewhat slower.

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Wael’s Answer

It is very slightly less than the speed of light in vacuum. The link below is all about it and it is a very nice read.


http://www.rpi.edu/dept/phys/Dept2/APPhys1/optics/optics/node4.html
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