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questions
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Why microwaves used in satellite communications?
I've been reading recently that:-
EM waves with a shorter wavelength have shorter range in air/other medium
Microwaves are used in satellite communications over radio waves.
This doesn't make sense ...
2
votes
1
answer
378
views
Is the Earth's atmosphere a Faraday cage?
X-ray telescopes are required to be above the atmosphere as the atmosphere blocks EM waves with wavelengths < UV . Does this mean that the Earth's atmosphere can be thought of as a Faraday cage ...
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