3
votes
Why is aurora borealis circular in shape when viewed from space?
Geomagnetic flux lines originating inside the auroral ovals are dragged by the solar wind to form the outer lobes of the magnetotail and ultimately connect to the interplanetary magnetic field (the ...
- 31
1
vote
How can radio radiation ionize gases?
This question stems from a misunderstanding that I also held personally for a VERY long time, and only just recently comprehended: A "radio frequency source" is not the same as a photon in ...
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