Question:
I would like to know a bit about Black Holes. Is it true that most of the
electromagnetic spectrum can't escape the gravitational pull but radio
waves can? If it isn't true then what is the story?
Replies:
I hadn't heard that, but I can imagine there might be
some truth to it: if a radio wave had a wavelength long enough,
it really wouldn't make sense to say whether it was "inside"
the black hole or "outside" of it. I guess the same would hold
for any other particle with very low energy. Good question.
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