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Name: Byran D Spray
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Question:
I would like to know a bit about Black Holes. Is it true that most of the electromagnetic spectrum cannot escape the gravitational pull but radio waves can?



Replies:
I had not heard that, but I can imagine there might be some truth to it: if a radio wave had a wavelength long enough, it really would not 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. Although actually, I think the way it would work is that the radio wave would still be strongly affected by the black hole's gravity.

A Smith


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