/u/platinum95's posts in /r/askscience

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Light is generally described as having a sinusoidal waveform. Is it possible to have light as other waveforms, such as a square wave, saw-tooth wave or triangle wave? If so, how differently would such light behave in relation to "classic" sinusoidal light?

1755 upvotes

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Since gravity's speed is finite, does a moving mass create a Doppler shift in its gravitation field? Will the gravity in front of a moving mass be stronger than behind it?

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What happens when 2 or more black holes collide?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Light is generally described as having a sinusoidal waveform. Is it possible to have light as other waveforms, such as a square wave, saw-tooth wave or triangle wave? If so, how differently would such light behave in relation to "classic" sinusoidal light?	1755
Since gravity's speed is finite, does a moving mass create a Doppler shift in its gravitation field? Will the gravity in front of a moving mass be stronger than behind it?	2
What happens when 2 or more black holes collide?	1