In the space of the Universe gravity waves and light waves, are they 2 different means of sending a signal?

Answer 1

You could, in theory, send a "signal" using a modulated gravity wave, but gravity waves would be much less practical for sending signals than light waves.

The biggest problem is that the force of gravity diminishes over large distances (unless we find a way to generate a coherent "beam" of gravity). A coherent beam of light, however, would have the same energy over an indefinite distance, and it's very easy to generate.

Also, to generate gravity waves for communication purposes, we would need to generate an extremely large oscillating mass. We're not nearly close to this kind of techlology yet.

Answer 2

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Um, this answer only applies if you meant gravity and light are ways that the UNIVERSE sends signals within itself. I just read other people's answers and I might have interpreted it the wrong way. Sorry if I sound like a philosopher.
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This is some deep stuff you're going into, and I want you to remember something.

Whenever I start to think about the Universe, or about time, (and I'm sure this is the same with everybody), it tends to be an overcomplicated hypothesis, one that isn't necessary to observe until more evidence is gathered.

What you are suggesting is that the Universe has a self-conscience, some sort of "mind" that controls and uses these signals. It is a bit of a romantic view, but still possible.

I don't know the answer to your question, and I don't know if you should be taking my advice, but try not to dwell into an area which can't be proved, or even tested at this point. We don't even understand how a human consciousness works, so why think about a universal one? If you spend to much time reaching for something fifty feet away, you'll never see what's right in front of you.

So at this point, no, I don't think it's a signal. I'll start to consider it after I consider that the Universe itself has a consciousness.

Answer 3

My idea is that gravity and light are two opposite ends of a single spectrum. In Superstring Theory also known as M-Theory, light and gravity can be opposite ends of a single string. As far as sending a signal is concerned any wave may be used however, light and the electromagnetic spectrum are the fastest form of signal.

Answer 4

Yes!