4 ms·
That's not strictly necessary, is it? All matter should be able to effect gravity. It's a matter of having sensitive enough detectors for whatever is causing th
by illvm 8y ago
That's not strictly necessary, is it? All matter should be able to effect gravity. It's a matter of having sensitive enough detectors for whatever is causing the disturbance, not necessarily having something which can produce enough of a disturbance to detect.
- jcims 8y agoI did some high school level math on the equivalence of the signals detected by LIGO vs the gravitational wave induced by the mass energy conversion of 1kg of plutonium from the other side of the earth. If memory serves the signal of the latter should have been ~3 orders of magnitude higher. Using nukes to communicate is a bit intense, but a tuned receiver should be able to pick up lower energy levels.
- pdonis 8y ago> the gravitational wave induced by the mass energy conversion of 1kg of plutonium from the other side of the earth. Did you take into account that in a process like this, virtually none of the energy released can be put into gravitational waves? The efficiency of such transmission is extremely low for processes involving ordinary matter--many orders of magnitude less efficient than for electromagnetic waves. You need huge quantities of matter to overcome this problem--or, alternatively, you need very dense matter, like neutronium, or strong spacetime curvature like that of a black hole (but not too large a hole, since curvature at the horizon goes like the inverse square of the hole's mass).