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Like another poster, I had this thought some time ago. What I wondered was if there is a gravitational equivalent to metamaterials (in electromagnetism, periodi
by mdifrgechd 6y ago
Like another poster, I had this thought some time ago. What I wondered was if there is a gravitational equivalent to metamaterials (in electromagnetism, periodic structures that have specific bulk properties not otherwise achievable), that could be used to focus gravitational waves is some useful way.
I remember reading that the overall power radiated as gravitational waves by the earth orbiting the sun is in the tens of Watts, so they are probably to weak to be practical however produced.
- pa7x1 6y agoWe don't think so, a very important property of gravity is that it interacts with everything in the exact same way. This property is behind Einstein's Equivalence Principle and in turn on our ability to interpret gravity as curvature of spacetime. Metamaterials with special properties under the gravitational interaction would break this. On the other hand, violations of the Equivalence Principle could point into ways of achieving it.