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5

It is region of negative space-time curvature. Positive space-time curvature, like that caused by a black hole, a star, or even a planet, causes light to bend inward towards the source of gravity. The opposite, where light is deflected away from the "source" (regardless of what it might be) is effectively negative space-time curvature. I'm not sure what ...


4

You want a system that everyone across the galaxy can observe together and has a regular periodicity. The solution is Pulsars Pulsars are highly regular rotating neutron stars that emit beams of electromagnetic radiation from their poles. While not all pulsars are good enough for the most precise time keeping, the regularity of millisecond pulsars is even ...


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So, I Am Not A Laser Scientist But... $\mathrm{M^2}$ scales linearly with power due to thermal effects within a single laser. As you crank that laser up, even with a fixed and high efficiency, some proportion of the power it is developing will turn to heat, and the heat will affect that laser in some way. More power, more heat, more bad. Pretty clear cut. ...


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Maybe a Reflection Nebula I don't think that there is a common name for the property of having a reflection gradient, in space. This scenario probably isn't prevalent enough to require a term for it. However there might be a common name for some other cosmic phenomena, that has reflection gradient potential. For example if you are creating this reflection ...


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