Helenna boosted

Another interesting fact of the day: If I handed you a device with just a single knob and told you that by twisting the knob you would change the speed of light in a vacuum to a new value for all of time and space from the beginning of time, and then you set off to prove if the device did what I claimed. There would be no way to actually verify or disprove it.

The reason for this is by changing the speed of light you’d effect the apparent size of the universe and everything in it. If you slow down the speed of light to half its normal speed then you also shrink the space between everything to half, so the light takes the same time to move between two objects. Basically any change to the speed of light would cause an equivalent change to your “ruler” and thus would appear to be unchanged.

Just find out I never post on this instance lol

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