One thing to note about Einstein's relativity and the speed of light:
Einstein's equations are completely generic to what the constant c actually is. The physics/mathematics works for any value that you put in. It just so happens that our observations give c a specific value.
David Mermin's book has an interesting chapter where he looks at relativistic effects using the speed of light at a few m/s.
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One thing to note about Einstein's relativity and the speed of light: Einstein's equations are completely generic to what the constant c actually is. The physics/mathematics works for any value that you put in. It just so happens that our observations give c a specific value. David Mermin's book has an interesting chapter where he looks at relativistic effects using the speed of light at a few m/s.