Hi, if you're interested in Einstein could you please measure the speed of light, c? In the future maybe a Ministry of Truth could measure it. 🤔 I bought a portable oscilloscope & photodetectors, but I keep procrastinating. I was thinking of measuring the signal btwn 2 sensors - my laser beam hits one, then bounces back off a mirror & hits the other one. I know audio isn't fast enough to detect a difference (the laser hit both instantly in my audio recordings). I did a course in General Relativity when I was young. I like the math but I think that theory's wrong. Perhaps there's a speed much faster than light. Or maybe Riemannian geometry is useful in some other way, in physics.