ELI5
For example, if you have two bulbs in the circuit. One on the Moon.
Battery--->---300k km-----Bulb 1
1m
Bulb 2----<----300k km-------I
Are you saying bulb 2 lights (almost) instantly, but bulb 1 takes 2 secs?
If 1 came on instantly, you'd be able to signal to your mate on the Moon at faster-than-light.
(, Mon 22 Nov 2021, 1:13, Reply)