4 ms·
That's true, but light only travels at ~0.67c in a fibre optic cable. That's why I mentioned that fibre optic cables and copper wires are not vacuums.
by pugz 13y ago
That's true, but light only travels at ~0.67c in a fibre optic cable. That's why I mentioned that fibre optic cables and copper wires are not vacuums.
- retrogradeorbit 13y agoAccording to wikipedia, electric field propagation through unshielded copper is 0.95c to 0.97c. Electric field propagation through standard coaxial cable is 0.66c.
- pugz 13y agoHence why zmmmmm was incorrect about the speeds: electricity in the copper wires is travelling faster than light in the fibre optic cables. zmmmmm didn't mention drift velocity, but that wasn't really related to his point.