Electricians have known for forever that electricity flows in between the wires.

Actually electricity flows around the wire.:D

Sincerely, an electricians apprentice.

The reason the lightbulb glow bright is due to the friction that electrons induce in the bulb as it flows through it at the speed of light.

There is a caveat however, we don't know exactly how it works, but we have a pretty good idea. So many times I come to find electricity giving me a run for my money as my head boggles around ideas on how this and that happened during a mishap at work. Electricity is familiar but it's also very strange.

Cheers.