Is Electricity Instant? A Shocking Experiment from 1746

In 1746, a French physicist ran electric current through a line of two hundred monks holding hands to measure how fast it traveled, and concluded, wrongly, that it moved instantly. This short traces how that flawed experiment set off a real debate about the speed of electricity that took decades to settle.

Why it's free: Free on NOVA PBS's own channel; GBH produces NOVA for PBS.