Monday, February 17, 2014

How Modern Light Bulbs Work

A summary of how our modern light bulbs (beyond the incandescent light bulb) work, all in one place.


1 comment:

Anonymous said...

I think an easy way to get rich would be to design a cheap battery-powered light that can act like the main room light. I can't believe the way we still pfaff around with torches and candles during a power cut.