(YouTube link)
The tungsten filament of a common incandescent light bulb is way more interesting than you thought. Bill Hammock, "The Engineer Guy," explains how it is made and how it works -or sometimes doesn't. -Thanks, Bill!
Also: If you enjoy the Engineer Guy, you'll love the video in which he posts and responds to criticism from reddit members. Link
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This video is not only interesting but pretty well produced.
Digital technology has certainly worked hard at leveling the production and distribution playing field of moving pictures.