Thomas Edison used this carbon-filament bulb in the first public demonstration of his most famous
Grade Range: 6-8
Resource Type(s): Interactives & Media, Worksheets
Duration: 16 minutes
Date Posted: 9/23/2010
In this episode of the History Explorer podcast, curator Hal Wallace talks about the development of the laser, an invention that has as many practical uses as portrayals in science fiction and fantasy. In addition to audio, this resource includes related images and a teachers guide.