Incandescent Light Bulb 22 Inventors of incandescent light bulbs before Edison Heated metal filament...
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Transcript of Incandescent Light Bulb 22 Inventors of incandescent light bulbs before Edison Heated metal filament...
Incandescent Light Bulb 22 Inventors of incandescent light
bulbs before Edison Heated metal filament glows when
heated and is protected from air by glass and a strong vacuum
Credited for invention for three reasons◦ Long lasting carbonized bamboo filament
(1200+ hours)
◦ Cost effective for mass production
◦ High resistance which made it economically viable
Thomas Edison’s Influence on Today’s World
Phonograph Influence First device that could record and
reproduce sounds Made CD’s, MP3’s, & radio
possible Helped create the music industry
Light Bulb Influence Though invented by others, Edison made it a
commercial success LED TV lights are possible because of the light bulb Las Vegas, a city with billions of lights was made
possible because of cheap, highly resistant lights
Kinetoscope Influence Largely developed by Edison’s
employee William Dickson Though not true video gave the
illusion of motion Gave birth to American Cinema Created the pathway for what is
now a multi-billion dollar industry
Dickson Greeting (1891)