If you believe the advertising campaign put out by Thomas Edison, he did. Thomas Edison brought the United States the incandescent bulb using a patent issued in Great Britain by Joseph Wilson Swan. Swan invented an electric light bulb using a partial vacuum and carbonized thread as a filament. Carbon requires a lot of current to glow and the bulbs would soot over and not last very long. Edison created a bulb using a better vacuum and thinner metal filaments that required less power and glowed much brighter.
October 31st is Joseph Swan's birthday. Find out what else occurred on this day in science history.
No comments:
Post a Comment