[podcast]http://edwardwillett.com/wp-content/uploads//2012/07/Edisons-Battery.mp3[/podcast] Thomas Edison gave us many wonderful inventions, mainstays of 20th century life. However, since he died in 1931, you might be forgiven for asking, “What has he done for us lately?” Him personally, not so much, what with being dead and all: but one of his inventions has just taken on new life, thanks …
Tag: electricity
Fuel cells
In twenty years, will you still be driving a car with an internal combustion engine? Not if the future unfolds the way auto industry experts expect it to. The car of 2020, it seems increasingly likely, will be fueled with methanol or hydrogen and driven by an electric motor powered by fuel cells–most likely, fuel …
Resistors
Recently there’s been quite a lot of talk about new high-temperature superconductors and how they may revolutionize technology. (In fact, some of that talk was mine, since I wrote a column on superconductivity a while back.) Superconductors are materials that transmit electricity perfectly–in other words, materials in which, once electrons start to flow, they never …
Lights
Human beings like light. We don’t see well at night, and our vaunted intelligence goes hand in hand with a vivid imagination that loves to populate shadows with Things That Go Bump in the Night. As a result, we’ve always looked for ways to light up our lives: campfires, torches, candles, oil lamps, gas lamps…and, …
Electrical shocks
I distinctly recall, as a kid in junior high, being required in shop class to stand in a circle holding hands with my classmates, two of whom were attached to opposite sides of a small hand-cranked electrical generator. Somebody (probably the teacher) cranked the generator, and the rest of us were expected to “ooh” and …
Static electricity
I’m a little nervous as I word-process this column about static electricity, because every computer owner knows (and usually learned the hard way), that static electricity is a Bad Thing. Static electricity, however, has been around longer than computers: like, forever. The first time anybody noticed, though, was around 600 B.C., when the Greeks …
Superconductivity
You’ve probably heard of “The Spy Who Came in from the Cold.” Well, now there’s something else that’s coming in from the cold: superconductivity. Superconductivity is not something that orchestra directors aspire to; it refers to a discovery made 80 years ago at the University of Leiden (Holland) by Heike Kamerlingh Onnes, who was …
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