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Post by Deleted on Aug 2, 2010 18:31:28 GMT
Okay, I'm already a few months late, but do you know what important invention is already 50 years old? Not only useful but that people think is cool, too? |
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Post by bixaorellana on Aug 2, 2010 20:12:16 GMT
Huh! I certainly would have guessed less than 50 years. The OP prompted me to go look up television. Did you know that "In 1936, Kálmán Tihanyi described the principle of plasma television, the first flat panel system"? en.wikipedia.org/wiki/TelevisionThe truth is, I don't really know what applications laser has, outside of surgery. |
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Post by Deleted on Aug 2, 2010 20:45:59 GMT
You've never had a bar code scanned in a store?
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Post by bixaorellana on Aug 3, 2010 15:46:12 GMT
 I truly did not know that was laser technology!
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Post by Deleted on Aug 4, 2010 9:20:41 GMT
And then there are CD players...
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Post by hwinpp on Aug 4, 2010 10:31:04 GMT
Yes, barcodes are read by laser.
In Germany there are people who refuse to shop in places that use barcodes. They claim lasering their food can make them get cancer...
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Post by bixaorellana on Aug 4, 2010 14:16:15 GMT
If they'd only remember to wear their tinfoil hats to the supermarket, they'd be protected!
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Post by Deleted on Aug 4, 2010 14:47:44 GMT
Tinfoil soaks into the scalp and dissolves brain cells.
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Post by bixaorellana on Aug 5, 2010 13:58:46 GMT
Is that proven new research, or simply a theory that you're repeating.  |
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Post by fumobici on Aug 5, 2010 15:19:00 GMT
Some physicists view laser light as a uniquely macro quantum phenomenon as all the photons in a laser beam share a quantum state. I find that contention convincing even though mainstream science still doesn't accept quantum phenomena at greater than Planck scales.
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Post by bixaorellana on Aug 8, 2010 15:10:18 GMT
That's light years over my head!  I'm assuming this thread is not only about lasers, but about scientific achievements that have celebrated 50th anniversaries. A little late on these, but ...... NASA turned 50 in late 2008. Here is the anniversary website, but be sure to click on Home as well: www.nasa.gov/50th/home/index.htmlDo you know what this picture is? It's the very first digital image, made in the Spring of 1957. ... computer pioneer Russell Kirsch ... and his colleagues at NBS [Nat'l Bureau of Standards] ... created a rotating drum scanner and programming that allowed images to be fed into it. The first image scanned was a head-and-shoulders shot of Kirsch’s three-month-old son Walden.www.sciencecodex.com/fiftieth_anniversary_of_first_digital_image
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Post by Deleted on Aug 8, 2010 15:29:27 GMT
I've always been super impressed by whoever invented newsprint dot matrix photos -- what a fabulous way to transmit photographs in olden times. If you don't recognize this photo, just back away from the screen.  |
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