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Light in the Darkness

A brief examination of the invention of LED lights.
by

Chris White

on 4 September 2012

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Transcript of Light in the Darkness

Light Emitting Diodes Light in the Darkness LED Light Emitting Diode Invented by this guy Nick Holonyak Jr. in 1962 At the 10th annual
Lemelson-MIT Awards Ceremony







He was awarded $500,000!!! For his









VERY BRIGHT IDEA!!! Holonyak likes to see what he's doing! In the late 1950s, Holonyak learned about research on how semiconductors could generate infrared light. Light in the infrared spectrum is invisible to the human eye; Holonyak believed the technology could have a greater impact if people could actually see the results. “I deliberately wanted to be out of the infrared and in the visible spectrum where I could see what I was doing,” Holonyak said. “I knew I could make the materials and junctions that would emit red light.” ("Nick Holonyak Jr. invented the first practical light-emitting diode (LED)") (“Let there be light – From a chip.” ) Light-emitting diodes produce more lumens per watt (the measurement of light) than both incandescent and halogen lighting sources, making them LEDs are EVERYWHERE! LEDs save ENERGY!!! And there's some really cool videos that show what it looks like but I don't want to get in trouble with my teacher for using sources that are not in the public domain so I'll just point you to the link and you can go watch it yourself! LEDs can even change COLORS! Super secret links to very cool videos www.youtube.com/watch?v=8F5QYiG5A4o&feature=fvwrel

www.youtube.com/watch?v=3YuHUY2XfcA Chris White Web 120 LEDs are incredibly efficient and have thousands of uses. They are gentle on the eyes and produce beautiful colors. Thank you Mr. Holonyak! Works Citied Some led pumpkin lights in a store display public domain image picture. n.d. Public domain images. n.p. Web. 29 Aug. 2012. <http://www.public-domain-image.com/objects-public-domain-images-pictures/electronics-devices-public-domain-images-pictures/electric-lights-pictures/some-led-pumpkin-lights-in-a-store-display.jpg.html> Led sign clarkson 6 15. n.d. Public domain images. n.p. Web. 29 Aug. 2012. <http://www.public-domain-image.com/objects-public-domain-images-pictures/signs-public-domain-images-pictures/led-sign-clarkson-6-15.jpg.html> Green light emitting diode led on circuit board free picture. n.d. Public domain images. n.p. Web. 29 Aug. 2012. <http://www.public-domain-image.com/full-image/objects-public-domain-images-pictures/electronics-devices-public-domain-images-pictures/green-light-emitting-diode-led-on-circuit-board.jpg-free-picture.html> Kratochvil, Petr. Decorative Led Lights. n.d. Publicdomainimages.net. Bobek Ltd. Web. 29 Aug. 2012. <http://www.publicdomainpictures.net/view-image.php?image=17183&picture=decorative-led-lights> Kratochvil, Petr. LED Open Sign. n.d. Publicdomainimages.net. Bobek Ltd. Web. 29 Aug. 2012. <http://www.publicdomainpictures.net/view-image.php?image=18940&picture=led-open-sign> OCAL. Rainbow Of Light Emitting Diodes. 13 Nov. 2007 Clker.com. Rolera LLC. Web. 29 Aug. 2012. <http://www.clker.com/clipart-6520.html> Deglr6328. Nick Holonyak Jr. 17 June 2006. Wikimedia Commons. Wikimedia Foundation. Web. 29 Aug. 2012. <http://commons.wikimedia.org/wiki/File:Nick_Holonyak_Jr.jpg> Svander, Dalia. R, G, and B, LEDs. 2006. Wikimedia Commons. Wikimedia Foundation. Web. 29 Aug. 2012. <http://commons.wikimedia.org/wiki/File:RGB_LEDs.JPG> Garzón, David G. Money Wads. 16 May 2012. Open Clip Art Library. Fabricatorz + Aiki Lab. Web. 29 Aug. 2012. <http://openclipart.org/detail/170057/money-wads-by-vokimon> Bartel, Karl. Light bulb. 6 Feb. 2006. Open Clip Art Library. Fabricatorz + Aiki Lab. Web. 29 Aug. 2012. <http://openclipart.org/detail/12935> “Let there be light – From a chip.” Lemelson-MIT. MIT School of Engineering. 21 Apr. 2004. Web. 29 Aug. 2012. <http://web.mit.edu/invent/n-pressreleases/n-press-04LMP.html#top> “Nick Holonyak Jr. invented the first practical light-emitting diode (LED)” Lemelson-MIT. MIT School of Engineering. 21 Apr. 2004. Web. 29 Aug. 2012. <http://web.mit.edu/invent/n-pressreleases/n-press-04LMP.html#top> (“Let there be light – From a chip.” ) more environmentally friendly and cost effective in the long run. LEDs last an average of ten times longer than incandescent bulbs.
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