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Created with Fabric.js 1.4.5 LED Bulbs LED's or Light Emitting Diotes are a form of light which can be illuminated by the movement of electrons in a semi-conductor material As you can see, LED bulbsare much more efficient inthe long run than Incandescentor Fluorescent Bulbs. LED Bulbs Other Bulbs Other Bulbs LED Bulbs 2015 2020 Expected Growth for LED Bulbs by 2020 By: Rushan Niazi Nick Holonyak (The Father of the LED) In 1962, Holonyak discovered that passing electrons through a semi conductor suchas aluminum and gallium arsenide, can produce light more efficiently than an incandescent bulb and produces less heat. LED Bulbs produce morelight using less energy compared to Incandescent bulbs. LED's are used in many objectsaround the world such as TVmonitors, Smartphones andmany others. - Airports- Car parks- Hospitals- Traffic lights- Homes Where are LED bulbs used: Advantages: 1. Long Life2. Energy Efficiency3. Ecologically Friendly4. Durable Quality5. Zero UV Emissions Disadvantages: 1. High Initial Cost2. Colours changeover time3. White LED'shave different colours Interesting Facts: New Terms: 1. LED - Light Emitting Diode2. Lumen (lm) - unit used to measurethe amount of light a source produces3. Watt - unit of electrical power - Unlike incandescent bulbs, which release 90 %of their energy as heat, LEDs use energy far moreefficiently with little wasted heat.- In 2012, about 49 million LEDs were installedin the U.S, saving about $675 million in annual energy costs. 0 50 100 150 200 2008 2009 2010 2011 2012 LED Prices per Kilolumen (RED) vs LED's Installed (Green) in USA *in millions
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