Research

History and How Halogen Lamps Work-

http://www.edisontechcenter.org/halogen.html


LED vs. Halogen Bulbs- History and Comparison

http://www.livestrong.com/article/138000-led-bulbs-vs-halogen-bulbs/


Differences between LED and halogen-

http://www.electronicsweekly.com/blogs/led-lights/2009/01/why-can-led-not-yet-rival-halogen.html


How halogen lamps are made-

http://www.madehow.com/Volume-6/Halogen-Lamp.html#b

How LED lights work-

http://www.edisontechcenter.org/LED.html

LED history-

http://www.lightsandknives.com/led-technology-history.htm

History of the LED-

http://www.electronicsweekly.com/Articles/12/10/2012/49501/50-year-history-of-the-LED.htm

Facts on LEDs-

http://www.ehow.com/facts_5037728_led-lights.html