LED vs Halogen Lighting - Which one is the Best Choice?
How different types of electric light - incandescent, halogen, fluorescent, and LED works | Britannica
Guiding Questions for Objective 2: How are all light bulbs, (incandescent, fluorescent, halogen, and LED's), alike in producing light? How are all of these. - ppt download
OSRAM EFP 64627 HLX 100W 12V MR16 Tungsten Halogen Lamp: Video Projector Lamps: Amazon.com: Tools & Home Improvement