This spectrum analyzer can analyze light, including infrared (IR) and ultraviolet (UV) light. It uses DVD Disk that works like a diffraction grating and splits light into the rainbow, the software then analyzes the rainbow. (A rainbow actually is the light spectrum)
In this video, I also explain why incandescent light bulbs are not energy efficient.
ABOUT SOFTWARE:
I want to thank people from theremino for making the great software, here is their website: http://www.theremino.com
And here is how to build spectrum analyzer, instruction from theremino: http://www.theremino.com/wp-content/u...
And here is the link to the actual software for the analyzer: http://www.theremino.com/wp-content/u...
More info here: http://www.theremino.com/en/downloads...