Username / email:   Password:
or or
Exit Theater Mode

Login or register to enable this feature.

Or, compose an email to send yourself.

Share this video
  • Share via email

Embed or link to this episode

View by:

The Science Behind LED aka light-emitting diode

Tuesday, April 1st, 2008 – running time 05:19
In this edition of Rad Science, Dr. Kiki explains the science inside the LED, or "light-emitting diode". (popSiren)

She discusses semiconductors, electron orbitals, narrow-spectrum light, photons and the wavelength differences between red, blue and white light. The good Dr. Kiki also shows off a vintage flashlight she found at a flea-market that she modded to her liking. For more on Kiki's science experiments and how things work, check out her blog at kirstensanford.com. Watch the entire episode >