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 >
