I remember seeing these things at MD Anderson about seven years ago. The pulsating light is indeed pretty cool, although I wondered why it wasn't a steady light

I remember seeing these things at MD Anderson about seven years ago. The pulsating light is indeed pretty cool, although I wondered why it wasn't a steady light. Probably because of heat, power efficiency, and the bulbs would have to be designed very differently (bulbs for flash vs floodlights). I would like to know if I'm right, or if there's something special about flashes versus microorganisms.