It turns out that typical cool white, warm
white and kitchen lamps decay on the order of 30 milliseconds, while aquarium and full
sunlight spectrum lamps are quite fast, down to about 40 microseconds or so. A black
lamp, with no phosphor at all, decayed to 10% the peak value in about 20 microseconds.
Perhaps at some future date I will experiment with using some of these powerful light
sources to send data over a wide area, by encoding data in the modulating signal to the