MATH’S NOTES
In my column this past July, we saw how different colors might be achieved with common LEDs. This month I would like to “sort-of” continue our discussion of LEDs with some additional information that might be of use to the experimenters in our midst.
After experimenting with the red, blue, and green LEDs I was duly impressed with just how far we have come in filament-less solid-state lighting. These devices easily put out enough light to make a solid-state flashlight (at a fraction of the typical incandescent current) and have a typical lifetime of 100,000 hours (or at least that is what many
