What are LED
Bulbs? And where did the incandescent bulbs go?
LEDs bulbs
contain multiple Light Emitting Diodes. These diodes emit photons…the same
light as the sun. With falling prices, they are taking over the marketplace as
the go-to bulb, and for good reason. LED bulbs turn on instantly, use less
energy, last longer, need not time to warm up, perform better in cold
temperatures, can handle jarring and bumping, and are smaller than anything
else readily available on the market.
Let’s
compare LEDs to incandescent bulbs. Incandescent light bulbs work by heating a
filament to a very high temperature so that it glows. A typical 60 watt
incandescent bulb uses 60 watts to produce 800 lumens , last about 1,000 hours
and wastes 98% of their energy as heat.
A typical
LED bulb uses 10 watts to produce 800 lumens, lasts 50,000 hours and wastes 4%
of their energy as heat.
Incandescent
bulbs have a reputation for emitting a “warm” light. I had a hard time getting my family to replace them for this reason. LED’s, however, come in
every imaginable color spectrum, sometimes in the same bulb. For my birthday, I
received a Philips Hue LED kit, which allows me to control the light, intensity
and frequency of the LED bulbs via my smartphone. The colors pulse and change
when I play music, when the phone rings, when someone enters the room via a
motion sensor, etc. This is one of the best gifts I’ve ever received.
So, what is
the fate of incandescent bulbs? A national ban on incandescent bulbs went into
affect in January of this year. You may not have noticed. It turns out that
most people have already made the switch to LEDs, or at least CFLs (which has acted
as a bridging technology). Like Seattle’s ban on plastic bags, this is just a
logical progression towards better design brought about by smart policy. By
“better” I mean more environmentally, socially and economically sustainable
design.