Tek Tip 2sD - Light Bulbs

A long time ago, Thomas Edison patented the first light bulb with open market success.  That was 1879.  It's an evacuated glass tube with a glowing filament that puts out immediate light and a lot of heat.

Here are three bulbs from last 2sD's Tek Tip

This is the incandescent - lots of heat and not so much light but still our standard since it was around for so long - "100 W equivalent"

CFLs are the flowery spiraly bulbs.  They are Compact Fluorescent Light bulbs and you just take a skinny long tube and wrap it in a spiral for compactitude.  The one below is a 100 W equivalent.  I have lots of these in my house but they take time to get up to full brightness and are annoying for that reason.

LED bulbs are Light Emitting Diode bulbs.  60 W equivalent bulbs are down to under $4 a bulb so I bought a few.  Instant on to full brightness is nice but the 100 W equivalent are still $10.  Those are the ones I want.

LEDs on your car and in the bulb above and on my bicycle flashers turn on and off many times a second to reduce energy usage and reduce heat produced.  Sometimes.  Some are on constantly.