Materials for LED Glowies and LED Throwies
- LEDs (Light Emitting Diodes - sold at Radioshack and other electronics stores)
- 3-V batteries (sold at the same place... note the common 1.5 V batteries aren't powerful enough to light an LED)
- small magnets (for throwies)
- tape (optional for glowies, necessary for throwies)
- Examine an LED. Notice how one prong is longer than the other. Now look at the battery. The smooth flat side is the positive (+) side, while the side with the ring is the negative (-) side.
- Insert the battery into the LED with the long prong of the LED on the smooth positive (+) side of the battery. That's it! You've made an LED glowie! You can use the LED glowie for any application where a little light would brighten things up. Seal the battery portion of the LED glowie with tape or wax if you think it might get wet.
- Now, if you want to make an LED throwie, tape a small magnet onto the positive (+) side of the battery. Toss the LED throwie at your refrigerator or whatever.