Wondering what just went bump in the night? The glowing eyes of soda-bottle ghosts are a dead giveaway. Here’s how to make it!
Make a Glowie
Tape an LED to a battery and you’ve made a “Glowie.” This simple circuit is the secret ingredient for making glowing creatures like the ghosts above.
1. Sandwich a battery between the legs of an LED. Make sure the LED’s longer, positive (+) leg is on the smooth, positive (+) side of the battery, and its shorter, negative (–) leg is on the bumpy, negative (–) side of the battery. The LED should light right up. If it doesn’t, flip the battery and try again.
2. Use scissors to cut a piece of tape, and tape the LED legs and battery tightly together.
Make a Double Glowie
Depending on your materials, you can tape up to three LEDs onto a single 3-volt battery and get several hours of light from the assembly. A single Glowie or Throwie can last up to three days. A double or triple Glowie or Throwie won’t last as long, but it can make things a whole lot more colorful! The more LEDs you add, though, the dimmer they’ll be, since they share one battery. Experiment to see what works best for you.