Well, here is one good use of them, make a High Voltage Water Bottle Capacitor! The bottle capacitor is very similar to the Water Leyden Jar I made a while ago, but the only difference is it uses a bottle, not a jar.
The bottle capacitor is a high voltage capacitor, high voltage capacitors are one of the most dangerous things you could ever use in electronics. A large charged bottle capacitor is potentially lethal if you touch its live terminals, and a small charged bottle capacitor can cause injury and it still be lethal in some ways.
So, I am not responsible what ever you do with this information and bottle capacitor.
Step 1: What you will need...
- A bottle of any kind
- Stainless steel nail
- Aluminum foil (or even better, use AL foil tape if you have any!)
- Tape (you won't need it if you are going to use foil tape
Step 2: And the tools...
- Hot glue (or anything to seal up the container to prevent water coming out)