Make a Metal Detector (easy)
- Portable AM and FM radio
- Electric tape
Let's MAKE it!
- Hold the calculator and radio back-to-back.
- Tape them together with electric tape
- Make sure that the radio is switched to AM
- Plug in the headphones
- YOU GOT YOURSELF A METAL DETECTOR!
How You know its Working
As you get the metal detector closer to a metal object the buzzing from the radio becomes louder.