- Why does this device work?
This device currently doesn't work. However it is supose to work byThe tunable filter consists of the coil and the dial (with the external antenna
The rectifier consists of the razor
blade and the safety pin
The filter action is achieved with
the external earpiece.
- What does it demonstrate about electricity?
- What have you done to improve the design of the device?
- What advice can you offer to future builders of the device?
- Who invented the device? when? why?
- What are some things you have learned about electricity from doing this project?