When someone makes an invention, soon there will be others who would work on improvising it. This is exactly what is happening with a new method of converting a calculator to a metal detector. Angus MacGyver was perhaps the first person to...

Here is a simplest method to construct a basic AM radio. The idea may sound complex but its not so. What you need to make this radio are just some simple things of daily use to make this machine to entertain you and something you can boast about...