How to make a lemon battery A lemon battery is made with lemon and two metallic such as copper and zinc.… Read More
Diy resistor from lead pencil Diy resistor from lead pencil ,This is a demonstration of variable resistance. The core of… Read More
How to make an Electroscope How to making of an Electroscope : The electroscope is an easy-to-make device and should… Read More