The behaviour of the needle of the magnetic compass under the influence of a magnet is said to have endlessly fascinated Einstein when he was a child.
Diamond is a precious stone used in jewellery which consists of a clear and colourless crystalline form of the pure carbon. Diamond is known to be the hardest naturally occurring substance owing to the arrangement of the carbon atoms.
Electroplating is the process through which one metal is plated to another metal through hydrolysis. It is usually done for decorative purposes along with prevention of corrosion of metals.
Materials that allow the electric current to pass through them easily are known to be conductors of electricity. Electrical conductivity is the measure of the ability of the substance for allowing the flow of electric current. Some of the liquids are also good conductors.