If you put your hand close to the light bulb you will feel the low frequency electromagnetic radiation as heat. Most of the radiation from a incandescent light bulb is heat and not light. He also invented a number of basic electrical devices that are part of our modern life. Check your library or book store for more information about inventors. You can learn more about electricity and light in physics courses and general physics books.
Water boils if it is heated above a certain temperature.
Boiling is the conversion of a liquid to a gas. The conversion of a substance from one state to another occurs at definite temperatures and pressures. Water changes from solid to liquid at 32 F degrees and changes from liquid to gas at 212 F degrees at sea level air pressures. Temperature is the measure of relative motion of molecules. Below 32 F the water molecules are locked into restricted motion within the solid ice crystals.