LIGHT BULB
Light bulb is an electric light, in which a filament gives off light when heated to incandesence (emitting lights as a result of being heated) by an electric current. In 1802, Humphry Davy invented the first electric light. He experimented with electricity and invented an electric battery. In 1850 an English physicist named Joseph Wilson Swan created a “light bulb” by enclosing carbonized paper filaments in an evacuated glass bulb. How to Buy the Right Light Bulb Check your bulb base size and bulb shape. Determine much light you need. Select the right color of white for your light bulb. Find out if you need to dim your light. Find out if your light bulb will be used in an enclosed fixture or recessed can. Choose the right type of light bulb. There are three basic kinds of light bulbs on the market: incandescent, halogen, and CFL (compact fluorescent light) Halogen bulbs are a type of incandescent that gives a close approximation of natural daylight, known as "white light." ...