At the base of the light bulb there are two metal contacts, an electrical foot and screw thread contact, which are connected to two stiff wires. The parts of the light bulb work together in order to complete the electrical circuit, creating an electric source for the light bulb to emit light. In order for anything to work electrically, an Electrical Circuit needs to be established first. In this picture from HowStuffWorks, you can see that there is a (n): When the light bulb has a power supply, such as being screwed into a lamb, an electric current will flow within the circuit, and then light is emitted. Both light bulbs of the mid 1800s were effective enough then that the structure of the light bulb has not changed much.Ī glass light bulb will contain several parts in order to create energy. In 18, both Englishman Sir Joseph Swan and American Thomas Edison were able to create lighting device, called a light bulb.
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