A light bulb lights up when electricity is applied, and it has a bulbous shape.
Q. How do people know how a bulb looks in the past years it has changed and and it has diffrent shapes.
A. The same way that they know that a phone dial was called a 'dial' because it was a circular like the face of a watch. Oh, right.
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A light bulb is called a light bulb because it contains a filament that produces light when electricity passes through it. The bulb is made of glass to protect the filament and to allow light to shine through. The term "bulb" refers to the rounded shape of the glass casing.
The swirly light bulb is called a compact fluorescent lamp (CFL). It is a type of energy-efficient light bulb that produces light by using electricity to excite the gas inside the bulb to create illumination.
It is the filament.
The wire inside a light bulb is called a filament. It is typically made of tungsten and emits light when an electric current passes through it, heating it up to produce light.
The light bulb was originally called the "electric lamp" or the "incandescent lamp" when it was first developed by Thomas Edison.
The metal bit at the bottom of a light bulb is called the base. It serves as the connection point between the light bulb and the socket, allowing electrical contact to power the bulb. The base also helps secure the bulb in place and provides stability during use.