What do light bulbs do?

Answer 1

They use less energy to produce light, and thus save energy and help to save the environment through conserving electricity. The energy efficient light bulb applies fluorescent lighting technology to replace incandescent lighting technology. In the latter, a filament is heated past red hot to white hot to emit useful light. This creates a lot of heat, and is inefficient. The fluorescent tube screws into a socket just like the incandescent lamp, but has electronic circuitry built in to supply the elevated voltages necessary to operate the coiled fluorescent tube. Inside that tube is a gas mixture that is ionized by the voltage, and the ionized gas emits useful light. This process is much more energy efficient than incandescent technology.

Answer 2

It depends on the type of bulb.

• Original incandescent bulbs use electricity to heat a wire to make it glow.
• Fluorescent and CFL bulbs use electricity to ionize a gas to make it glow.
• LED bulbs make rare materials glow by using current to directly excite the electrons.

Answer 3

light bulbs provide light. they don't just use energy to provide light but some of the energy is used in heat as well.

Answer 4

A light bulb produces light on demand when it is connected to a sufficient source of electrical energy. Many types of light bulbs also produce heat as a byproduct.

Answer 5

* light bulbs can kill you be very carfull

Answer 6

it gives up light and is more efficient than candles