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The filament in the bulb gives off light.

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Q: What gives off light in tungsten light bulbs?
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Why tungsten bulbs use up so much energy?

90% of the energy used by a tungsten lamp is lost as heat because they depend on heating the filament until it gives off light. Only 10% is usable light.A 100 watt light bulb gives off 341 btu of heat.


How do light bulbs do work?

the wire travels to the bulb and this metal needle that the electricity hits it and it gives off light.


What light is responsible for growth in plants?

Any light that contains or gives off UV rays. (Light bulbs don't work)


Is a light of a flash light a ray of light?

Light is made up of light waves, which are different than normal waves because they do not need a medium, or a material to travel though. (Some examples of mediums are water, air, wood, metal...). Light waves come in different sizes, or wavelengths. Flashlights usually use incandescent light bulbs to produce light. Incandescent light bulbs produce light by heating a tungsten filament until it glows and gives off heat under the form of light waves.


What actually gives off light in a light bulb?

Electric current through a filament (thin spiral) of tungsten causes it to heat up enough to glow brightly.


Which gasses are used in electric bulbs?

There are no gasses used in an electric bulb. What's inside is something known as energy. It is known as this because it gives off light. Neon is a gas that is used in light bulbs.


What is the difference between a metal halide lamp and a halogen lamp?

A halogen bulb is a traditional tungsten filament bulb filled with a noble gas that gives off a soft, yellowish light. In a metal halide bulb, the light emitted is bright white or even bluish. They have a longer life than halogen bulbs, but their brightness can diminish over time.


Worlds longest lasting light bulb?

Probably a LED bulb, because it has no wear-out components.For example, a tungsten bulb filament gets thinner and thinner because tungsten sublimes off the filament and plates out on the glass envelope. CFL bulbs have hot cathodes with the same problem.LED bulbs only fail due to manufacturing defect or misuse.Answer:The current holder for longest lasting bulbs is The world's longest lasting light bulb is the Centennial Light located at 4550 East Avenue, Livermore Clifornia. Its claimed that the bulb is at least 110 years old


What is it that normal light bulbs give off much more than fluorescent light bulbs?

Heat.


How is light connected to heat?

Because, if it wasn't for heat, there would be no light at all. The sun is blazing hot and gives off light. Our light bulbs require heat to produce light. Many other things.


Which light bulbs give off all the colors of visible light?

Incandescent bulbs or if you prefer, plain old fashioned light bulbs, the ones with a filament (the bit of wire inside) that gets very hot and gives off light. They tend to give off a bit more at the red end of the spectrum, particularly the lower power ones but they do give off all the colours. Some run the filament at a sufficiently high temperature to give a pretty balanced white light. Most of the modern energy efficient bulbs give off light at a limited number of frequencies but much more light per watt of power that goes in.


Does the sun reflect light or gives off light?

gives off light