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What form of energy that is not useful is being released from the flashlight when it's on?
Wiki User
∙ 8y ago
Incandescent light bulbs, including those used in traditional flashlights, generate heat by running an electric current through a wire filament. This heats the filament to incandescence, which generates light.
But it also generates a lot of heat; up to about 80% of the energy is released as heat rather than light. Sometimes the heat is a useful side effect; for example, in a terrarium or over a buffet heat lamp, or in a cold room in the winter. But generally the heat is wasted energy.
More modern flashlights, and many modern light fixtures, use Light-Emitting Diodes, or LEDs. These release about 60% of their energy as light. There's still some waste heat, but a much higher proportion of the energy consumption is light rather than heat.
An intermediate development called "Compact Fluorescent Lights", or CFLs, were a major disappointment; they saved some energy but were hideously expensive, short-lived, and contained hazardous chemicals if they were broken.
Flavio Mitchell
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What is energy being released?
Kinetic energy.
How is petroleum energy released?
It is released by being burned, or ignited.
Light and heat energy are being released from the fire where is the energy come from?
Energy is released from the chemical bonds in the substance that's burning.
Is elastic energy useful in a bouncy ball or is it wasteful?
It is usefull because how would the ball bonce without the being elastic energy in it???
What form of energy that is not useful is being released from the flashlight when it is on?
Incandescent light bulbs, including those used in traditional flashlights, generate heat by running an electric current through a wire filament. This heats the filament to incandescence, which generates light. But it also generates a lot of heat; up to about 80% of the energy is released as heat rather than light. Sometimes the heat is a useful side effect; for example, in a terrarium or over a buffet heat lamp, or in a cold room in the winter. But generally the heat is wasted energy. More modern flashlights, and many modern light fixtures, use Light-Emitting Diodes, or LEDs. These release about 60% of their energy as light. There's still some waste heat, but a much higher proportion of the energy consumption is light rather than heat. An intermediate development called "Compact Fluorescent Lights", or CFLs, were a major disappointment; they saved some energy but were hideously expensive, short-lived, and contained hazardous chemicals if they were broken.
Which is an example of electrical energy being converted into light energy?
a flashlight bulb an LED the coil in a toaster
What is energy being released?
Kinetic energy.
How is petroleum energy released?
It is released by being burned, or ignited.
What demonstrates energy being released as heat?
solar energy, kinetic energy and political energy
What energy is being emitted from a flashlight?
The chemical energy stored in batteries gets transformed sets into electrical energy through the wires. This then gets transformed into light energy that you see.
What type of energy is being released when a radio is playing?
its kinetic energy ;)
Light and heat energy are being released from the fire where is the energy come from?
Energy is released from the chemical bonds in the substance that's burning.
Why is energy released in a exothermic reaction?
Energy is released in an exothermic reaction because bonds are being formed.
Is elastic energy useful in a bouncy ball or is it wasteful?
It is usefull because how would the ball bonce without the being elastic energy in it???
When energy is absorbed or released is it chemical or physical change?
That depends on the type of energy being absorbed or released or exchanged.
Is the Streamlight UltraStinger Rechargeable Flashlight capable of being upgraded to LED?
The Streamlight UltraStinger Rechargeable Flashlight is already an LED flashlight, it needs no upgrade.
What form of energy that is not useful is being released from the flashlight when it is on?
Incandescent light bulbs, including those used in traditional flashlights, generate heat by running an electric current through a wire filament. This heats the filament to incandescence, which generates light. But it also generates a lot of heat; up to about 80% of the energy is released as heat rather than light. Sometimes the heat is a useful side effect; for example, in a terrarium or over a buffet heat lamp, or in a cold room in the winter. But generally the heat is wasted energy. More modern flashlights, and many modern light fixtures, use Light-Emitting Diodes, or LEDs. These release about 60% of their energy as light. There's still some waste heat, but a much higher proportion of the energy consumption is light rather than heat. An intermediate development called "Compact Fluorescent Lights", or CFLs, were a major disappointment; they saved some energy but were hideously expensive, short-lived, and contained hazardous chemicals if they were broken.
