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A flash light generally makes light using a light bulb, which contains a filament. The filament is typically made from tungsten. It is very thin, but capable of withstanding extremely high temperatures. Electricity, from an internal power source, is passed through the filament. The filament has a resistance, so the current creates a very large heat in the wire. Because the wire is so thin, it heats up very quickly, and this excess energy is given out as light, and heat.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoIn a straight line.
At the speed of light.
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How do you use it a flashlight?
flashlight is always lighting for people in dark. There are other more applications from differrent color light, such as imalent flashlight, spot light is for daily use, UV light can check ID card or ticket, red light can be used warning in traffic.
What do a fire and a flashlight have in common?
A fire and a flashlight are able to add light to the dark to help people see objects.
What Energy Transformations are in a flashlight?
it would be heat to light or chemical to electrical to light
How did the flashlight impact other peoples life?
it made them see if there was no light or electricity.
Can you light a flashlight with some lemons?
Yes it is possible to make an acid battery using the acid in a lemon. (you would need allot of lemon batteries to light a flashlight bulb though - try using a diode light bulb) For more information on how to do this look in the link I will place below.
How do you know the speed of light is correct since a light wave has no beginning or end it would seem impossible to measure?
Turn your flashlight on and off. The light wave begins and ends. The light wave from your flashlight will take 1 nanosecond to travel one foot from your flashlight.
Which is the brighter - the light coming in or the light from the flashlight?
Sun light is more brighter than the light from flashlight in house.
Which is brighter the light coming from in or the light from the flashlight?
Sun light is more brighter than the light from flashlight in house.
Is a flashlight is a output?
A flashlight outputs light and heat.
What is the output in the system of a flashlight?
The output of a flashlight is its light
What is an output in a flashlight?
A flashlight outputs light and heat.
Does a light switch change chemical energy directly in to light energy or does a flashlight?
The flashlight does.
How energy is transformed light from flashlight?
Battery electric energy is converted to light energy of flashlight.
Is a flashlight good model for suns light energy hit earth?
Flashlight is not good model to test sun light hit earth. The light of flashlight is too small energy to compare sun light.
What does a flashlight produce if its switch is on?
A flashlight can produce light and heat if its switch is on.
What happens to photons if you just click a flashlight on and off once do photons decay or travel indefinitely?
If they have room to travel (e.g., you shine the flashlight towards the sky), they can travel on indefinitely.
Explain one reason why the flashlight might not light?
A flashlight may not light if there is no energy source or in this case battery.
