0
Battery powered flashlights are used as source of light where normal cabled electrical power can not reach or if there is a power outage. To define function of flashlights, these basically convert electrical energy stored as chemical energy in batteries to light and some wasted heat in the lamps.
As semiconductor LEDs are more energy efficient, specially designed bright LEDs are replacing conventional flashlight lamps in most modern flashlights.
- Neeraj Sharma
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
Does flashlights use electric chemical or mechanical energy?
They use chemical energy and it converts to electrical energy in the bulb and after becomes electomagnetic energy or radiant energy which is the light.
What are 3 things that visible light can be emitted by?
stars, flashlights, toasters, CFLs, LEDs, fireflies
What should you do in a emergency with no electrical power?
Answer this question...use candles lanterns flashlights
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.
Where do visible light waves come from?
There are a great many sources of visible light. They include: -- stars -- fire -- volcanos -- lightning -- incandescent lamp filaments -- electric sparks/arcs -- fireflies -- excited/ionized gas -- flashlights -- stove burners
Do they use xenon for light in flashlights?
They can.
Why do flashlights exist?
Flashlights exist so you can have a portable light source. You can use flashlights where there are no other types of lights. You can use them in emergencies, and you can use them in places where other types of lights would be awkward or hazardous.
What do people use flashlights for?
A small, portable light source.
When do people use flashlights?
People use flashlights when they are in need of a light source. If the power goes out at night, the use of a flashlight is essential to get around the house. Flashlights can also be used in emergency situations outside of the house.
What can you use you to provide light?
you could use tons of things to provide light, like flashlights and lamps
Why do C.S.I.s always use flashlights?
The light from the flash light helps you focus on that specific spot!
Do flashlights have light energy?
Flashlights have light energy if they are on. The energy is stored as chemical energy in the battery when it is off.
Which gas is used in flash light?
Many regular flashlights use argon in the light bulbs. For camera flashes, many use xenon.
What are the advantages of flashlights?
Flashlights can provide mobile light for outdoor, emergency, search and rescue.
Are led flashlights effective?
LED flashlights are effective. They use powerful white-light-emitting diodes, and are more efficient than incandescent lamps, in terms of battery usage.
Why did people need a flashlight in the old days?
people didn't use flashlights in the old days. they needed lamps and other means of light, but flashlights didn't exist yet.
What are the US police flashlights configurations?
Different stations will use different flashlights in the United States. Most stations have switched over to the much brighter light provided by an LED flashlight.
