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Q: Why are fluorescent lamps brighter than filament lamps?
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Continue Learning about Physics

Which light bulb uses more energy?

Incandescent and halogen light bulbs use more energy than compact fluorescent lights and LED lights. Fluorescent lamps with magnetic ballasts use more energy than fluorescent lamps with electronic ballasts.


Do two light bulbs in a series circuit have the same brightness?

yes but they will each be less bright then if there was only one light bulb in the circuitAnswerIt depends on their power ratings. If they are different, then the lamp with the lower power rating will be the brighter. The reason for this is that lower power lamps have a greater resistance than higher power lamps and, so, a greater voltage drop appears across the lower power lamp, making them brighter.


What is the difference between cCFL and CFL?

A CFL, or compact fluorescent lamp, is a type of fluorescent lamp intended to replace traditional incandescent lamps. Advantages of CFL's include lower power use, a longer rated life, and significantly lower greenhouse gas emission. However, these lights tend to have higher purchase prices than those of incandescent alternatives. A CCFL, or cold cathode fluorescent lamp, is any type of fluorescent lamp in which the cathode is not independently heated. Neon lights are common examples of CCFL's.


Why do energy saving light bulbs use less electricity?

Energy-saving lamps, such as normal and compact fluorescents, use more of the energy they consume to produce light rather than heat. An incandescent light converts electricity to heat and light is simply a by-product of the heat.Fluorescent bulbs still have incandescent filaments, but they are used to emit the electrons that run the length of the tube colliding with the vapourised mercury and producing light.Mainly because they run "cool", a fluorescent lamp uses only about one fifth - 1/5 - of the electrical energy used by a lamp that has a hot, incandescent filament.Another good thing about fluorescent lamps is that they can have a useful life that is between 5 and 10 times longer than an incandescent lamp, saving even more money over a period of years. On the other hand, turning a fluorescent lamp on and off repeatedly, so that it only runs for for short periods, will radically shorten its lifespan. Also CFL bulbs tend to cause large amounts of radio frequency interference.If a fluorescent tube or 'bulb' is broken, the mercury is released which is poisonous.Another opinionSaying that the mercury in mercury lamps is dangerous is an urban myth which comes from the old styles of mercury discharge lamps and fluorescent tubes used over fifty years ago, which did indeed contain about a gram of liquid mercury!While in use such a lamp was not dangerous at all, but if the glass tube or bulb got broken the "blob" of mercury could certainly be dangerous to human health if anyone picked it up with their bare fingers or swallowed it to see what how it tasted.Mercury is the only example we have on Earth of a metal that is in its liquid state at room temperature. It was such a "curiousity" that several people did get ill - and may have died - from poisoning by mercury, but not much of it would have came from old fashioned "mercury lamps"!That said, anyone who advises you that "fluorescent lights contain mercury which is poisonous" about today's fluorescent lamps is making a very misleading statement which could be intended just to frighten people.No matter whether they are the "compact" or the "long tube" types, modern fluorescent lamps contain only an extremely tiny amount of a special mercury amalgam so that, whilst a modern lamp is in use, there is absolutely no danger to anyone.However, if such a lamp gets broken, then care must be taken to sweep up all the fragments carefully and dispose of them sensibly in something strong enough not to be cut by the broken glass, such as an old corrugated cardboard box or similar bound around with gaffer tape to stop it from being opened easily.Today, the main danger to people is the risk of getting cuts from the shards of glass, not from mercury poisoning!The answers to the Related Questions shown below give a lot more information about how compact fluorescent lamps work and about the very good savings you will achieve in the cost of electricity if you use them instead of normal incandescent lamps.


Fluorescent light more energy efficient than incandescent light?

Yes.

Related questions

Is Fluorescent lighting brighter than incandescent?

It is much less efficient. A lot of the energy it uses is converted to heat, rather than light. That's why it burns hotter than a fluorescent.


Which light bulb uses more energy?

Incandescent and halogen light bulbs use more energy than compact fluorescent lights and LED lights. Fluorescent lamps with magnetic ballasts use more energy than fluorescent lamps with electronic ballasts.


What kind of color is brighter fluorescent or neon color?

The true answer to this brain buster is that neon colors are a much brighter substance than flurescent.


Which color is brighter fluorescent or neon?

Neon is brighter than fluorescent. On cars it is anyways. I paint cars for a living and I have found from experience that neon colors are brighter than fluorescent colors. So if you want a bright green, pink, orange, yellow, blue, red, etc pretty much any color is brighter in neon. If you want the color to be a bit duller than you should go with fluorescent colors. I don't care about ur cars! I wanna no wot colour neon gas is wen electricity passes throo it! TELL ME SUM1!!!!!!!!!!!!!!!bitch


What is the difference between daylight fluorescent and warm white fluorescent?

The light from a "Daylight" type looks brighter to the eye than "Warm White". The "Daylight" type is supposed to make colors of things (clothes, furniture, etc.) look more natural, as if they were outside in daylight. The "Warm White" type is supposed to be more restful for our eyes when we have to live or work for long periods using artificial lighting. It also is supposed to look more like the light from conventional incandescent filament lamps.


Is it a myth that leaving compact fluorescent lamps on rather than switching them off and on when needed uses more energy and is worse for the environment?

Leaving the lamps on 24/7 uses more energy than turning them on only when needed. It is equally true to say: A) It is not a myth that leaving incandescent filament lamps on 24/7, rather than switching them off and on when needed, uses more energy and is therefore worse for the environment. B) Using incandescent filament lamps instead of compact fluorescent lamps always uses more energy and is therefore worse for the environment. This remains true whether they are left on 24/7 or switched on and off when needed. If you switch the light off and on once each minute (or less), then there might be a case for leaving them on. Not only will they last longer, but the power lost to get them up to temperature will be reduced.


LED power consumption vs Fluorescent lamp?

LED's consume much less power than fluorescent lamps. And last much longer.


Between fluorescent and incandescent which saves electricity?

Fluorescent lamps deliver more visible light than incandescent lamps using electric power at the same rate. (But incandescent lamps deliver more heat. Just depends on what purpose you're using light bulbs for.)


Why fluorescent lamps not used on streets?

In colder climates a special ballast and lamps have to be used. These are known as cold start ballasts. The cost is much greater using fluorescent fixtures than HID fixtures and the light output is much less.


How do fluorescent light bulbs help the environment?

Fluorescent lights help the environment by conserving energy and being more efficient.Traditional bulbs produce about 15 lumens per watt, while fluorescent bulbs produce between 50 to 100 lumens per watt. This makes fluorescents bulbs five or six times more efficient than traditional bulbs.Also, the concepts behind the two bulbs are different. Traditional, or incandescent bulbs create heat in order to create light, which wastes a lot of energy. Fluorescent bulbs use a gas containing argon and mercury vapor that creates ultraviolet photons.This helps the environment by not wasting resources.Alternative AnswerFluorescent lamps might lower your electricity bill, but they use more energy and resources to manufacture, compared with incandescent lamps. They also contain mercury and other toxins. So fluorescent lamps probably do more damage to the environment than incandescent lamps. So, if you want to save on your energy bills, use fluorescent lamps; if you want to protect the environment, then use incandescent lamps.


Why do fog lamps show up more in fog than other lamps?

Fog lamps on a car show up a lot more in the fog than other lamps simple because they are much brighter. It is therefore advised that you only use them in extreme cases of fog as it can cause issues for other drivers if you have your fog lights on when there is little to no fog.


Why do you use compact fluorescent lamps instead of incandescent bulbs?

A compact fluorescent lamp or CFL has the advantage of consuming less power.It works in the same way as a fluorescent tube light however it is made in a much more compact shape. This means CFLs can be used to replace ordinary light bulbs which have incandescent filaments.If you replace your ordinary light bulbs with CFLs they will use only 20% (one fifth) of the energy to give you the same amount of light output.More informationEnergy-saving lamps, such as normal and compact fluorescents, save a lot of money compared to normal lamps which have an incandescent filament because of the fact that fluorescents don't use a high-temperature filament that produces more heat energy than light energy.Mainly because they run "cool", a fluorescent lamp uses only about one fifth - 1/5 - of the electrical energy used by a lamp that has a hot, incandescent filament.Put another way, you can use five fluorescent lamps, each giving out the same amount of light as one incandescent, for only the same total electricity running costs.Another good thing about fluorescent lamps is that they have a useful life that is between 5 and 10 times longer than an incandescent lamp, saving even more money over a period of years.