Question About Light Bulbs and DC Power?

Question About Light Bulbs and DC Power? 1

Well, any bulb using a filament as the source could be lit with DC current. You would just have to short the current on the wire. But you would get MUCH less light. You might also destroy the source of electricity, like the battery or the AC adapter. Both would overheat to the point of melting

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what are the similarities between candles and light bulbs?

emission of heat and illumination

Question About Light Bulbs and DC Power? 2

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Current change as you add light bulbs?

The current in a series circuit is the same at all points in that circuit. When you add light bulbs in series, the total resistance increases, so the current is less, but it is the same for all points in the new circuit. The more bulbs you add, the less light you will get from each bulb, and for the sum of all the bulbs combined.

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who made the light bulb ?

(a) The first light was made in 1800 by Humphry Davy (A piece of carbon) (b) The second person was Sir Joseph Wilson Swan (1828-1914) carbon filamant paper, in 1878 he demostrated hin new electric lamps in Newcastle, England. (c) The inventor Thomas Alva Edison (in the USA) experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours.

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Need help with light bulb/fixture problem.?

It wo not be a problem with the wiring since it's the same service throughout your house. The fixture is just a switch that turns the power on and off, so that's not it. I would guess it may be that you use this fixture more than the others. Light bulbs burn out almost always when they are turned on. You will never see one burn out while it's on.The surge of current blows them out after many on-off cycles have weakened the filament. Think about how often you use this one compared to others in your home

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do regular light bulbs contain murcury ?

fluorescent bulbs, yes. your standard incandescent bulbs, no.

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do you like light bulbs or candles?

candles. i like to play with fire!

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Why will the banning of incandescent light bulbs make US greener?

Yea if they issue was really about saving energy then they would produce LED light bulbs on larger scale as they use alot less power than the CFL ones and last longer

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are they going to stop using the round light bulbs?

Actually, I think you are confusing some dates. The end of the world is in 2012. The incandescent light bulb bill passed by congress in 2007 will ban them by 2014. Although they are going to begin by banning incandescent 100 watt bulbs by 2012.

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All of them although admittedly, fluorescent are the hardest to work with because.they flicker (which is solved by using multiple bulbs at the same time in the same spot). You should match the white balance setting in your camera to the type of bulb you use in your lighting. Most of the time, Auto gets it right though

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How do these new energy saving light bulbs work?

Physics. Oh my. Not my strong suit. What I can say about the bulbs is pretty basic. They do not have a filament inside, but mercury vapor instead, like standard fluorescent tubes. Regular light bulbs - incandescent bulbs - create light by heating a filament inside the bulb. The heat makes the filament white-hot, creating the light that you see. Just so you are aware, halogen light bulbs create light through the same method. Because incandescent (and halogen bulbs) create light through heat, about 90% of the energy they emit is in the form of heat (also called infrared radiation). Fluorescent light bulbs use an entirely different method to create light. Both compact fluorescent bulbs and fluorescent tubes contain a gas that, when excited by electricity, hits a coating inside the fluorescent bulb and emits light. (This makes them far more energy-efficient than regular incandescent bulbs.) The fluorescent bulbs used in your home emit only around 30% of their energy in heat, making them far cooler.

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