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Light Bulbs and Artificial Lighting
Artificial lighting has become standard in the homes and companies of most countries. It is used for concert effects, growing food, and reading a book in bed at night.
2,482 Questions
What is difference between regular household light bulbs and led bulbs?
LED light bulbs definitely are more energy efficient than regularly normal light bulbs. Depending on the usage, LED lights can also last maybe twice or three times as much as regular bulbs. LED ones are better.
If the filament of the bulb is broken would the circuit be complete?
If the bulb's filament is broken, the whole circuit becomes open. If the bulb is in a series circuit or is the only bulb, the electricity would no longer flow. If the bulb is in a parallel circuit, along with other bulbs, then only the blown bulb would go out, and the other bulbs would still work.
Why do lights in a parallel circuit burn brighter than in a series circuit?
In a parallel circuit, more power is provided to the lights. Power = V2/R . The resultant resistance of the circuit is lower, and the potential difference is not divided as in a circuit in series. Thus, lights in parallel burn brighter.
Additional InformationA lamp's power rating only applies at its rated voltage. Because the voltage across each branch of a parallel circuit is the same, each lamp can be supplied with its rated voltage and, therefore, will operate its rated power. In a series circuit, the voltage appearing across each lamp will be considerably lower and, so, the lamps will not operate at their rated powers.Why do incandescent light bulbs waste a lot of energy?
Any form of electrical lighting will produce both light and heat, and with inefficient, incandescent lighting you get a higher proportion of heat rather than light, as compared to other forms of lighting such as fluorescent, or the most efficient, which is LED, which turns almost all of the electric power that it consumes into light, and very little into heat.
How do you dispose CFL light bulbs?
Incandescent bulbs contain lead. Contact your local garbage or recycling facility to ask about their disposal methods, whether or not they will pick them up for your house or if you have to drop them off. Store them in the packaging you received them in until proper disposal.
What are light bulbs that save energy called?
EcoSmart, ArmorLite, Philips, GE, and Sylvania all make a line of energy saving light bulbs. They all manufacture LEDs, CFLs, and halogen bulbs. All of these bulbs are comparable in performance and all of these products are energy savers.
The switch will not increase the current. The only thing that will increase the current is adding a larger load.
Another Answer
To maximize current flow in a circuit with 2 Flashlightbatteries, 2 Flashlight bulbs, and a switch, set aside the bulbs, put the batteries in series, connect the switch between the end poles of the battery set, and close the switch. The batteries will get hot and probably leak electrolyte, and be drained in seconds.
If you want to maximize current through the circuit withthe bulbs in it, connect the bulbs in parallel to each other, and in series with the switch.
Who was the creator of the light bulb?
As with many important developments, many people contributed to developing the fluorescent lamp.
The phenomenon of fluorescence was first explained in the mid-19th century by George Stokes at Cambridge University. Other scientists including Heinrich Geissler (Germany) and William Crookes (UK) experimented with generating light by passing an electric current through gas-filled tubes. These devices produced various colors rather than white light, though, and found commercial use only for advertising and entertainment.
Development of a gas-filled bulb that produced white light proved elusive. Even great inventors like Thomas Edison and Nikola Tesla were unsuccessful. A major reason for the lack of progress was that efforts concentrated on finding a gas that would itself glow white. It remained for physicist Arthur Compton to make the leap of producing light indirectly via a coating on the tube's glass rather than relying on the gas itself.
Commercial development started in 1934 when Compton reported to the lamp department of the American company General Electric on successful experiments with fluorescent lighting at General Electric Co., Ltd. in Great Britain (a company unrelated to its American namesake). Compton's work was refined by other GE scientists and engineers; the first commercial fluorescent lamps went on sale four years later, in 1938.
The large number of people who were directly or indirectly involved in developing fluorescent lighting resulted in protracted battles - both in and out of court - over who should receive credit, and to what extent each contributed. Despite partisans who would assign primacy to Tesla and/or Edison, there's no historical evidence that either was successful. Interestingly, one person who does receive mention, although not formal credit, is a Filipino electrician named Agapito Flores. He independently came up with the same idea as the much more renowned Compton, but dates on his work and Compton's show that Flores reached his conclusions later.
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What is most energy efficient led lamps or bulbs?
The most efficient outdoor light bulb would the 5 watt Light emitting Diode light bulb also know as the LED bulb. They are small lights with miniature sockets or made to fit into conventional sockets.
Can I put a UV bulb to power a lava lamp?
The dark black incandescent type UV bulbs will work as they actually get hotter than the equivalent standard incandescent bulb of the same wattage, but the compact fluorescent type UV bulbs run too cool.
How do you replace light bulb in jenn-air microwave?
you take it out,then put another one in!!!dah!!!
1. Disconnect power to oven.
2. Remove the 2 screws located in front on top of microwave securing grille.
3. Remove grille (slide to right then out).
4. Remove the screw securing metal light cover.
5. Remove the filter and metal light cover.
6. Remove screws securing bulb holder (if needed).
7. Remove light bulb
Install new light bulb (20 watt halogen do not touch with skin).
Reverse the above instructions for assembly
Why is argon used for light bulbs?
There are many different types of light bulbs. The standard filament style bulb is usually flooded with an inert gas, or pulled into a vacuum, to keep the filament from self destructing. Originally, Filaments where composed of a carbon thread. Since carbon is a resistor of electric, it can generate large amounts of heat/light.This caused almost immediate failure due to overheating and mixing with oxygen which accelerated its failure. A light bulb can in fact burn, without inert gases or a vacuum, however the life of the filament is very short (.5 seconds to 3 seconds from my experience) Florescent bulbs are slightly different. Florescent bulbs use a mixture of Argon and Mercury vapor. Electrons conduct from one end to the other while "bumping" into the mercury atoms. The electrons in turn excite the mercury vapor, when this gas returns to its unexcited state they produce ultraviolet protons. When these protons hit the phosphor coating inside the tube they create light. In summary, different styles of light bulbs use gas in different methods. However The most prevalent method is to reduce the amount of heat caused by an electrical reaction inside a tube.
How do you change mr2 fog light bulbs?
i would suggest taking it to a garage. the battery is in the way on one side and requires you to completely remove it and the plate it sits on before you can even get close to the back of the headlight. and if that wasn't enough, after removing those two things there are a few hoses in the way that are almost impossible to move out of the way. on the bright side, the other headlight isn't nearly as hard...
How are light bulbs efficiency increased?
The brightness of a standard bulb is directly proportional to the amount of voltage drop across the bulb itself. Thus, to increase the brightness :-
- Pass more current across the bulb by reducing the resistance of the circuit
- Increase the voltage across the bulb, or the circuit. Change the supply.
What is The electrical power used by light bulbs measured in?
Electrical power is measured in watts (W), just like any other type of power.
Power is the rate at which energy is used. Energy is measured in joules (J), though utility bills usually measure energy using kilowatt-hours (kW·h) instead. 1 kW·h = 3,600,000 J.
Light bulbs last longer when they are filled with what gas?
Incandescent light bulbs need to have an inert gas or a vacuum to prevent the filament from being surrounded by air (with oxygen) which would enable the filament to catch fire and burn. Inert gases used include argon, krypton and nitrogen or some combination of them.
If the voltage of a battery was increased what would happen to the light bulbs brightness?
Yes it would start glowing more brightly but at a certain point it would burn ou if you go on increasing the power.
How much cents does a 60w light bulb have?
You just have to divide the watts by the voltage to find the amps. For example 60 watts on a 120 v system would take ½ amp.
You just have to divide the watts by the voltage to find the amps. For example 60 watts on a 120 v system would take ½ amp.
Do incandescent light bulbs not get as hot as fluorescent light bulbs?
No, given the same lumen rating. Florescent lights are more electrically efficient than incandescent bulbs. Be careful, fluorescent bulbs currently contain mercury and should be handled and disposed of properly.
For more information, you may also want to read.
http://home.howstuffworks.com/question236.htm
What would happen if one of a set of light bulbs burn out in a parallel circuit?
It depends on the circuit. If it is a constant-current circuit, any light bulbs connected in parallel with it will become brighter.
If it is a constant-voltage circuit like a typical household circuit, nothing will happen.
Any connected in series with it will go out.
An energy saving light bulb is simply a fluorescent light-bulb in a small housing with a built in starter . The gas used for it will be the same as a standard strip-light which is a tube filled with low pressure mercuric oxide and an inert gas like Argon Neon or krypton.
Who put light bulbs on the Eiffel tower?
According to the French wikipedia site, there are 20,000 strobe lights which were placed on the Eiffel Tower to celebrate the year 2000. They are still there with their 40 km of wiring and light up for 10 minutes on the hour every hour after sunset until 1 or 2 am.
http://fr.wikipedia.org/wiki/Histoire_synth%C3%A9tique_de_la_tour_Eiffel
light has various uses aside from seeing in the dark. Light can be used for operations using lasers wich lessens the insition size and minimizes recovery time, it is used for combat purposes for guiding missiles into an specific location and it is used in communitcations transmiting data using light running through fiber optic.
How was life before light bulbs?
Typically the first to be used for light was the fire or campfire. After that candles or wax. After the candles, a Kerosene lamp was usually used. Some cities or villages used gas lighting before electricity was established. By gas I mean natural gas or propane burning inside a "mantle" in a lamp specifically made for this. This method was actually quite bright in the amount of light it produced. Much like the Coleman brand camping lamps you see people use in campgrounds.
How many amps does a 50 watt bulb use?
You just have to divide the watts by the voltage to find the amps. For example 60 watts on a 120 v system would take ½ amp.
