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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
How do you make a light bulb EXPLODE?
well you can get a hallow ball no holes attach a fuse fill the hallow ball with gun powder
What does the nitrogen inside a light bulb do?
Yes, modern incandescent bulbs are filled with an inert gas (argon,) but with a bit of nitrogen. Nitrogen is used because argon supports long sparks and leads to electric arcs and exploding light bulbs, and nitrogen interferes with this effect.
What happens if you add 2 light bulbs to a simple circuit?
A: There is no such a thing as simple circuit if the bulbs are put in series the light will dim if put in parallel both bulbs will light up the same provided the source can sustain the power increase
What would happen if you eat a light bulb?
You would bleed from the glass. and you would have hot lips afterwards.
What was the size of the first light bulb?
According to a book by Jack Trout and Al Reis, the first television set was produced by a company called Dumont Television.
What happens when you breathe in mercury from fluorescent light bulbs?
You won't have any immediate bad effects... but you should go see your doctor. There is a safe treatment for heavy metal poisoning that will remove the mercury from your body (and any extra lead, cadmium, and other heavy metals) called chelation. In the old days (1950s) we played with mercury in science classes. Now days we know that was sort of stupid, since we should try to avoid all sorts of toxins like that.
What is the difference between LED and incandescent lights?
Incandescents tend to be less efficient and use more electricity. A lot of the energy used tends to be converted to heat, rather than light. Fluorescents tend to give you more light for the buck! They run less hot, which tends to mean that more energy is being converted to light, rather than heat. Compact fluorescent bulbs (CFBs) are a good alternative to incandescent bulbs. They have the same type of sockets, so no rewiring is needed, and they cost much less to use while giving out the same amount of light. Their price is going down substantially, and most use very little, if any, mercury.
Why should you use the swirly light bulbs?
It is just to maximize the amount of tubing for gas, and thus maximum amount of light capable of being generated into the normal space of an incandescent light bulb. It does not have to be "swirly" to operate.
How many lumens does a 150 watt CFL give off?
A 150-watt light bulb uses energy at the rate of 150 watts, when it's turned on.
One place that was delighted to have the electric light was businesses -- now people could work late without worrying about the dangers of candle-power. Candles were tipped over and caused fires, in other words. Theaters also began using electric light bulbs -- perhaps the first was the Bijou Theatre in Boston, which electrified in December of 1882. Cities began installing electric lights in their streets.
What minerals are used to make light bulbs?
Light bulbs are comprised of a number of nonmetallic minerals and metallic minerals, as well as various other periodic gases and nonmineral materials. Many of these minerals are found in abundance in nature and in the human body. Most minerals must be mined from rock or from the earth's soil. Minerals are used in light bulbs to make the glass, the mechanism that allows it to light and the fuel to generate the electricity.
1. Copper
o Copper is a metallic mineral substance, and is used in the production of electric light bulbs because it conducts electricity very well. Copper,along with nickel, is used to make the wires that lead into the main body of the bulb. These wires carry electricity from an electric source to the area that emits light, called the filament. Copper must be mined, and is found in nature in several different forms, such as azurite, malachite and cuprite.
Aluminum
o Aluminum is a metallic mineral found in abundance in the earth's crust, and according Georgia State University's Department of Physics and Astronomy, aluminum is the third most abundant element found on earth. Aluminum is refined from bauxite ore, and is a good conductor of electricity. Aluminum is used to create the heat deflector in the light bulb so that hot gases do not build up and break the bulb.
Nickel
o Nickel is a metallic white mineral used in light bulbs, because it does not corrode. Also, when mixed with iron, nickel creates an alloy that is used to make the inner stem wiring of the bulb. Nickel is used, along with manganese and copper, to make the fuse of the light bulb. A nickel-copper alloy is also used to make some of the light bulb's electrical wiring.
Molybdenum
o Molybdenum is used to make the support wires for the filament in light bulbs. Molybdenum is a metallic mineral that occurs naturally in the earth's crust and in the oceans. It is very hard and because of this, it is used in tool-steel alloys. Molybdenum is also used in light bulbs because it does not melt easily. Molybdenum is usually found with other minerals in powellite and wulfenite.
Trona
o Trona, also known as soda ash, is an evaporite mineral. This means the mineral forms as the result of evaporated water or liquid or through the process of erosion from rock. Along with salt, lime and coal, trona is used to make the glass bulb of the light bulb. Trona is sodium carbonate, and is found in bodies of water that contain soda brine. Trona byproducts include baking soda, some preservatives and some detergents and soaps.
How many 100 watt bulbs would equal brightness of the sun?
Because more energy goes through it, you pay more and you get more result.
AnswerA 100-W lamp has a lower operating resistance than a 40-W lamp. Since power is equal to the voltage squared divided by the resistance, for a given voltage the power will be higher and its operating temperature (therefore brightness) will be higher.
What are the advantages and disadvantages of using compact fluorescent light bulbs?
One nice thing about light bulbs is that they provide light indoors and when it is dark outside, without having to light a candle or an oil lamp. They are also relatively safe, clean and easy to operate.
Disadvantages include the fact that you will need electricity and wires that are properly installed and cannot be easily moved about. It is also difficult to repair a broken light bulb or one that has burned out, and they must be disposed of and replaced.
because one battery distributes an even amount of power. the only way that both of the light bulbs with two batteries will stay the same brightness is if the batteries ans light bulbs are in a parallel circuit. then the power is distributed evenly between the light bulbs. If the lighbulbs are in a simple circuit then the first lightbulb (in a positive to negative direction) will be brighter because it uses up more energy before it can get to the second light.
What happens when you break fluorescent bulbs?
You create dangerous glass shards and release the chemicals inside the bulb. These include phosphorous but more importantly a small amount of mercury which is a dangerous bio-hazard and pollutant. you should dispose of used fluorescent bulbs safely in a recycling facility which will recover the mercury.
What is filament of light bulb made of?
Filament of bulb is made up of Tungsten.
perfect answer:filament of bulb made of tungsten because of its melting point tungsten s m.p. is 3422 c and it produces through a method called extrusion process and due to its high melting point it do not melt due to heat. thnx if any1 have some general knowledge plz send me at wanted_rk2000@yahoo.comTungsten.
Where can CFL light bulbs be purchased?
You can buy an MR16 compact fluorescent bulb with bi-pin base in either 35 or 50 watt (claimed) equivalent at Home Depot.
Feit Electric is the manufacturer and the bulb I bought to experiment with fell short of the claimed rating- there's no way that this 50 watt equivalent was even close to much more than a 20 watt. It was disappointing. I tried 3 of them in my bathroom to replace 3 50W halogens and it was pitifully dim... [Edit: Svartalf] I'm not at all surprised. Many of the vendors play fast and loose with the "effective" ratings. Some get closer than others, but in the end, they all fall short. Most of the "35 watt equivalent" LED and CFL answers are closer to 20 watt halogens from the bottom end of "close". I don't buy the bulk of the claims of 40 watt equivalents in the LED space. Some of them get in the ballpark, but pretty much none of the non-custom answers in the MR-16 space are honestly in the league of what they've been claimed to be. [Edit: smatda]
Stay away. I purchased 3 of these from Home Depot. Two failed within 30 minutes. I took them back and exchanged them. One of the two new ones failed as well. And one of the original bulbs failed after a month. So out of 5 bulbs, 2 have actually lasted beyond 30 minutes, and only one has lasted over a month. None have lasted over two months with very light usage (maybe 15 hours a week???) I took a hacksaw and did an "autopsy" of one of the bulbs...it showed a massive transistor and capacitor failure (components were destroyed on the printed circuit board).
When did light bulbs begin to appear?
Manufactuering and distribution of fluorescent light bulbs and fixtures began in popularity soon after the [[1939 World's Fair]] where it was first introduced to the general public, between about 1940 to 1968.
Can you use a 12 volt LED light bulb in a 120 volt light bulb socket?
Yes, as long as it has a filament for producing light for example a Tungsten Halogen Lamp, normal Incandescent or GLS lamp. If the lamp is rated at 12v it will run on either 12vac or 12vdc.
How long does incandescent bulbs last?
LED bulbs are said to last between 30,000 and 50,000 hours. Incandescent has about a 2,000 hour life span and approximately 8,000 for a "CFL" type.
Hope this helps everyone on making a decision.
IE - Energy Solutions
What is the air filled in to a bulb?
Oxygen can rapidly oxidize metals and other materials in the presence of heat, so it is not compatible with the heated filaments or ionized gases within a light bulb.
The development of partial vacuums and use of inert gases (mostly nitrogen) allowed early light bulb filaments to become hot enough to glow without being burned up. Because metals conduct current better than their oxides, oxidation of filaments and conductors is also avoided.
