How does a Tube light (fluorescent light) works?
441497
mercury vapor in the tube is subject to electricity which causes it to ionize.  ionization is the electrons jumping away from the atom and the returning. elecricity provides this "jump" and the energy is then released upon returning to the atom.  this release is in the form of ultraviolet rays which when they hit a "fluorescent" coating on the inside of the tube causes it to glow ( voila ! tube light )
180630
I am a certified electrican btw.  A ballast in a flourescent light fixture provides the right voltage supply to the flourescent light tube.  The ballast is basically a step up - or step down transformer, which means just an increase or decrease in voltage to the lighting tube.  The ballast also controlles the voltage/power from the actual power supply from the building, beacuse this power can fluxuate up and down, and/or have a very messy sign-wave.  The volage must stay in a certin small limit range for the light to work properly.  Ballast are getting better for the quaility of light they put ie, colour, less flicker.  And they are also now more power efficent - ballast with a T8 marking on them are the newer kind, old T5's can be very hot to the touch and could also contain PCB's with are harmfull to your health.  Contact an electrian if you find an old ballast that is leaking , that does not have the saying "PCB free, or doesnot contain PCB's.  LOL this is prolly more then you asked for but here it is anyway.  And if this isnt enough here is an intesnse explination of a ballast \nhttp://home.howstuffworks.com/framed.htm?parent=question337.htm&url=http://www.thekrib.com/Lights/fluor-tech.html
862074
If I understand you question correctly, you are putting in a retrofit fluourescent bulb into a standard lamp with a 3 setting light switch.\n\nYou are probably using power on setting #1, but there is not enough power to have the ballast convert the voltage and ignite the gas in the bulb.  But it is probably using energy constantly trying to light the bulb.  \n\nIt is a different principle than an incandescent bulb where no light = no heat = no power.\n\nI am not a total expert on the retrofit bulbs, but I would say if it is humming and the base above the socket warms up, it is using power.
456133
tubes within the other tubes. They're pinched close at the sides, with small openings at the mout of the tube of tooth paset, so when you squeeze it all three colours come out, with two of them striping the main colour
309604
NO.  When the lightbulb burns out the filament breaks.  The filament is what the electricity flows through to create light.  When this breaks there is no path for current to flow, therfore no electricity is used.
790269
Touch lamps work off of capacitance sensing.  when you touch it with your body you add capacitance (the ability to store electrical energy) to the circuit.  If you touched it with a metal rod it would work, wood.. nope.. plastic.. nope.. needs to be something conductive
238552
When subject to electric discharge in a vacuum tube, neon glows reddish-orange.  While neon is used as a generic term for glowing signs, other gasses are used to create colors other than red-orange.\n\nNeon can also be used in fluorescent black lights but the black-light effect is caused by the clear (or frosted) glass of the fluorescent tube being replaced with a Wood's glass, a nickel oxide, cobalt oxide-doped glass that blocks all light waves except for the ultra-violet spectrum.
583753
The tubelight has greater surface area compared to bulb and hence seems brighter.  The bulb has a incandescent filament glow which casts darker shadow as compared to fluoroscent glow of tube light.  For this reason it is said that fluorescent lights are really more efficient than normal light bulbs\n\nCheck it out for yourself at :--
41971
Cf graph below, lm/W for lighting sources varies between 1 /m/W for candles and over 100 lm/W for modern fluorescent lighting solutions.\n\nIncandescent lamps are around 10 lm/W, i.e. we can get up to 10 times more lm per Watt with other solutions.
497011
It works by having little mirror slices at different angles. As light is reflected off the orb, the little slices separates the light into several colours briefly and the process is repeated.
256612
what kind of lights? if it is a incandescent bulbs/lamps it can be controlled through an electronic sequencer, you can buy it at any electronic shops near you... if it is a flourescent light, the light might be damaged by using sequencer... if it is metal halide lamps use dimmer instead...
928685
An electric INCANDSCENT bulb uses a tungstene filament (twisted wire) that is heated by the current passing through to several hundred degrees.  It is this heat that heats the glass.  It is also the proof of inefficiency of the bulb, because it is transforming 80% of the energy it receives into heat, giving only 20% for light!\nIn the FLUORESCENT tubes, the light is produced by the ionisation of the internal gas (neon or argon).  This ionisation is initiated by heating two small filaments at teach end of the tube, that heat up a small drop of mercury.  Once the mercury is vaporised inside the tube, the "starter" opens, creating a high voltage puls across the whole tube, ionising the gas that then becomes conductor: a small current passes through the gas, and the filaments are disconnected.  Since the ionised and conductive gas has nearly no resistance, the current is limited by the "ballast" (an inductor inserted in series).\nSince the CURRENT is limited, there is no "Joule Effect" (heating) and the tube stays pretty cool.\nTheir efficiency is about 100 times more than a bulb... (in terms of power/light ratio).
87397
As I understand it-- the electricity agitates the electrons of the gas- the color is from the color the maker coats the inside of the tube with.
203053
If you are using a CRT type monitor as opposed to a flat screen LCD it is not suprising. The CRT is a cathode ray tube it is one of the few tubes still in use in electronics today. the way all tubes work is as follows. there are (3) elements to the tube; The cathode, the anode and the control grid. In all tubes the cathode is a filament much like in a light bulb. It heats up and electrons are "boiled off" of its surface. The anode is positively charged and attracts the electrons. the voltage placed on the control grid(s) determine the current flow from cathode to anode. In a CRT you have 3 cathodes with controll grids called electron guns which produce a thin beam of electrons. A magnetic yoke around the base of the tube moves the beams horizontaly and vertically to scan across the anode. There is one gun for red another for green and another for blue hence RGB. The anode is at a very high potential, about 32,000 volts DC. This can shock you although it is usually not very dangerous as the current supply is low.
1026089
1) the rheostat (that little knob that increases or decreases the light coming from the light source)\n\n2) the iris diaphram (works like the iris of the eye, making bigger or smaller circles for the light to pass through)--this is usually part of the condenser
703428
It used to be like that with fluorescent lights only, but not anymore.  See this article.\n\nhttp://www.eweb.org/business/energy/energysmart/ebd/9811/lighting_myth.htm
393843
b/c a constant amt. of electricity is going into it, and it will only get brighter if you add more electricity to it, or get a brighter bulb!