How do TV's create white light when their 3 projected colors are blue, green & red?
148018
Red, blue, and yellow are the primary colors of PAINT; the primary colors of LIGHT are red, blue, and GREEN.  Combining all of the primary colors of light gives you white light.  Black (darkness) is simply the absence of all color.
806385
This is additive color mixing.  the interference pattern of the wavelengths of the two colors blend together to create yellow. You get yellow on your television or computer monitor the same way.  If you look at an area of yellow you will see that only the red and green dots are illuminated; the blue ones are dark.  Red, green and blue all at 100% result in white.  Green and blue yields cyan, and red and blue gives magenta.  If the red, green, and blue are all at 0% you have black.  This only works with transmitted light.  If you print the colors on paper you have subtractive color mixing and get totally different results.  The blending of colored light is called RGB color (Red, Green, Blue), and the optical mixing of printing colors is called CMYK (Cyan, Magenta, Yellow, and blacK.\n\nIf you shine green and red light on a blue object it will appear black, because there is no blue in the transmitted light to be reflected back..  You have to use pure color for this.  Rotate the hue slightly and the situation changes.\n\nI do computer animation and mess with this stuff all the time.\n\nI'm better than wikipedia: see below.
335985
Hi there,\n\nTemperature vs colour goes red, orange, yellow, green, blue, violet. It is simply the spectrum of light (think rainbow) because that is what it is based on.\n\nSo red light is actually the coolest, and as you go up the temperature scale, you run through the spectrum to violet.\n\nWhite light is a combination of ALL the different colours of light, so something which glows white hot is just releasing all different levels of energy, so it appears white. So in actual fact, blue (or more accurately violet) is hotter, because if something is blue hot, then it is releasing ALL really high levels of energy, but you rarely get anything which is completely blue hot - there is almost always some sort of mixture, and usually, the object glows white tinged with blue (which just means that the object is releasing all different levels of energy, but predominantly or mostly blue!)\n\nJust for your interest, the way this works is, when you heat something up, you are exposing it to invisible energy called "infra red" which is just heat. So when you touch something and it feels hot, you are simply sensing infra red energy!\nThis energy is "weaker" than light (so light is actually more energetic than heat), but if you let an object get hot enough, it stops being able to release the heat as just infra red and starts to release it as visible light. The hotter the object gets, the further along the spectrum is the light emitted.\nActually, if the object absorbs enough energy it will start to release Ultra Violet (UV) and X-Rays!
237515
Two supplementary colours give together the impression of white. Use a magnifying glass on your coloured t.v. screen and look at white places.
526205
Plasma technology differs from other display systems in as much as here in each pixel a source of light is produced. Between the flat glass panels loaded electrodes cause tiny explosions of xenon gas, which cause an ultraviolet light radiation, which for its part produces red, green and blue phosphorus light at the screen back. \n\nContrary to the conventional cathode ray tubes, with which a picture is divided into a rapid succession by pixels on the screen, all plasma display pixels become at the same time "illuminate". Therefore the plasma picture develops spontaneously and is extremely sharp. It extends evenly into all corners of the screen - whole without distortion or flares.\n\nAstonishing colors\n\nThe plasma technology ensures a brilliant, sharp image quality of unbelievable clarity by 256 gray tones and altogether 16.7 million colors.\n\nPrecise image quality\n\nOwing to the fact that in the case of the plasma display brightness, color and contrast of each individual screen pixel are stopped, it does not develop brightness differences between the center of the screen and the boundary regions. In addition the square pixels provide for an absolutely precise image replication, freely from the distortions which one at the edges of cathode ray tubes you have to consider with.\n\n160-Grad viewing angle \n\nFlat plasma panels offer opposite shining crystal displays (LCD) and screens with rear-projection a substantial advantage, if as the phosphorus-coated screen surface and the picture is stimulated directly is not projected on it.\n\nTherefore the plasma technology can obtain an unusually broad viewing angle - both in vertical and in horizontal direction. This makes a clearer view for a larger spectator number possible on the screen.\n\nNo magnetic disturbances \n\nDifferently than cathode ray tubes plasma displays do not shoot electrons at the screen and therefore also by the proximity of magnetic fields are not disturbed. That means that plasma panels can be set up problem-free in the proximity of loudspeakers or other strong magnetic sources, without thereby picture distortions or disturbances in the color equilibrium are caused.\n\nMultimedia flexibility\n\nPlasma displays support variety of sceen sizes and work both with Pal and with NTSC video format. Many plasma support additionally also SECAM and HDTV. All displays support multimedia-applications and offer a RS232-Terminal, so that the user can switch problem-free between input signals from different sources. Multi lnput terminals permit even the announcement of divided pictures* on only one plasma display.
331197
Because the different monitors interpret colors differently.
199551
well nwhen white light goes through a prisdim, it breaks and turns into the colors of the rainbow. so when white light goes through the atmosphere, which acts like a prism, it breaks and we mostly see the blue
682090
Television projects a laser beam, onr of three colors, in patterns, displaying images.
1046084
TVs use cathode ray tubes to provide the picture, they need time to "warm up" before you can see the picture.  The speakers that relay the sound though are basically instantaneous.
317548
You are confusing emissive mixing with subtractive mixing. When dealing with pigments, one customarily uses the colors Cyan, Magenta, and Yellow as primary colors. This is because you are actually dealing with a subtractive spectrum. The colors of the pigments are the part of the spectrum that is not absorbed by the material, so mixing them is not an additive procedure, but a subtractive procedure. Mixing all of the three colors above will not get you white, but (in a perfect world) will subtract every color from being reflected, giving you black, the absence of photons. In the real world, the pigments are imperfect and you actually get a murky dark greenish color, which is why an independent black ink is added to printing processes (CMYK).\nRed, Green and Blue are primary for the emissive spectrum, these are used for mixing colors of pure light (ie., CRTs and LCDs). Mixing all of these colors (use red, green, and blue filters in front of white lights) will get you white, as it should. See the article below for more detail.
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The best way to learn is by doing, And it is a difficult concept to understand that light can be broken.\n\nI would reccommend that you use prisms to break up the light into spectrums. you can use chandelier crystals or something like that.\n\nThen you can have them put the light back together: Heres how: get three slide projectors, and get some colored acetate in cyan (turquoise). magenta, and yellow to place in front of the projection lenses OR Better Yet take slides of peices of paper that are these colors and place one in each of the slide projectors. If you angle the projectors so that the projections overlap, it should form white light.
12251
The scientific answer is very long which involves dipole scattering, charged particles vector potential and much more.  There is a simple answer though.  Think of how prism works.  When a light hits the prism, what happens?  The answer is the prism breaks the white light into visible color, red, orange, yellow, green, blue, and violet (these are the rainbow color).  Our atmosphere is filled with dust particles.  So when sun ray hits the particles in the atmosphere, it breaks the white light like the prism.  The color blue has the strongest wavelength out the rainbow colors.  Therefore, it effects more than the red and green wavelength, causing the surrounding air to appear blue.  But during the sunset, the sun light passes farther through the atmosphere causing them to deflect and decrease the blue color. So sunset appear to be red.
64730
That really is a fun and interesting question!!!\n\nOur cones are not necessarily identical, which means that out perceptible gamut will not map identically on the xy plane. (Click on the link from Discover Labs listed below for pictorial examples of these differences, for example in color blindness) \n\nHowever the difference for most of us is so insignificant that it doesn't matter. \n\nThat is what professionals like photographers, artists and cinematographers, etc. base their success in their professions on. Also remember that colors are not arbitrary but are determined by their wavelengths. There may be some other issues on a quantum level, More...\n\nYou'll find some fun, interesting and easy to understand theory in addition to great explanatory  illustrations here at this link:\n\nhttp://www.discover.uottawa.ca/~aelsawah/csi4133/Lab02.htm
354651
Well the white light is a mixture of a large number of wavelengths of lights. These different wavelengths of lights travell at different speed in the medium such as glass. In air and vacuum the have alsmost the same speed. But in prism the travell with t&#92;different speeds. So when the pass prism the length of path travelled in the same times is different and hence when the emerge out, the different colrs are at differemt positions resulting in a seperation of colours.\n    This is called the dispersion of light.
448202
If you shine a white light through a prism, the light is refracted and you get a rainbow. Thats how you can see the different wavelengths in white light.
475042
Incandescent bulbs are yellowish becuase they are not really that efficient in generating white light, they are better at generating heat. The bulb lights up becuase of the heat of light and as it gets hotter it goes through the electromagnetic spectrum: purple-blue to greennish yellow, red-orange and then white. However as incandescents wear out they dont produce white light anymore and produce yellowish light.
1020692
Sunlight is known as white light. Whit light is made up of seven different colored lights: Red, orange, yellow, green, blue, indigo and violet. When a ray of white light passes through a prism, it breaks into its components. This happens because all the seven colored lights have different wavelenghts and slightly diferent travelling speeds. A water droplet acts like a prism and refracts/divides white light into its seven componenets resulting in a rainbow.