how to make a rainbow flame?
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Like this?\nhttp://www.webelements.com/webelements/elements/media/pics/rainbow.jpg\n\nTo quote the web site,\n"The picture above shows the result of adding different metal salts to a burning reaction mixture of potassium chlorate and sucrose. The red colour originates from strontium sulphate. The orange/yellow colour originates from sodium chloride. The green colour originates from barium chlorate. The blue colour originates from copper (I) chloride. The lilac colour that should be evident from the potassium chlorate is washed out by the other colours, all of which are more intense."\n\nBasically, certain salts will color the flames various colors due to how the electrons are excited (more complicated than that, look into spectroscopy).
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Add some baking soda first and then pour on some vinegar. You will observe some bubble forming and the bublbles will rise very quickly. If you want to make fire instead, add some glycerine to potassium permagnate. Be very careful if you want to do this.
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There is no gold at the end of a rainbow.\n\n\nThe traditional description of the rainbow is that it is made up of seven colors - red, orange, yellow, green, blue, indigo, and violet. Actually, the rainbow is a whole continuum of colors from red to violet and even beyond the colors that the eye can see.\nThe colors of the rainbow arise from two basic facts:\n\nSunlight is made up of the whole range of colors that the eye can detect. The range of sunlight colors, when combined, looks white to the eye. This property of sunlight was first demonstrated by Sir Isaac Newton in 1666.\nLight of different colors is refracted by different amounts when it passes from one medium (air, for example) into another (water or glass, for example).\nDescartes and Willebrord Snell had determined how a ray of light is bent, or refracted, as it traverses regions of different densities, such as air and water. When the light paths through a raindrop are traced for red and blue light, one finds that the angle of deviation is different for the two colors because blue light is bent or refracted more than is the red
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Use chicken wire to make a volcano like thing, then cover it with plaster. paint it and add trees and stuff like that. then mix vinegar, red dye and baking soda together to make the lava.
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Place a reddish orange candle in a Hurricane vase and place the vase in the center of an autumn leaf wreath.  Use a round mirror on the bottom which will reflect the candlelight. \n\nFor Hurricane vases check out this site:\nhttp://www.save-on-crafts.com/hurricane.html
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Corel Draw will let you fill Artistic Text using the custom color option and will give you a rainbow effect on any font you select.\n\nwww.brightstarlinks.com
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burn the place down, then nail yourself to a cartwheel and jump over a rainbow
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make a mini lava-lamp-like thingy.  get a cup, fill it about 3/4 full.  add food coloring, if u want.  pour a layer of oil about a centimeter thick.  then, pour salt, sugar, or sand, or all three on top of the oil.  it'll go up and down for a while, then the solid will settle at the bottom and the oil float stay on top.
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because all a flame is is particles of whatever is burning giving off energy in the form of electrmagnetic radiation, namely light. Different compounds and elements give off different wavelengths of light when heated hence the color of the flame.
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Take off the metal cover and lift up the small tab that you have to push, so that it doesn't turn the little wheel, and turn the tab all the way to the left. Place it down, so that it meshes with the circle and turn it to the right. Repeat until desired flame is achieved.
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Well I could make it as complex and confusing as some but I will keep it simple.  The color of a flame is determined by the material that is burning. The color also denotes temperature of a flame. (yes there are different degrees of hot). Sodium will give a yellow flame. Have a gas stove? Notice the flame has two colors of blue, the inner flame is a different shade than the outer shade, look at a match, the flame closest to the center of flame is yellowish while the outer is reddish. The center is hotter in both flames.\nAdding a chemical to the fire will change color, copper will burn blue, both from chemical and its flame hotter than the average yellow fire.  The quantity of flame or size is why we cant tell the difference in heat from all these small flames and we say they are hot.
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try the flame thrower
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Well, what color is fire?\n\nIt's a combination of red, yellow, and orange...\n\nIf you just want to make a regular "normal" sun instead of getting technical about it... Yellow. (Maybe with some orange shading!)
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What makes the bow?\nA question like this calls for a proper physical answer. We will discuss the formation of a rainbow by raindrops. It is a problem in optics that was first clearly discussed by Rene Descartes in 1637. An interesting historical account of this is to be found in Carl Boyer's book, The Rainbow From Myth to Mathematics. Descartes simplified the study of the rainbow by reducing it to a study of one water droplet and how it interacts with light falling upon it. \nHe writes:"Considering that this bow appears not only in the sky, but also in the air near us, whenever there are drops of water illuminated by the sun, as we can see in certain fountains, I readily decided that it arose only from the way in which the rays of light act on these drops and pass from them to our eyes. Further, knowing that the drops are round, as has been formerly proved, and seeing that whether they are larger or smaller, the appearance of the bow is not changed in any way, I had the idea of making a very large one, so that I could examine it better. \n\nDescarte describes how he held up a large sphere in the sunlight and looked at the sunlight reflected in it. He wrote "I found that if the sunlight came, for example, from the part of the sky which is marked AFZ  \n\nand my eye was at the point E, when I put the globe in position BCD, its part D appeared all red, and much more brilliant than the rest of it; and that whether I approached it or receded from it, or put it on my right or my left, or even turned it round about my head, provided that the line DE always made an angle of about forty-two degrees with the line EM, which we are to think of as drawn from the center of the sun to the eye, the part D appeared always similarly red; but that as soon as I made this angle DEM even a little larger, the red color disappeared; and if I made the angle a little smaller, the color did not disappear all at once, but divided itself first as if into two parts, less brilliant, and in which I could see yellow, blue, and other colors ... When I examined more particularly, in the globe BCD, what it was which made the part D appear red, I found that it was the rays of the sun which, coming from A to B, bend on entering the water at the point B, and to pass to C, where they are reflected to D, and bending there again as they pass out of the water, proceed to the point ". \n\nThis quotation illustrates how the shape of the rainbow is explained. To simplify the analysis, consider the path of a ray of monochromatic light through a single spherical raindrop. Imagine how light is refracted as it enters the raindrop, then how it is reflected by the internal, curved, mirror-like surface of the raindrop, and finally how it is refracted as it emerges from the drop. If we then apply the results for a single raindrop to a whole collection of raindrops in the sky, we can visualize the shape of the bow. \n\nThe traditional diagram to illustrate this is shown here as adapted from Humphreys, Physics of the Air.  It represents the path of one light ray incident on a water droplet from the direction SA. As the light beam enters the surface of the drop at A, it is bent (refracted) a little and strikes the inside wall of the drop at B, where it is reflected back to C. As it emerges from the drop it is refracted (bent) again into the direction CE. The angle D represents a measure of the deviation of the emergent ray from its original direction. Descartes calculated this deviation for a ray of red light to be about 180 - 42 or 138 degrees. \n\nThe ray drawn here is significant because it represents the ray that has the smallest angle of deviation of all the rays incident upon the raindrop. It is called the Descarte or rainbow ray and much of the sunlight as it is refracted and reflected through the raindrop is focused along this ray. Thus the reflected light is diffuse and weaker except near the direction of this rainbow ray. It is this concentration of ray
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Homemade Glue\n1/2 cup flour\nwater \n\nAdd cold water to 1/2 cup flour until a thick cream forms. Simmer on stove 5 minutes. Add food coloring or flavoring if desired. Takes a while to dry.
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Iron will generally give a dark red flame caused by the excitation of the electrons in the iron atoms.\nOther common colors produced by other elements include:\nRed color= Lithium compounds such as lithium oxide,strontium compounds and calcium compounds.\nYellow color= any sodium compounds e.g sodium hydroxide or sodium carbonate\nGreen color=Barium, molybdenum, boron, thallium, phosphorus, tellurium, lead, antimony, or zinc compounds.\nBlue color=Copper, indium or arsenic componds.\nPurple color=Potassium, rubidium, or cesium compounds
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A rainbow is created when white light from the sun enters droplets of water in the sky and is refracted. The light is refracted when entering spherical droplets, then it is reflected inside them and refracted again upon leaving. This bends the light, as you would see in a lens.  The red end of the spectrum bends less than the blue, which is why they separate when they come out of the drop.\nWikipedia has a page about rainbows, with some diagrams which may help you understand.\nhttp://en.wikipedia.org/wiki/Rainbow