Question about the rainbow?
611374
Excellent point.  Probably just to make themselves appear better/different/not bad. Like adopting a logo.  Trying to present a better picture of themselves.
661147
This is EARTH SCIENCE, not religion...:(\n\nA rainbow appears from refraction (not reflection) of sunlight through water in the atmosphere.  The circumstances for us seeing them usually happen around sunrise and sunset, since the refraction occurs in a circle around the source of light (the sun), only half of which is visible since the other half would be on the ground.  When the sun is higher in the sky, that same circular angle around the light source puts the whole thing on the same plane as the ground.  \nIt's simple refraction of light, simple physics -- doesn't have anything to do with god.
125458
Well I think they appear as lines; fat, multicolored, curved lines.  But they aren't really "there" where we see them.  That is, other people, say a mile away from you, will see the rainbow shifted from where you see it, and that's because the rainbow's apparent direction is relative to the sun's rays that are near you.  But is this the answer to your question?  Are you asking why they're not thin? straight?  Give us something, Bea.
157694
Your perspective to the event, it is so large and you can only stand in on place at a time.  Hence why you can never find the end of the rainbow.
129313
The curvature of the rainbow is a consequence of having only those raindrops that are at the vertices of 42 degree angles between you and the sun. The collection of all these raindrops is of course an arc. \n\nThe light enters the raindrop from behind you, and bounces off its back surface. The colors separate, because each color has a different speed in the water, and therefore refract a different amount.
436348
A rainbow is seen when the Sun is behind you and water is in the air in front of you. You can make one with a water hose or maybe see one in the air with rain in the area. Natural rainbows appear very large and several miles away. The top is all you can see because the ground in front of you blocks the lower portion of the rainbow. However, when seen from an airplane, rainbows are complete circles.
371665
Well.. you say white light it's not refracted by glass... Then if that's true, there shouldn't be a rainbow EVER, no?\nThat's the point, white light it's composed by several colors, that's why it's white. When it goes through a glass, it WILL be refracted, causing it to separate into different spectres of light. Of course, only a minimal part of it will be refracted, for those glasses are constructed in such a way to prevent it from doing so.
720005
1. 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.\n2. you can see a rainbow anywhere there is water around and you have the sun to your back.\n3.Sir Isaac Newton in his early physics experiments decided the colors of the rainbow
1036257
Double Rainbows are stunning!\n\nThe phenomenon is basically a main primary rainbow with a secondary rainbow that forms outside the primary bow. The secondary bow is weaker in brightness than the primary (it forms from a second reflection in raindrops, rather than from just one as with the primary bow), and its colors are reversed in order. In the primary bow, blue is on the inner edge with red on the outer. In the secondary bow, the red is on the inner edge and blue the outer. In between the two bows you will see a much darker region known as Alexander's dark band. The center of the rainbow is usually much brighter than the rest of the sky due to sunlight reflecting directly back from the droplets to the viewer...\n\n\nThere's a lot on this topic available from a Google search :)
122346
Why don't you search the answers to the previously posted questions here on this topic? This has been asked over and over. \n\nHere is a little bit to get you started:\n\nRainbows are caused because the different colors in white light are bent by different amounts in rain drops, so the colors get separated. The sun shines from behind the observer, and then bounces off the back surface of the raindrops, and those raindrops that are at the required position for light to reach the observer from the sun contribute to the rainbow. This arc is formed by the collection of raindrops which are at the vertices of angles of 42 degrees between the observer and the sun.
529953
It has to do with the angles of refraction.  Rainbows are formed when you have the sun behind you and the sun is hitting a group of water droplets in the direction of the rainbow.\n\nThe light from the sun hits a droplet, bounces around and comes back out toward you at an angle of around 42 degrees (technically between 40 and 42 depending on the color).  In fact it is hitting lots of droplets and rays are bouncing in all sorts of directions, but only the ones that bounce toward *your* eyes are the ones you see.  It turns out that you see all drops that are 42 degrees from your viewing point.  That would be 42 degrees up, 42 degrees left, 42 degrees right, 42 degrees up and left, etc.  If you think about connecting all those points, it forms an arc, not a straight line.  An illustration is included in the 1st link below.\n\nIf you are in an airplane, you can actually see a full circle but because we are usually on the ground, you can't see the bottom of the circle.  Tale a look at the 2nd link.\n\nFinally, if you look closely at a rainbow in a sprinkler, you *will* notice an arc.  It may be a much smaller portion of the circle (since you have a small sprinkler compared to a large bank of rain droplets), but you should see the bend.  And example is in the 3rd image link.\n\nAnyway, the arc of a rainbow has nothing to do with curvature of the earth or a "cylinder" of light.  It's all in the angle of refraction in the light rays.
238996
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
1156057
The arc is what YOU see. the truth is that it is a complete circle obscured by the horizon. The colors are not created by the raindrops (moisture droplets would be more accurate) but by the angle the light is shining through them. it is a relative thing as well meaning the view or lack of depends on your perspective. No matter how scientifically I describe this; a rainbow is an amazing thing and I hope you enjoy every one you see!
757297
Is there really an end to the rainbow?  If there is...is it gold or skittles?
424597
Rainbows are caused when sunlight is bent as it passes through raindrops.  Different wavelengths of light (different colors) bend at slightly different angles, which separates the white light into its different colors.  Because there is a specific angle that each color bends, these colors will always be at a specific distance from the sun.  Next time you see a rainbow, you can notice that the sun is either at the center of the rainbow, or else the rainbow is centered at a point directly opposite the sun in the sky.
270700
much to many people's belief's 7 basic colors aren't based on the rainbow colors. in fact some of the colors on the rainbow is actually a mix of primary colors that are really secondary or tetiary. not primary [basic]. so... here we go...\n\n\n7 basic colors are:\n\n1- a cool yellow a.k.a Hansa Yellow Medium—a lemony, slight bias to blue-green;\n\n2- a warm yellow a.k.a New Gamboge— a golden, slight bias to red-orange;\n\n3- a cool blue a.k.a Phthalo Blue (GS)—an icy, slight bias to blue-green;\n\n4- a warm blue a.k.a French Ultramarine— a purplish blue, slight bias to violet;\n\n5-  a cool red a.k.a Quinacridone Rose—a rosy, slight bias to red-violet;\n\n6- a warm red a.k.a Pyrrol Orange—a tomatoey red, slight bias to red-orange;\n\nok..only six [6] are listed here. to get the 7th color,all u need to do is... well here's where the magic is....\n\na] Use a warm and a cool of each primary hue (a warm red and a cool red; a warm yellow and a cool yellow; a warm blue and a cool blue) to mix bright, high-inten sity secondary called a Mixed Primary Hue. The secret is in using the right split primary colors and not crossing over the lines into another section!\n\n++TIPS++\n\nTo mix the oranges, mix the red and yellow within the lines to the left of the circle. First mix orange, and then add more yellow for yellow-or ange and more red for red-orange. \nTo mix the greens, mix the blue and yellow within the lines to the right of the circle. First mix green, and then add more yellow for yellow-green and more blue for blue-green. \nTo mix the purples or violets, mix the pink or rose with the blue within the lines at the bottom of the circle. First mix purple , and then add more blue for blue-violet and red for red-violet. \n\nNow here's the rule that makes this work: 'When mixing two colors on the wheel to achieve high- intensity color, don't cross over the line-stay in each section. Just imagine, no more muddy colors!\n\nCrossing over the lines and mixing the colors on either side of the line causes the mixtures to become less intense and slightly grayer. Cross two lines and even more graying occurs. This graying is called neutralizing. It is the result of a slight touch of that third color being added to the mix. To mix earth colors, you simply cross over the lines or add a warm neutral to your mixtures.\n\nOK ...\n\nNow for the much awaited 7th basic color....\n\nThat's where Quinacridone Burnt Orange—the seventh color of our essential 7 basics-enters the scene… it's a versatile warm neutral.\n\n\nhehe. quite interesting. hmm. [^_^]
773813
Rainbows don't exist.  What you can see is the light from the sun (behind you) relected and refracted by raindrops.  You can't go there - what you see would move with you.\n\nYou can only see a rainbow where there are raindrops.  It seems to end where it touches the ground, but that's because there aren't any raindrops down there.  If you could get high enough, you would be able to see the whole circle - so there's no end.