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Why does a rainbow appear bent or arched in a semicircle in the sky?
Rainbows Rainbows have been the subject of songs and poems, stories and mythology, but there is an explanation as to why rainbows appear as they do. Rainbows are light and you can't touch them. The sun must be shining and must be behind you, and there must be water droplets in the air in front of you. Sunlight shines into the water drops which act as tiny prisms that bend or "refract" the light and separate it into colors. Rays of a rainbow bend twice. As they enter the drops, the rays are bent, then they reflect off the back of the drops and bend again as they exit out the front of the drops. The rainbow is circular because when a raindrop bends light, the light exits the raindrop at a 40-42 degree angle away from the angle it entered the raindrop. The violets and blues bend at a 40 degree angle, and the oranges and reds bend at a 42 degree angle. Light can also enter droplet, be reflected off the back of the droplet, only to be reflected of the front, and then off the back again before leaving. It is bent at each phase in this process, and a second rainbow can appear above the first one. In a double rainbow, the second rainbow will appear where it does because the light will be cumulatively bent some 50 to 53 degrees. This gives it its position "outside" the primary rainbow. Also, the colors will be inverted in this bow. Rainbows don't have "ends" but are full circled, but we can't see this because the horizon of the earth is in the way. If the sun is very low in the sky, either just before sunset or just after sunrise, we can see a half circle. The higher the sun is in the sky, the less we see of the rainbow. The only way to see the full circle of a rainbow in the sky is to be above the ground and have the sun behind you. You would have to look out on the drops from an airplane to see a circular rainbow. Now, this is quite complex, so it's possible you might get away with the old standard, "There is gold at the end of the rainbow and that's what makes the colors." Be sure that you watch your 6-year old closely as he/she might decide to pack his/her bags and go hunting for that bag of gold! Another way you may get away with explaining this off is buying a "prism" (it's a glass drop) and hanging it in a sunny window. It will reflect beautiful spots of light in the room and the effects are quite pleasant to study. Another way to view a full rainbow without leaving the ground is using a garden hose. Have it spray water in bright sunlight with the sun behind you and the spray in front of you. If the entire circle is not visible you can move the hose around to see the rest of the circle. The ones seen from airplanes are more spectacular, though.
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Rainbows are caused by sunlight glinting off tiny water particles in the sky, bouncing the light back towards the observer. In other words, any time you see a rainbow directly… in front of you, the Sun is directly behind you, and your shadow points at the center of the circle the rainbow is describing. There are 2 types of rainbows. One that is formed in the sky and one that is formed by mist. But they both have something in common. All rainbows are formed by water or moisture and light put together and makes a rainbow. That's why you see rainbows right after rain.
A rainbow is actually round. On the ground, the bottom part is hidden. In the sky, like from the view of a flying airplane, it can be seen as a round shape. Check the Popsci… link for more information.
The rainbow is almost always in the day sky, produced by sunlight. Very rarely, one can appear in the night sky, produced by moonlight.
A rainbow is a portion of a circle. It represents an angle between the line Sun-to-back-of-your-head, and the angle of total internal reflection of each wavelength in the …raindrops. Its an optical illusion. As the light passes thought the moisture in the sky its refracted causing the light to change it direction as the light leave the droplets its does so at differing angles these angles.These different colors of light have all slightly different directions and so display each color components of white light. Thus, the angle of bending is different for different wavelengths of light. This band of colors appears in the same pattern as the colors of a rainbow. This means, all the different colors of light (red, orange, yellow, green, blue, indigo and violet) combine to give you what is called white light You can see circular rainbows sometimes when viewing them from aircraft or high mountain tops where the full area needed to produce a visible circular rainbow has enough droplets. The rainbow's appearance is caused by dispersion of sunlight as it is refracted by (approximately spherical) raindrops. The light is first refracted as it enters the surface of the raindrop, reflected off the back of the drop, and again refracted as it leaves the drop. The overall effect is that the incoming light is reflected back over a wide range of angles, with the most intense light at an angle of about 40-42 degrees. The different colors (wavelengths) of light have different refractive indices which cause them to bend unequally. Thus, a rainbow is arc-shaped. We don't actually see the full circle because the earth gets in the way. The closer the sun is to the horizon, the more of the circle we see. Right at sunset, we would see a full semicircle of a rainbow with the top of the arch 42 degrees above the horizon. The higher the sun is in the sky, the less of a rainbow is visible above the horizon.
Rainbows are caused by sunlight glinting off tiny water particles in the sky, bouncing the light back towards the observer.
Half of A circle
When light passes through a concave mirror lights are deflected and form any colour because light consist of 7 colour. After rainfall there are water vapour in the sky those a…re worked as concave lens. When sunlight passes through the water vapour lights deflect and shows 7 colour. We see many colour from a bubble because of the reason.
I think its God's way of saying everything is gonna be alright. Regardless of what your going through He is saying he is still in control, keep believing.
a kite? with very colorful string Rainbow perhaps
when its been raining for a while and then the sun comes out.
The bible says that the rainbow was a promise from God Almighty to Noah that He would never flood the whole earth ever again.
Apparently, a rainbow appears in the sky because both, rain and sun, mix together and produce light and colours. Some people belive that at the end of a rainbow is gold. But h…ow does the gold just appear suddenly?
a semicircle is half of a circle... so like a circle cut in half, in a straight line. just for some information you may also need in the future: area of a semicircle: multip…ly the radius by itself and then multiply that by pi (approx. 3.14). divide that by 2. perimeter (circumference) of a semicircle: pi times radius. hope that helps.
Rainbows are the result of sun light Reflecting and Refracting off of water particles in the atmosphere, usually occurring the most after rainfall in the air where water is be…ing evaporated, or when there is a very thin mist coming down. (Try taking a hose on a sunny day, put your thumb over it and make a mist-like spray pointed in opposite direction of the sun, WHOA! A mini rainbow!)
Rainbows are caused by sunlight glinting off tiny water particles in the sky, bouncing the light back towards the observer. In other words, any time you see a rainbow directly… in front of you, the Sun is directly behind you, and your shadow points at the center of the circle the rainbow is describing. This can last as long as the droplets and the Sun are in the right position, which makes it dependent on the weather, partly, and weather lasts as long as it feels like lasting! for as long as the suns out or as long as the sun is shining on the water