- 1 Rainbow
- 2 interpretation of the phenomenon of the rainbow
- 3 colors of the rainbow
- 4 How to explore the rainbow
- 5 References
Rainbow is a collection of colorful bows and serial United at its center, which is formed when the light falls on drops of water, shows a rainbow in the direction that goes against the direction of the sun's rays, and there must be a light one specific source produces a rainbow and usually results due to radiation the sun, and the rainbow is limited to drops only rain water, but any drops spray in the air or mist, and it is worth mentioning that the most common type of rainbow and the most brightest is the arc primary rainbow, which produces an internal reflection of one that occurs when light reflection once all drop of water, and there is also a secondary rainbow is less bright than the basic which results from Anaaksin internal light inside the drop, and colors entail the opposite sequence of basic arc. 
It is worth mentioning that the rainbow is not a body physically tangible, but it is an optical pattern is formed due to the passage of light in a large number of water droplets, and when one sees the rainbow in the sky, it would be in the rainbow he sees the center, so two people can not see the rainbow the same, each person sees the rainbow separate from the other, each be-formed by a group different from other drops, as it seems one that the parties to the rainbow be on the ground, but in fact is not the case, it does not have a full arc where he can not appear in places which has no spray or drops of water. 
Interpretation of the phenomenon of the rainbow
Usually consists of the rainbow because of output from the sun where the rays of light that it produces a white light, when light passes through water droplets suspended in the atmosphere occurs with refraction and then reflection, so that the light is reflected in a drop of water to fall back to the opposite direction of the direction issued him , and when it breaks light into a drop of water, it is moving in the curved directions and are not straight, and in the case of the arc of a rainbow, the white sunlight breaks and bends and when it breaks separated into a group of radiation or with different colors X is a constituent of the colors of sunlight depending on the wavelength, and each beam of these rays bend different from the other angle.  
And ranging rays colors between Abannfjsa, red, yellow, orange, green, blue, and after the break is reflected from the inner surface of the water drop once, and then broken again when they leave them and shaped so the rainbow, where the concentrated rays emerging and condense once graduated from the drop angle of 42 degrees with the path of entry of the original X (point corresponding to the sun), and be the color of the internal arc of the rainbow purple, while a bow exterior color red, has seen the observer rainbow secondary, can be explained by the fact that some rays broken twice reflected from the inner surface of the drop angle of 51 degrees and this be a secondary rainbow. 
Colors of the rainbow
Each color wavelength is different from the other color, and the longest wavelength is the red color while the shorter wavelength is the color violet, when rays broken out of the water drop, the red color comes out an angle of 42 degrees so be color is the outer surface of the rainbow, while n violet color comes out at an angle of 40 degrees and almost be the internal color of the rainbow, and other colors ranging between them. 
It is worth mentioning that there are other waves reflected sunlight and be invisible to the human being, Kalocap above Abannfjsah rays Abannfjsah and gamma rays and infrared, and show these rays are not visible on the sides of the rainbow visible, while the order of the rainbow colors starts from red from the outside, followed by color orange, Valocefr, then green, then blue and indigo and finally violet, on the edge of the rainbow all colors overlap to form the color white light of the sun's original color so it looks like a rainbow bright white when parties.  
How to explore the rainbow
To explore the rainbow must observer to choose the right place at the right time, and the probability of seeing the arc large rainbow at the end of the day, specifically in areas where thunderstorms occur in hot days, where it rains at noon time and scattered rain drops evening, and one can explore rainbow through the stand to be back to the sun, and then determines the interview point to the sun and usually this point towards the light of the head, and then wipe the sky at an angle 42 degrees almost above the point opposite to the sun, and when you see the rainbow at this class, it would be rainbow primary arc. 
The rainbow secondary appears when you scan the sky at an angle 51 degrees from the point opposite the sun and 9 degrees for primary arc, this arc is less shine and be colors arranged unlike the rainbow primary as previously mentioned,  It can be said that needed to see the circumstances, the rainbow is the presence of sun and rays to the presence of droplets stuck water in the atmosphere or spray, or even fog, as should the observer standing in the right corner of the rays of the sun and that the sun behind him, and in the case of the availability of all these things, the rainbow will appear at the end of the day when it becomes the sun low in the sky that day, and it is worth mentioning that you can see the rainbow around the waterfalls or around water hose, for example, if the right conditions. 
One can be seen more than a rainbow, where it can be shaped rainbow Mzodj arc or triple or even could be four times the basic if they reflected the sun more rays than once inside a drop of water, but any rainbow else except for the core will be lackluster and bright because the rays lose energy during more reflection than once inside water droplets. 
- ↑ "Rainbow", www.britannica.com, Retrieved 2018-6-26. Edited.
- ^ A b c t w body of authors (1999), Global Arabic Encyclopedia (Second Edition), Riyadh, Saudi Arabia: Foundation work Encyclopedia Publishing and Distribution, part 18 (s), page: (419.420). Adapted.
- ^ أ ب ت Amber Pariona (2017-11-16), "How Is A Rainbow Formed?"، www.worldatlas.com, Retrieved 2018-6-26. Edited.
- ↑ "rainbow", www.nationalgeographic.org, Retrieved 2018-6-26. Edited.
- ^ أ ب 2016-3-4, "How do rainbows form?"، www.media.bom.gov.au, Retrieved 2018-6-27. Edited.
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