Why rainbow is like bow ?

Answer 1

It is like a bow because the effect comes into play at the same distance to the observer. There are water droplets everywhere however, only at the correct distance does the effect becomes visible to the observer. So the rainbow appears as a bow. If the observer floats, he should see a circle. Every rainbow (caused by 1 internal reflection in the water droplet) is accompanied by an inverted (colour wise) secondary rainbow (much fainter - 2 internal reflections). Next time, when you see a rainbow, try to look out for the fainter rainbow and take note of the order of its colours.

Answer 2

It is like a bow because the effect comes into play at the same distance to the observer. There are water droplets everywhere however, only at the correct distance does the effect becomes visible to the observer. So the rainbow appears as a bow. If the observer floats, he should see a circle. Every rainbow (caused by 1 internal reflection in the water droplet) is accompanied by an inverted (colour wise) secondary rainbow (much fainter - 2 internal reflections). Next time, when you see a rainbow, try to look out for the fainter rainbow and take note of the order of its colours.

Answer 3

A rainbow is an optical and meteorological phenomenon that causes a nearly continuous spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. It takes the form of a multicoloured arc, with red on the outside and violet on the inside. Even though a rainbow spans a continuous spectrum of colours, traditionally the full sequence of colours is most commonly cited as red, orange, yellow, green, blue, and violet. It is commonly thought that indigo was included due to the different religious connotations of the numbers six and seven at the time of Isaac Newton's work on light, despite its lack of scientific significance and the poor ability of humans to distinguish colours in the blue portion of the visual spectrum.
it is like a bow because of the rays ot the sun and the shadow it assumes to be as a bow.

Answer 4

When we draw a circle with a compass, we keep the angle between the two legs constant.

A ray from the top most point on the rainbow to our eye makes an angle to the horizontal direction. Theory says this angle is a constant.

Imagine the ray as one leg of long compass and the horizontal direction as another leg which points the center. Keeping the angle constant when the compass is rotated an arc is formed.

If we go high up we can see the whole circle.

Answer 5

Some science here. Rainbow are made from water evaporates onto the sky after rain fall. The water on the ground surface (like leaf) are the main source reflecting the colour to be seen. Make some experiment..... Put a bottle in front of you under a sun. Look onto the ground. ... u can see rainbow.

Answer 6

The Persian astronomer Qutb al-Din al-Shirazi (1236-1311), or perhaps his student Kamal al-din al-Farisi (1260-1320), is thought to have first given a fairly accurate explanation for the rainbow phenomenon [1]. The work of Robert Grosseteste on light was continued by Roger Bacon, who wrote in his Opus Majus of 1268 about experiments with light shining through crystals and water droplets showing the colours of the rainbow. Theodoric of Freiberg is also known to have given an accurate theoretical explanation of both the primary and secondary rainbows in 1307. He explained the primary rainbow, noting that "when sunlight falls on individual drops of moisture, the rays undergo two refractions (upon ingress and egress) and one reflection (at the back of the drop) before transmission into the eye of the observer" (quoted from David C, Lindberg, Roger Bacon's Theory of the Rainbow: Progress or Regress?, Isis, Vol. 57, no. 2, p. 235). He explained the secondary rainbow through a similar analysis involving two refractions and two reflections.
René Descartes' sketch of how primary and secondary rainbows are formed
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René Descartes' sketch of how primary and secondary rainbows are formed

Descartes, in 1637, further advanced this explanation. Knowing that the size of raindrops didn't appear to affect the observed rainbow, he experimented with passing rays of light through a large glass sphere filled with water. By measuring the angles that the rays emerged, he concluded that the primary bow was caused by a single internal reflection inside the raindrop and that a secondary bow could be caused by two internal reflections. He was able to back this up with a derivation of the law of refraction (subsequently, but independently of, Snell) and correctly calculated the angles for both bows. His explanation of the colors, however, was based on a mechanical version of the traditional theory that colors were produced by a modification of white light.

Isaac Newton was the first to demonstrate that white light was composed of the light of all the colours of the rainbow, which a glass prism could separate into the full spectrum of colours, rejecting the theory that the colors were produced by a modification of white light. He also showed that red light gets refracted less than blue light, which led to the first scientific explanation of the major features of the rainbow. Newton's corpuscular theory of light was unable to explain supernumary rainbows, and a satisfactory explanation was not found until Thomas Young realised that light behaves as a wave under certain conditions, and can interfere with itself.

Young's work was refined in the 1820s by George Biddell Airy, who explained the dependence of the strength of the colours of the rainbow on the size of the water droplets. Modern physical descriptions of the rainbow are based on Mie scattering, work published by Gustav Mie in 1908. Advances in computational methods and optical theory continue to lead to a fuller understanding of rainbows. For example, Nussenzveig provides a modern overview[2].

Answer 7

rainbow is actually round or in circle.but we only see a part of it.due to it the rainbow looks like a bow

Answer 8

Beca8se the sun is spherical... round. Have you ever seen a round rainbow? I have. You can sometimes see it during a full moon when it's cold. And if it's misty, you can see it round around the sun.

Answer 9

Refracted light of the spectrum.

Answer 10

why is the rainbow multicoloured?