Dec 5, 2014 · The rainbow needs sun and rain. Normally during the rain there is no sunlight. After the rain there is generally still rainfall but it has moved away. If the sun has come out where you are and strikes the rain that is moving away from you at the right angle then you will see a rainbow. rainbow reference for more details.

and regarding full circular rainbow, But 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 raindrops and have the sun behind you.

May 1, 2018 · The Sun needs to be below 40° above the horizon to see a rainbow, and at that high of an angle, the rainbow won't be very good. Rainbows are best in when they form less than an hour or so after sunrise or less than an hour or so before sunset. Rain needs to be falling opposite the Sun. Off to the side: No rainbow.

Aug 28, 2015 · But after the rainbow is formed it should not stay for much long as the rain drops are falling downwards so their position must change . As discussed in the comments, and explained in the wiki article , the raindrops replace each other as they are falling and your eyes see a continuity similar to the one when watching movies and television.

Feb 14, 2016 · As the wavelengths increase, from red towards blue, the index of refraction increases so that the colors are dispersed in the colors of the rainbow. Imagine the sun is behind you, with the rain drops in front of you - then the rainbow is the visible portion of a circle centered about the line from the sun through your head.

Sep 3, 2017 · The idea I had was that normally we model rain drops as small spheres, and this gives a characterizing angle for the perceived rainbow. Now, if the rain falls with a large horizontal velocity component, will this deform the raindrops, making them more elliptic, thus changing the angle of the perceived rainbow?

Feb 18, 2023 · This looks more like a rainbow produced with a garden hose. This means it not due to dropplets high in the sky but by a mist very close to the ground. The driver is heading towards the rain and the rainbow disapears when he enters the rain with big droplets.The mist looks like it is at the edge of the rain area, on the left.

Apr 20, 2015 · A rainbow is formed by light refraction in water droplets. On earth we typically see a rainbow during rain while it's sunny. As there is no atmosphere on the moon, there will be no rain and thus no rainbows. However, if you were to spray small water droplets on the moon you might see a rainbow (but the droplets will quickly evaporate in the ...

May 21, 2016 · 4) The light that reflects repeats this process every time it encounters the surface from the inside. Light that exits after one reflection makes the primary rainbow. The total deflection angle D, relative to your own shadow, depends on A and the color of the light, and looks like this: 5) Look at just the red line.

In a rainbow the colors order is red then orange (made from red and yellow, thus making sense that it appears in between them) the yellow followed by green after which comes blue (again green formed from yellow and blue). The final color is purple, which is next to the blue' but not in any contact with the red.