Question

What information do we get about sunlight from the formation of a rainbow?

Answer 1

A rainbow is a meteorological phenomena that occurs when light is reflected, refracted, and dispersed in water droplets, resulting in a spectrum of light seen in the sky. It's shaped like a multicoloured circular arc. Sunlight-induced rainbows always appear in the sky region directly opposite the Sun. Rainbows can take the form of complete circles. The viewer, on the other hand, usually only sees an arc created by lit droplets above the ground, centred on a line from the sun to the observer's eye.

Complete step-by-step solution:
When the sun is shining while it is raining, a rainbow may appear in the sky! When sunlight travels through water droplets, it bends and splits into the rainbow's hues. Sunlight is a combination of all visible hues and is referred to as visible or white light. Because water droplets split white sunlight into the seven colours of the spectrum, rainbows appear in seven hues (red, orange, yellow, green, blue, indigo, violet). It is feasible to create the band of seven colours using white light and a narrow beam of light, a glass prism, and a white wall. This arrangement should be placed near a window. Place the glass prism such that light from the window falls on one side of the prism before falling on the white wall. The light reflected on the wall has a variety of hues, as you can see. White light is divided into seven distinct hues by the prism. A dispersion of light is the breaking of white light into numerous hues.

Note: To obtain a spectrum, the light source does not have to be white all of the time. A band of three to four colours is produced by the composite light, which has a range of three to four colours. The light produced by a 40W tungsten filament bulb is not pure white. It is a composite light source that will create a spectrum, albeit it may not be identical to the spectrum of white light. The kind of spectrum is determined by the nature of the light source.