What is the Colour of Sun?

What is the Colour of  Sun?

Ans : White !

Why the sun colour is white ?  comonly our concept   Sun is yellow  or orange or even red.


Rainbows are light from the Sun, separated into its colors. Each color in the rainbow (red, orange, yellow, green, blue, violet,Indigo) has a different wavelength. Red is the longest, blue the shortest.That means white colour is produced by addition these seven colour. This concept is given by sir.Issac Newton with colour wheel.That why we see the sun different colour  at different time. Thus colour changed difference based on the distance on the sun with our earth.That is why when it is low in the sky, it may appear yellow, orange, or red. But that is only because its short-wavelength colours (green, blue, violet) are scattered out by the Earth’s atmosphere, much like small waves are dispersed by big rocks along the shore. Hence only the reds, yellows, and oranges get through the thick atmosphere to our eyes.When the Sun is high in the sky, the shorter waves, primarily the blue, strike air molecules in the upper atmosphere and bounce around and scatter. Hence explaining why the sky looks blue.



Actually, all forms of light and energy are part of the same phenomena  the electromagnetic spectrum. Our eyes can detect only a small amount of this energy, that portion we call “visible light.” Radio waves, X-rays, microwaves, gamma rays, and the rest all have longer or shorter wavelengths than visible light, but otherwise are the same phenomena.

Scientific instruments can sometimes detect light that our eyes cannot. When people want to look at those, say, X-ray or ultraviolet images, they need to color them something that our eyes can detect. So the scientists pick some bright color, a color that would never be confused with viewing the Sun in white light. That way, we know from seeing a picture of a neon green or bright red Sun that the image was actually taken in some non-seeable version of light such as extreme ultraviolet or X-rays.


Blue Sun

Blue Sun   image from SOHO


Here is an image of the Sun. It is an image taken in the ultraviolet wavelength range by the EIT instrument on the SOHO satellite. It’s a false colour image, the detector on the satellite has captured the image data, the data has been processed and in this case coloured blue.