In the US state of Arizona, at the top of Mount Kitt Peak, there is a complex of three solar telescopes, the central of which is considered the largest telescope in its category on the entire planet.
Let's find out more about it …
The largest of the three telescopes has nothing but mirrors. No apertures or lenses. Obviously, such a directed sunbeam would greatly heat the elements of the telescope. The diameter of the device, built back in 1962, is 1.6 meters. Despite the fact that the McMath-Pierce telescope is oriented exclusively towards the Sun, several of the brightest stars can be observed with it. To the left and right of the main telescope, two more auxiliary ones are functioning. In addition to scientific interest, the world's largest solar telescope is also of architectural value.
It is still not clear why some colors are missing in the sunlight. The picture shows all the colors emitted by the Sun in visible light. This light passed through a prism-like instrument, and the spectrum shown here was taken at the McMath-Pierce Solar Observatory. The spectrum demonstrates that our yellow Sun emits light of absolutely all colors, although, of course, brighter in the yellow-green part of the spectrum. The dark bands in the spectrum are due to the fact that the gas near the Sun's surface absorbs the light emitted by its lower layers.
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Different chemical elements in the composition of the gas absorb light of different colors, so by the spectrum we can determine what chemical elements the gas on the Sun consists of. So, helium was first discovered in 1870 in the solar spectrum, and only later was this element found on Earth. Today, most of the absorption lines in the solar spectrum have been identified. But not all!
By the way, human perception of color was not always the same as it is now. Until recently, blue did not exist for the human eye-brain.
However, in the above "spectrum" there is no blue and violet, green through light green turns into blue.
Or do you see otherwise?