Finding the spectrum of the sun? There are several spectrums of sunlight

Everyone has their own perceptual system, sweet and sour, red, yellow, green and blue.

The human eye has two different sensors: rods and cones. In general, rods are more sensitive, but they can only produce black and white images, followed by cones, but they can see in color.

When the light level is not strong enough to excite the cones, vision will be dominated by rods, which is why we always look at moonlight white. But when the photometry is sufficient, due to the cones of the light (eye) with the visible wavelength of 450nm to 650nm's response to light) is more sensitive, so we basically get a glimpse of the colorful world.

Of course, I can't sense if the blue in your eyes is the same as what I see. For most people, though, the orange sunset is pretty much the <> everyone agrees on the view

Each instrument has its own specific observation wavelength limits (just like you can't look at visible light with a radio antenna), and the sun can indeed be said to be yellow from the solar spectrum obtained by optical telescopes, and the white image of the sun in general scientific research will also be made yellow (the ultraviolet band map will be made colorful, just to make it easier to distinguish). But with the human eye, the situation is different, the sunlight is already strong enough to make people think that it is white (I personally think it will only be stronger in space, so it should be dazzling white, please refer to the relevant documentary on the earth on the space station to confirm), and after adding a filter, take the naked eye to see the sun from the telescope, and its color depends on the transmission wavelength of the filter.

In short, the color of the sun depends on the combination of the instrument you use and the human eye, and the color of the sun image in astronomy depends on the band and the <> of drawing

The solar spectrum includes several spectral ranges such as radio waves, infrared rays, visible light, purple mountain transport lines, X-rays, and rays.

The solar spectrum is a continuous spectrum of different wavelengths, which is divided into visible light and invisible light.

Visible light has a wavelength of 400 to 760 nanometers, and is scattered into seven colors: red, orange, yellow, green, cyan, blue, and violet, and when concentrated, it is white light.

Invisible light is divided into two types, infrared light is located in the outer region of red light, wavelength is greater than 760 nanometers, and the longest is 5300 nanometers in the outer region of violet light, called ultraviolet light, with a wavelength of 290 to 400 nanometers. Sunlight has obvious biological effects, plants can synthesize under the action of sunlight, and animals can convert vitamin D under the action of sunlight; Infrared rays have a huge thermal effect, and ultraviolet rays have obvious sterilization effects.

Type. type (correct answer type to cancel the case to rent accompaniment).

Type. Type.

Absorption spectrum Because there are many elements in the outer solar atmosphere, the temperature is low, and it absorbs a specific wavelength of light, and the absorption line on the spectrum is called the dark line.

The spectral type of g2v has 7 spectral types from high to low stellar temperature, o b a f, g k m, which is the most basic.

There is a sentence that makes these 7 spectral types easy to remember: oh be a fine girl kiss me

o Type B is a blue-white star with the highest temperature.

A is white, f is yellowish-white, g is yellow, the sun is a yellow dwarf, 2 is the subdivided level, k is orange, and m is red.

And of course, there are other spectral types such as r, n, s y, which have been discovered in recent years, and they are different from those seven spectral stars, which can be considered a supplement to the spectral type.

There are also 7 levels of star brightness from high to low, which are represented by Roman numerals to .

It's like the brightest supergiant supergiant supergiant star giant star subgiant star dwarf star The sun is a dwarf star subdwarf

White dwarfs So the spectral type of the Sun is g2

Solar radiation is mainly concentrated in the visible light part (, infrared rays with wavelengths greater than visible light> and ultraviolet rays smaller than visible light ("less part. In the total radiant energy, the wavelength accounts for more than 99%, and is mainly distributed in the visible and infrared regions, the former accounts for about 50% of the total solar radiation energy, the latter accounts for about 43%, and the ultraviolet region has very little solar radiation energy, accounting for only about 7% of the total.

Sunlight is a composite light.

It doesn't matter what frequency, wavelength, vibration direction.

There should be an infinite number of kinds.

The solar spectrum is a bright-line spectrum, and the spectrum of things that can't emit light belongs to the absorption spectrum.

The 1st floor is wrong, bai the spectrum of the sun.

How can we look at it as an absorption spectrum, and it is a spectrum of light with many absorption lines on the basis of the zhi continuum, otherwise how can we see a colorful world? Linear spectra are just color light of a specific wavelength.

The sun is a high-temperature gas, and the spontaneous radiation of all high-temperature objects is an emission continuum, obeying the law of black-body radiation. When the continuum passes through the absorption of various elements in the sun's atmosphere, it becomes an absorption spectrum, so we can know what elements are on the sun through the absorption lines of sunlight.

The solar spectrum should be the absorption spectrum!!