What color is the Sun (and why does it zero yellow)

BBC Information Brasil

Since we were children, when we want to make a picture of the sky, zero hesitate a lot when choosing the color for paint the sun: we almost always select yellow crayons or crayons.

If we want it to be more colorful, maybe we’ll add some rays in electronic orange red. And sony ericsson what we’re illustrating the sunrise or pre-performance Sun, we’ve probably painted the sky in more orange loads too.

Zero However, the closest star on our planet zero is yellow, nor electronic orange much less red. Therefore these colors together electronically plus all.

Like any incandescent body, seeing that stars emit light in a continuous spectrum over colors. Sony ericsson you use a prism, see that light perform red sun learned separate in, orange, yellow, green, blue, indigo electronic violet all while colors perform visible.

In other words, the star that is in the center of the planetary system has the same colors on a rainbow of ours. In fact, the rainbow in zilch more, zilch less, performs that light performs Sun passing through water droplets in the atmosphere that act as tiny prisms.

Zero however, before over To begin drawing a cheerful Sun over various shades, we should clarify that zero would be entirely correct to say that it is also multicolored. u that sony ericsson gets a unique electronic color you can learn surprise knowing what color we’re talking about.

Want a clue? Look at the clouds, which reflect photo voltaic light. They are neither yellow nor multicolored therefore. They therefore white, because that’s the color the Sun actually emits.

BUT WHY DO WE SEE YELLOW?

    Each color perform spectrum sun has a different wavelength. At one end is red, which has the longest wave. From then on, the length gets smaller and smaller, according to the following sequence: orange, yellow, green, blue, indigo electronic violet.

    The photons, seeing that particles on colors on waves shorter, they are more scattered electronic jitters in comparison to longer ones with those over more waves. However, as the ze shift light has no resistance in space, they would not zilch that it distorts operating system photons. visual cortex the part perform brain is responsible for processing information that arrives through 2 eyes simultaneously. Electronic the result that we see white light. This is considered the “true” color perform Sol.

    Zero However, when operating system solar rays pass through an Earth’s atmosphere, some molecules perform distort operating system photons dieses shorter waves to air, making while more waves arrive from ns over long anticipated forms.

    “The atmosphere blocks the most energetic part of a light’s perform spectrum, the one that corresponds to the ultraviolet electronic blue area”, explains ngel Molina, author performs site on astronomical dissemination “Un Diario del Astrnomo” (O Diario performs Astrnomo, in free translation to Portuguese).

    “When removing part of these cold colors of a light, a result that we see from an Earth a warmer color, which tends to yellowish a lot”, he completes. as a red orange self?

    Uruguayan astronomer Gonzalo Tancredi, professor at the University of the Republic, explained BBC News Mundo, the BBC’s Spanish service, which, by absorbing more intensely the colors of the shorter waves (from violet to green), makes yellow predominate in the medium wave spectrum.

    A GREEN SUN?

      Tancredi also explained why many sites on the Internet claim that the star-king is actually green. “If you make a graph of the solar spectrum, it looks like a big mountain and the peak corresponds to the green zone,” he says. difference between the colors of solar radiation, if we looked at them with special instruments that allow this distinction, we would see that green radiation is the most intense (albeit by a very subtle difference).

      This detail helps explain why we see Earth’s yellow Sun, says the astronomer. “If you take the blue part and the shortest wave of that mountain, the peak goes to yellow,” he says.

      AND RED SUNSET?

      Now that we understand the reason for the yellow, why does the hue change in the early morning and late afternoon?

      Who has witnessed the birth or the sunset has seen the striking colors that the star emits, which even paint the sky orange and red. This is, once again, an illusion of ethics created by the interaction between the Sun’s rays and the Earth’s atmosphere. The highest performing point is near the horizon, and its light passes through a greater number of atmospheric molecules. With this, they would block a wider spectrum these bluish colors perform.

      This phenomenon that “colors” our skies has to do with the angle of the Sun in relation to the Earth. And it even has a name of its own: called Rayleigh scattering.

      Its most spectacular effect occurs at dawn and dusk, when we see the strongest colors and the longest waves: the red and the orange.

      And, of course, we can’t finish this story without first remembering that you should never look directly at the sun, not even with a telescope or binoculars. This can cause irreparable damage to your eyesight and even cause blindness.

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