Physics
Atmospheric Sciences

Why does sun appear red during sunrise but sky appears blue?

789

Top Answer
User Avatar
Wiki User
2008-07-24 16:41:05
2008-07-24 16:41:05

This is due to the way that light particles diffues or pass through different amounts of differently coloured light. White light is made up of all of the colours in the spectrum, like shown in a rainbow, and when the light (generated from the sun) passes through our atmospher, all other colours of light except for blue are filtered out by the light passing through the atmosphere.

During evenings, or indeed some mornings, the sun is lower in the sky, this means that the light from it has to pass through a greater amount of atmosphere to reach the point that you are at. Due to this, it now filters out all parts of the light spectrum except for the red light, meaning the sky appears red. This is also why, on some rare occasions, the sky can appear green.

1
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0

Related Questions

User Avatar

The sky isn't always blue. The same properties and effects that make it blue most of the time also make it red and orange around sunrise and sunset. The sky appears blue during the day because the atmosphere scatters the higher frequencies of visible light (blue) more than the lower frequencies (red). This property also makes the nearly-white Sun appear yellow, and red at dawn and sunset.

User Avatar

The sun rays have to travel through a larger atmospheric distance. Most of the blue light and shorter wave lengths are removed by scattering . Only red colour,which is least scatterd is received by our eyes and appear to come from sun .Hence the appearance of sun at sunset or sunrise looks almost flat .lovenish

User Avatar

Error messages appear on a blue screen called a blue screen of death. (BSOD)

User Avatar

In the KJV, the word blue appears 34 times in the book of Exodus.

User Avatar

Blue appears black under a yellow light. For example if you have a blue car and you put a yellow light on it will appear black due to the absence of color. The light has nothing to reflect back.

User Avatar

the ocean is not blue in fact it only appears to be blue while it is clear like normal water. the sky is blue and the sky reflects of the water making the ocean appear blue ;)

User Avatar

Uranus and Neptune appear blue due to methane gasses in their atmospheres reflecting the blue spectrum from the dim sunlight. Earth also appears blue due to its vast oceans.

User Avatar

Yes, there are. Here is one example of each:-- Why does the clear sky appear blue ?-- How do we know that the clear sky appears blue ?

User Avatar

The banana is absorbing red and green light, but not blue. It appears black when illuminated with a blue light.

User Avatar

its because toad doesn't appear in super mario 3d world and blue toad appears insted

User Avatar

Season 1, Episode 10. Tex always appears on Episode 10

User Avatar

Sunlight contains all the colors of the rainbow. Particles floating in the air scatter some of the light (usually blue/violet) which is why the sky looks blue. During the early morning (and early evening) the light has to pass through more atmosphere to reach your eyes. The blue/violet has already been scattered away. The longer wavelengths (red and orange) are the ones that get through so that is why the sky is orange during sunrise.

User Avatar

black.because blue shirtreflects onlyblue light...all red light is absorbed so the shirt appears black

User Avatar

Not entirely. From space much of it appears blue because of the oceans, but land areas generally appear green or brown. Parts of it are obscured by white clouds.

User Avatar

uranus appears to be light blueish green because of the methane crystals in its clouds. It is also blue and purple

User Avatar

The sky is blue because the atmosphere scatters sunlight. Light with shorter wavelengths (blue, purple, violet) is scattered more in the atmosphere, so the sky appears blue; this is the same reason that sunsets and sunrises appear red and orange: at sunset/sunrise, the sun's light hits the atmosphere at a low angle, increasing the distance that the light must travel through the atmosphere. Thus, more colors are 'scattered out', even the blue-end of the spectrum, leaving red and orange colors.

User Avatar

Blood is only blue when carrying Carbone Dioxide back to the heart to be exhaled through the mouth. When your blood appears red it means it is carrying oxygen. For this reason you never bleed blue blood.

User Avatar

Venus actually appears yellow, due to sulfuric acid and carbon dioxide clouds all over its surface. However, when a photo is taken with an ultraviolet filter Venus does appear blue. See related links for a picture of a blue Venus and a picture of Venus in real colour.

User Avatar

Most oceans as seen from space or on boats during daylight appear blue.

User Avatar

FALSE!Sunlight appears to be white to the human eye but is actually a mix of all the colors in the rainbow. The blue and violet part of the spectrum has shorter wavelengths than the red and orange part. Shorter wavelength blue and violet light is scattered more strongly than red and orange light. When you look at the sky, you see the light that was redirected by the atmosphere into your line or sight. Since blue and violet is scattered more efficiently that red and orange light, the sky appears blue. When viewing a sunrise or sunset, you see only light that has not been scattered in other directions. The red and orange part of sunlight travels through a maximum length of the atmosphere, so a sunrise and sunset appears to be more orange and reddish.

User Avatar

Kerosene appears blue because it is used to store sodium. Since sodium is a very reactive metal, it is stored by immersing it in kerosene and hence imparts blue colour to kerosene.

User Avatar

Earth atmosphere makes it appear that way The same reason the sky is blue. Gas and small particulates in atmosphere scatters blue light far more than it scatters red light. Scattered blue light makes sky look blue in day. Unscattered red light (passing through extra atmosphere too at sunrise and sunset) makes sun look red/orange at sunrise or sunset.

User Avatar

The color of the sunrise as seen by an average human observer on earth is a gradient from red to orange to yellow, etc... This is because the higher energy blue light that we normally see in the sky is all scattered away during the longer path the light takes to reach our eye at sunrise and sunset.

User Avatar

Certain atmospheric conditions make the sky appear to be different colors. Things like C02, high concentrations of oxygen in the atmosphere, and even the amount of sun shining on the mountain can make it appear blue.


Copyright ยฉ 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.