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The color of Phobos is only based on telescopic images of it. To most, it appears to be a reddish-tan color.
The reddish-yellow color of the leaves indicates that the pigment is absorbing blue and green wavelengths of visible light. This is because pigments appear as the complementary color to the wavelengths they absorb - in this case, absorbing blue and green results in the reddish-yellow color we observe.
The plant is not absorbing light from wavelengths in the red and yellow range of the visible light spectrum. Instead, it is reflecting these wavelengths which gives it its reddish-yellow color.
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Rigel appears bluish-white in color, while Betelgeuse appears reddish-orange to the human eye.
Because the sun must pass through a much thicker layer of the atmosphere. Doing so results in a higher chance that its radiation will be scattered. Ultimately, all the longest wavelengths of radiation get scattered while only the red ones remain.
Because it absorbs the longer reddish wavelengths. Links: http://www.whyiswaterblue.com/ http://en.wikipedia.org/wiki/Color_of_water http://www.webexhibits.org/causesofcolor/5B.html
Different materials absorb different wavelengths of visible radiation from sources like the sun or light bulbs. The wavelengths that are not absorbed are reflected as visible radiation, and the color we see depends on the wavelength of that reflected light, with a longer wavelength correlating to more reddish colors, and shorter wavelengths with more bluish colors. White objects reflect all of the visible radiation that strike them, which is why they absorb less heat than black objects, which reflect much less visible radiation.
Different materials absorb different wavelengths of visible radiation from sources like the sun or light bulbs. The wavelengths that are not absorbed are reflected as visible radiation, and the color we see depends on the wavelength of that reflected light, with a longer wavelength correlating to more reddish colors, and shorter wavelengths with more bluish colors. White objects reflect all of the visible radiation that strike them, which is why they absorb less heat than black objects, which reflect much less visible radiation.
The color of Phobos is only based on telescopic images of it. To most, it appears to be a reddish-tan color.
The reddish-yellow color of the leaves indicates that the pigment is absorbing blue and green wavelengths of visible light. This is because pigments appear as the complementary color to the wavelengths they absorb - in this case, absorbing blue and green results in the reddish-yellow color we observe.
The plant is not absorbing light from wavelengths in the red and yellow range of the visible light spectrum. Instead, it is reflecting these wavelengths which gives it its reddish-yellow color.
Because Mars has an atmosphere. The Moon and Mercury do not.
A leaf appears black or very dark under red light because it primarily reflects green light, which is absent in red light. This phenomenon is due to the absorption and reflection of specific wavelengths of light by the pigments present in the leaf.
Violet and purple are similar colors but not exactly the same. Violet is a spectral color with shorter wavelengths, while purple is a mix of blue and red. In general, violet appears more bluish and purple appears more reddish.
Yes, the color of the sun appears to change throughout the day due to the Earth's atmosphere scattering sunlight. During sunrise and sunset, the sunlight has to pass through more of the atmosphere, scattering shorter wavelengths like blue and leaving longer wavelengths like red to dominate, creating a reddish hue.
It doesn't, so "why" is a moot point. The moon may appear yellowish or even reddish when it's near the horizon, for the same reason the Sun does: the light has to travel through more atmosphere, which means the shorter (blue and violet) wavelengths have more opportunity to get scattered out. The longer wavelengths that don't get scattered but reach your eye directly give the sun or moon that yellowish or reddish cast. The color the moon appears to be is affected almost solely by its position; whether the sun is rising, setting, or on the opposite side of the world has essentially nothing to do with it.