Is it true that grass, leaves, etc are in fact black but only appear to be green in sunlight?
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All things are appear black if they are not lit.  Our eye sees black where there is an absence of light.\n\nRegarding sunlight specifically.  Look at flowers or plants in your home at night.  They don't appear black in artificial light do they?\n\nThe substance that most plants use to absorb light is called chlorophyll.  It happens to be green.  However there are lots of other things in plants that have other colours.  In the leaves they tend to be masked by the predominance of chlorophyll.\n\nAs a plant starts to die,it looses its chlorophyll and the other colours become more visible.  That is why fall leaves have different colours for different plants.\n\nAs a side note, the colour you see on an object is actually the light that is not reflected from a surface.  So something that we see as green has actually absorbed most of the red light reflecting, to your eye, only green.
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Things have unique color because they reflect and absorb light frequencies differently.  Green chlorophyll absorbs all of the other component colors of the visible spectrum and only reflects green light; therefore, we say 'it's green.'\n\nYou might still ask, "...but why?" and the answer would probably be one that describes the atomic/molecular components of chlorophyll and their their particular physiologic properties.\n\n(((( r u randy? ))))\n.
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plants hold special bodies called chloroplasts, and within these chloroplasts there are chlorophyll, which absorb all the colours in the spectrum, apart from the colour green, which is why they look green - because the chlorophyll do not absorb green light
594651
Its a high frequency low wavelength light.can you see UV? no right? so it appears black.. also its monochomatic that you dont see the tinge of other light or colour...
11528
Why questions are often difficult to answer but you seem to have a very \nreasonable answer to explain your observation. To really confirm that the \nnongreen parts of your variegated leaves do not photosynthesize as much as the \ngreen parts, you would need to do one of the following:  \n\n1. Starch test the leaves to show that there is little or no starch in nongreen \nareas and lots of starch in green areas. This may not work on all leaves \nbecause some plants do not accumulate starch in their leaves but export \nphotosynthates as sucrose.\n\n2. Extract chlorophyll from green and nongreen areas to show the nongreen areas \nhave little or no chlorophyll while green areas have lots of chlorophyll. Just \nbecause a leaf is nongreen does not mean that there is not chlorophyll there. \nIn some nongreen leaves, other pigments such as carotenoids and anthocyanins, \nsimply mask the green chlorophyll.\n\n3. Measure photosynthesis in leaf disks cut from green and nongreen areas of \nthe leaf to show that photosynthesis occurs in green but not nongreen parts.
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1.Though the Japanese maple didint show green color, it has   chlorophyll in its leaves surely, the % is lesser to be visible, all reactions in the photosynthesis cycle except the reception of sunlight (photons in quantum packet) are carried over in pigments other than green i.e, chlorophyll also.\n2. As said above all green leaves has other pigments also, such as anthocyanin giving red, xanthophyll giving yellow, their different proportions to create shades between red and yellow, e.g orange. Once the leaves decided to die, ie, abscission process the water and food through vascular bundle stops by a developing barrier between plant and the leaf. Once fuel is stopped chlorophyll begin to disintegrate and decolorize, thus the other hidden colors show up depending upon their concentration in leaf.
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Sky blue\n--------\n\nYou did not check the archive of previously asked questions before you posted your question about the sky's color. This has been asked and answered more than 400 times so far here. \n\nHowever, the reason the sky appears blue (at least most of the daylight hours) is that the atmosphere is mostly oxygen and nitrogen, which are just the right size molecules to scatter the blue light, but let the other colors pass unimpeded. \n\nSo when you take the blue away from the mostly white sunlight, you get sorta yellow sunlight. \n\nAs the sun sets, the sunlight passes through more air, and more blue is scattered away, leaving the sunlight even less blue, that is, more orange. \n\nAs the sun sets even farther, even more blue is scattered away, and the sunlight appears red.\n\nGrass Green\n-------------\n\nFrom the color of chlorophyll, the chemical that plants use to capture energy from sunlight. \n\nEarth Boring\n-------------\n\nIf the earth is boring, then what is not boring to you?
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In real life, everything no matter how black reflects either a tiny bit of light or infrared rays.  Even if it's completely black, we could still located with sound or radio waves.  \n\nBy the way, notice that the stealth fighter and bomber are black.\n\nIn scientific terms, something that is completely black can still be found by following light sources behind it because by definition, a black object either blocks or absorbes light.  So it has to disturb light sources coming from "behind" it.  By the way, that's how many plants, moons, and black holes were proven, as I recall.
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You guys got a lot of it, but the sun is actually green. The atmosphere absorbs much of the light to make it more of a yellowish white light. Pollution and the ozone layer trap and absorb the green light that the sun produces. Then you see what you see. (were you looking at the sun??? :)
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All natural light sources generate a "spectrum" of frequencies that approaches the "black body" radiation curve. The peak of that curve denotes the temperature of the emitting object. Certain frequencies can be affected in transit via interaction with materials as in emission and reflection nebula (ie. various places within the Orion constellation). The sun emits UV radiation commensurate with its black body ideal.\n\nUNLESS someone can show that the moon absorbes ALL UV frequencies on reflection then by definition:\n\nMOONLIGHT DOES INDEED CONTAIN UV FREQUENCIES\n\n===============================================\nSome of you people amaze me, you answer questions that you know NOTHING about. Answers like "No because it is reflected light" are a case in point. Is your blue shirt invisible in the mirror because the light coming from your shirt is lost as it reflects off of the mirror. I THINK NOT! Reflected light IS LIGHT. Some of it is absorbed, reflected, refracted but it is light. YES; the UV portion in moonlight is very weak, hey guess what -ALL THE LIGHT frequencies in moonlight are weak; THATS WHY MOONLIGHT IS DIM.\n==============================\nUV is NOT produced only from objects above 24000 degrees. It is produced at ALL temperatures, but the lower the temperature the lower the amount of UV that is produced. PLEASE Google "black body radiation"
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Vegetation emits in the infrared wavelength.  On false-color infrared mosaics, vegetation appears in red instead of green. The "redness" indicates vegetation density, type and whether growing on dry land or in a swamp. Grasslands appear light red, deciduous trees and croplands appear red, and coniferous forests appear dark red or maroon. Desert areas appear white and urban areas appear bluish green. Lakes, rivers and oceans appear in various shades of blue, dark blue for deep water and light blue for shallow or turbid water
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since plants are mainly composed of chlorophyll and chlorophyll is green then the plants tend to be green. but they also have other colors such as red or yellow. thats why when trees shed their leaves in the fall what they are really doing is killing off the chlorophyll allowing the other colors to come out and be noticed.
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no it is wrong sunlight is the mxture of seven colors in those the infrared rays have maximum wave length , even the plants absorb the infra red rays during photosynthesis.nothing is returned by the earth
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Plants are green because they contain a green pigment called Although only found in plants, it is very similar in structure to haemoglobin - the red pigment of our blood. chlorophyll. Mg Fe chlorophyll haemoglobin Chlorophyll allows plants to capture sunlight and is used to power chemical reactions to make food. This process is called and during it, chlorophyll captured packets of light energy (called photons) are used by the plant to convert carbon dioxide and water to make sugar and also importantly for us, oxygen. photosynthesis\n\nThere are so many plants and therefore so much chlorophyll on the earth\nthat it is possible to tell what season of the year it is from space. Notably, what we cannot tell from satellite pictures is that most of the chlorophyll is found in the sea within 'freeliving' plants called algae. Winter Summer The sugar is then transported from the leaves, modified and stored in other parts of the plant. These parts are frequently the ones we eat such as seeds or grains and tubers. Nearly all plants are green and therefore contain chlorophyll, apart from a few parasitic plants. Some plants also have variegated leaves - parts of the leaf which contain chlorophyll are green whereas other parts contain no chlorophyll and are therefore white or yellow.
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differnet colors in leaves are targted at different wavelengths or colors in the sunlight, like seaweed is brown and stuff like taht.
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why is the grass green?
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All of them?! I thought all plants were phototropic and will always move towards a light source.\n\nYou could also take a look at this probably more what you meant...