Why does black colour absorb light while white colour reflects light?
White reflects all wavelengths diffusely (the reflected rays go every which way). Silver (e.g., a mirror) reflects all wavelengths specularly (the reflected rays bounce off nicely).Now, metals do not necessarily always look like mirrors - they are often bumpier than that, so their reflection is a little bit diffuse as opposed to totally specular.Reflection of all wavelengths can be explained by band theory, which assumes that overlapping energy levels form bands. In metallic substances(Silver,white color) empty conduction bands can overlap with valence bands containing electrons. The electrons of a particular atoms are able to move to a higher-level state, with little or no additional energy. The outer electrons are said to be "free," and ready to move in the presence of an electric field. The highest energy level occupied by electrons is called the Fermi energy, Fermi level, or Fermi surface.Above the Fermi level, energy levels ar empty (empty at absolute zero), and can accept excited electrons. The surface of a metal can absorb all wavelengths of incident light, and excited electrons jump to a higher unoccupied energy level. These electrons can just as easily fall to the original energy level (after a short time) and emit a photon of light of the same( considered) wavelength.Black thing that absorbs incident electromagnetic radiation. Sometimes it's about chemical, via a variety of processes such that the electrons are excited by the light and eventually re-emit it in a non-visible wavelength.Black body is white body !!!sometimes white body appears as black body and black body appears as white body. A black-body can absorb all the radiation falling on it(light at all wavelengths) and appears black when cold. When it gets heated it can emit radiation at all wavelengths like a heated piece of metal. The hotter it gets the higher the photon frequency (energy) and so a shorter wavelength. Hotter objects emit more total radiation per unit surface area. This is not the same as photon absorption and emission of normal electron arrangements that fall within certain energy levels. As a black body heats up the electrons get more and more excited like a light bulb. At first red light and then the full spectrum. As all the colors mix it goes from red to orange to white. You don't see the greens and blues because they mix.
Why does the black color absorb light?
Black, as a color, actually doesn’t absorb light. Black, as a color, only absorbs visible light, so many black objects appear light colored or even “white” under infrared light or even UV light.This is where the color comes from. Many other colors occur because objects reflect, absorb and transmit different wavelengths of light to different degrees. If the color we see when looking at an object is mostly green, then we say that the object’s color is green. Likewise when we look through it, if the light that mostly comes through it is blue, we say the object is blue. When it gets difficult is when a different color is reflected than is transmitted, and then the object changes color depending on whether you’re looking at reflected light or transmitted light. Camera lenses are a good example of this - they look clear when you look through them, but often have a red, green or bluish tinge to them when you look at the light reflected in them.When an object reflects roughly equal levels of red, green and blue light, we see “white”. White doesn’t really exist as a color, it’s just something our brains do when we see equal amounts of reflection from an object.When we see no light reflected from an object, or not much light, we call it black. Again, black doesn’t exist, it’s just something our brains assign as a color when there’s not much of any light.So it’s not “Why does black absorb light”. It’s “Why do things that absorb light appear to be black” and the answer is that this is how our brains make sense of an object that doesn’t reflect much light relatively compared to the objects around it.Many colors like “Black”, “White” and even “Pink” and a few others don’t correspond to a single wavelength of light. They are colors our brain makes up so we can understand the signals coming from our eyes.So black, as a color might not really exist, and sometimes it doesn’t even absorb all light - just the light we can see, but we can still make sense of it because of the way our brains work.
When white light shines on a black object what happens?
when white light shines on a black object all the constituent colours of white light are absorebed by the body and it appears black
IS BLACK AND WHITE COLORS?
black is the absense of light white is the combination of all colors
Is black the void of all color and white the results of all colors?…?
Black is what you see when a surface absorbs all light hitting it. White is what you see when a surface reflects all light hitting it. When you look at a surface, the color you see is the light that is reflected. For example, a red apple absorbs all light but the color red, which it reflects. Ironically, if you wanted to make black, however, you would mix all colors. This is because with paint, you want to stop the colors from reflecting back to the eye to achieve black. So you would use every color to absorb all wavelengths equally. To make white, no wavelength can be absorbed, so you must have no color at all. Incidentally, the primary colors of light are red, blue, and green, while the primary "crayola" colors are red, blue, and yellow, the colors we mix to get black.