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How is a rainbow a physical change?
A true change in color is almost always associated with a chemical change.Here are a few examples of visual changes that are not color changes due to physical change.Chemical change: When your toast changes from white to brown, the heat of the toaster has caused a chemical change in the outer layer of the toast.Physical Change: When rain changes to snow, we have the impression that it appears different. Water appears transparent and snow appears white, but the difference is really a difference of how light is scatters from snow. (A white color normally means diffuse reflection.)Chemical Change: Photochromic eyeglasses are normal transparent glasses which darken when exposed to sunlight. This is an example of reversible chemical change induced by light.Physical Change: A rainbow will appear when water droplets form in air and this can provide a dramatic color appearance. In fact, the color is again not the color of the droplet but the way diffraction splits the light into different colors as seen by the observer.A physical change that is associated with a true change in actual color (not a change in light scattering) is quite exotic and no good example of such a change has been given in this answer.
Does Neptune's colour change according to something?
Neptune's color appears blue due to the presence of methane in its atmosphere, which absorbs red light and reflects blue light. Its color may vary slightly depending on factors like cloud cover and atmospheric conditions, but it generally appears blue from space.
How can a photon have color?
A photon's color is determined by its wavelength, which corresponds to a specific color in the visible spectrum. A photon of shorter wavelength appears bluer while a longer wavelength appears redder. The perception of color in photons is a result of how our eyes detect and interpret different wavelengths of light.
Is the color of an object the sum of the color it will reflect or transmit?
The color of an object is determined by the specific wavelengths of light that are reflected or transmitted by the object. The color we perceive is the sum of the light that is reflected or transmitted, and not the light that is absorbed by the object.
Why color of light is called color addition?
Because the combination of some colors produce the "white" light (color).
What is light called that appears to bend called?
Light that appears to bend is called refraction. This occurs when light passes from one medium to another, causing a change in its speed and direction.
Why the sky appears to change color and what cause this to happen?
change in the composition of the gasses and the angle of refracted light
Does the color of light affect how it appears in water?
no
What color appears on top of a stop light?
Red.
Does the color of light affect how bright it appears in water?
no
Is it true that the color an object appears to be is the color of light that is absorbs?
NO it is not true an OBJECT appears colour because it reflect that colour
Is purple color a physical and chemical change?
No, the color purple is a physical property of an object that results from the absorption and reflection of certain wavelengths of light. It is not the result of a physical or chemical change, but rather the interaction of light with the object's molecules.
What color is Ureanus?
It appears as a bluish color because of the gases in its atmosphere.
What color is diamond dust?
Colorless. Any color it appears to have is due to the refraction of light.
What is the lightness or darkness of a color called?
Value refers to the proportion of light or dark in a color.
What is the name of the fabric that changes color when exposed to the light?
Lots of fabrics change colour when exposed to light. It's called "fading".
What color does white light minus yellow light appear?
White light minus yellow light appears as a bluish color, due to the absence of yellow light in the spectrum. This phenomenon is known as color subtraction or color mixture.
