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darkar
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What determines the colour? Frequency or wavelenght?
darkar said:What determines the colour? Frequency or wavelenght?
selfAdjoint said:Frequency times wavelength is the speed of light, so they are inversely related and either of them can be used.
The frequency and wavelength of light are inversely proportional to each other. This means that as the frequency increases, the wavelength decreases, and vice versa. The color of light is determined by its wavelength, so the higher the frequency, the shorter the wavelength and the more bluish the color appears. Conversely, the lower the frequency, the longer the wavelength and the more reddish the color appears.
Yes, different frequencies of light can create the same color if they have the same wavelength. This is because the human eye perceives color based on the wavelength of light, not its frequency. For example, both red light with a frequency of 4.74 x 10^14 Hz and violet light with a frequency of 7.5 x 10^14 Hz have a wavelength of approximately 400 nanometers and will appear as the same color to the human eye.
Objects appear to have different colors because they reflect different combinations of frequencies of light. For example, a red object appears red because it reflects mostly red light and absorbs all other colors. A blue object appears blue because it reflects mostly blue light and absorbs all other colors. The combination of frequencies that an object reflects creates the color that we perceive.
Yes, the frequency or wavelength of light can change the color of an object. When light of a certain frequency or wavelength is shone on an object, the object will reflect that color and appear to be that color. Changing the frequency or wavelength of the light will change the color that is reflected by the object. For example, shining red light on a blue object will make it appear purple.
The human eye perceives color through specialized cells called cones, which are located in the retina. These cones are sensitive to different wavelengths of light and send signals to the brain, which interprets them as different colors. The three types of cones are sensitive to red, green, and blue light, and the combination of signals from these cones allows us to see all the different colors of the visible spectrum.