Light is measured by its wavelength (in Hertz). Wavelength approaches the separation between two progressive wave peaks or troughs. Frequency is the number of peaks or troughs per unit of time.
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Visible light has a frequency range of approximately 430–750 terahertz (THz) and a wavelength range of approximately 400–700 nanometers (nm). It falls between ultraviolet and infrared radiation on the electromagnetic spectrum.
Red light has the longest wavelength of all the visible light colors.
No, frequency and wavelength of visible light are directly related through the speed of light in a vacuum. The frequency of visible light waves is inversely proportional to their wavelength: shorter wavelengths have higher frequencies and vice versa. This relationship is described by the equation c = λν, where c is the speed of light, λ is wavelength, and ν is frequency.
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A shorter wavelength of visible light corresponds to higher energy and a bluer color, while a longer wavelength corresponds to lower energy and a redder color.
Visible light has a longer wavelength compared to UV light. UV light has shorter wavelengths that fall outside the visible spectrum, making it invisible to the human eye.