Wavelengths are usually measured in units of nanometers (1 nm = 10 −9 m) or in units of angstroms (1Å = 10 −10m). The colors of the visible spectrum stretch from violet, with the shortest length, to red, with the longest wavelength. The spectrum of electromagnetic radiation, which includes visible light.
the Visible light is the light humans see with their eyes. Visible light comes primarily from the sun, but also from other natural and man made light sources. The visible light spectrum is the range of wavelengths that make up visible light.
he light that humans see with eyes is called visible light. Visible light contains every color that humans can see. There are distinct properties of visible light that set it apart from other types of electromagnetic radiation.
If the visible light spectrum passes through a prism, the resulting rainbow reveals all the colors in the spectrum. These range from red, with a wavelength of 700 manometers (which is incredibly small), through orange, yellow, green, blue and finally violet, with a wavelength of 380 nanometers (which is even smaller!). \
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