That's the last color you can see on the red end of the spectrum.
Red light has the longest wavelength in the visible spectrum.
Red light has the longest wavelength in the visible light spectrum.
Red has the longest wavelength in the visible spectrum of light.
Red light has the longest wavelength in the visible spectrum.
Red is the longest wavelength of visible light
Red is the longest wavelength of visible light
The longest visible wavelength is that of the last color you can see on the redend of the rainbow. It's not exactly the same for every eye of every person.
Red light has the longest wavelength within the visible spectrum.
Red light has the longest wavelength in the visible light spectrum.
The color red has the longest wavelength of any color.
The color red has the largest wavelength. The color violet, on the other hand, has the shortest wavelength.
Red