violet380-450 nm
blue450-495 nm
green495-570 nm
yellow570-590 nm
orange590-620 nm
red620-750 nm
the length of an ultra violet wave is about 0.4 nanometers
Wave length and frequency affect color in a great way. If wavelength is short it is a cool color, if it is long it is a hot color.
According to the wikipedia article about the visible spectrum the wavelengths of light we might call violet extend from 380 to 450 nanometres.
Visible light wiith the lowest frequency / longest wavelength produces the last color you can see on the red end of the spectrum. Visible light with the highest frequency / shortest wavelength produces the last color you can see on the violet end of the spectrum.
Red
400 to 800 nanometers (0.0000004 to 0.0000008 meters)
Very roughly from 380 nanometers (red) to 750 nanometers (blue/violet). The 'limits' aren't the same for all eyes.
the length of an ultra violet wave is about 0.4 nanometers
Red ... ;)
From the related links: between about 10 nanometers (most energetic Extreme Ultraviolet) to about 300 nanometers (least energetic Near Ultraviolet). Visible violet light is about 400 nanometers.
Their wave length is long, since you can see it, that means that the waves will move slower and have a longer length.
That's the last color you can see on the red end of the spectrum.
700 nanometers to 1 mm
700 nanometers to 1 mm
the last color you can see at the red end
Between 380 nm (visible as violet) to 750 nm (visible as red).
Of the visible light spectrum, that would be blue light.