The colour at the opposite end of the colour spectrum is violet.
The color RED has the longest wavelenth, and the color VIOLET has the shortest wavelenth. ---- Also Wavelenth is inversely propotional to frequency, so we can also say that color VIOLET has longest frequency and color RED has the shortest. VIBGYOR V-Violet (Highest Frequency, Shortest Wavelenth) I-Indigo B-Blue G-Green Y-Yellow O-Orange R-Red (Highest Wavelenth,Shortest Frequency)
The color red has the longest wavelength of all the colors in the light spectrum.
If light is subject to the Doppler effect, it will change color. The light changes color toward the lower (red) end of the spectrum or the upper (blue) end of the spectrum. Which way the color shifts depends on whether the distance between the source and the observer is increasing or decreasing. Should we find the distance is increasing, the light will be shifted toward the red end of the spectrum. This is called redshift (one word), and astronomers know this well because most all galaxies are speeding away from the Milky Way and have their light shifted toward the red end of the spectrum. If the distance between a source and observer is decreasing, the color of the light will be shifted toward the blue end of the spectrum. In either case, the amount the color is shifted will be determined by the rate the distance between the source and observer is changing. If a galaxy is moving away from the Milky Way, we'll see a shift toward red, and if another galaxy is moving away faster, will see a greater shift in the color of the light from it.
The ultraviolet spectrum is 'beyond' (ultra) the violet part of the visible spectrum, that is, beyond the short end of the wavelength range. The infrared spectrum is 'within' (infra) the long end of the wavelength range. The two terms have nothing to do with color, which defines the visible spectrum between violet and red.
Red
A spectrum goes from red at the low frequency end to violet at the high frequency end.
rojo
warm is red and cool is blue
The longest visible wavelengths are thoseat the red end of the spectrum (rainbow).
The color red is the longest wavelength in the visible light spectrum because the less energy a wave carries the longer the wavelength and red carries the least energy of all the colors in the visible spectrum
That's the last color you can see on the red end of the spectrum.
The color red has the lowest frequency of the visible light - violet has the highest
the last color you can see at the red end
A deeper red on the low end of the color spectrum.
red and violet spectrum
A "redshift" is a change in the light observed from a source to longer wavelengths. That's a change from the blue end of the spectrum to the red end of the spectrum. A "blueshift" is the opposite. It's a change towards shorter wavelengths.
Hot colors are on the red end of the spectrum. Green is on the blue end where all the cool colors hang out.