INFRARED and ULTRA VIOLET Regions unseen to the human eye. Longer and Shorter Wavelength’s



We can see certain wavelength’s as our eyes perceive them as a color.


Blue Light. The visible blue light has a wavelength of about 475 nm (Nanometers). Because the blue wavelengths are shorter in the visible spectrum, they are scattered more efficiently by the molecules in the atmosphere.


This distribution of colors is called a spectrum; separating light into a spectrum is called spectral dispersion.
The human eye can see the spectrum because those specific wavelengths stimulate the retina in the human eye. The spectrum is arranged in the order of RED, ORANGE, YELLOW, GREEN, BLUE, INDIGO, and VIOLET according to the different wavelengths of light; the light in the region having the longest wavelengths is seen as RED, and the light in the region with the shortest wavelengths is seen as VIOLET. The light region which the human eye can see is called the visible light region.
If we move beyond the visible light region toward longer wavelengths, we will enter the infrared region; if we move toward shorter wavelengths, we enter the ultraviolet region. Both of these regions cannot be seen by the human eye.
Light is just one portion of the various electromagnetic waves flying through space. The electromagnetic spectrum covers an extremely broad range, from electrical and radio waves with wavelengths of several thousand kilometers to gamma rays with wavelengths of 10-13m and shorter. The visible light region is only a very small portion of this: from approximately 380 to 780nm. The light reflected from an object and which we recognize as color is (with the exception of man-made monochromatic light) a mixture of light at various wavelengths within the visible region.

 

 

Author: Bruce Swartz Astronomer

Hello I am studying Astro Physics, Astronomy and the stars. Planets, Celestial bodies like Asteroids and Comets. Deep sky (Messier Objects) I have a unique technique in editing and capturing planets both far and near. My name is Bruce Swartz. I am An Amateur Astronomer...Welcome.

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