Beyond the violet end of the visible spectrum is light of shorter wavelengths and higher energies. Our eyes cannot detect this light either. This area of the electromagnetic spectrum includes ultraviolet light, x-rays, and gamma rays. Ultraviolet light extends from the violet region of the visible spectrum, down to about 10 nm.
Following Herschel's discovery of infrared light, Johann Ritter discovered ultraviolet radiation in By observing the effects of radiation from the sun on silver chloride, Ritter determined that radiation existed beyond the visible violet. X-rays have wavelengths shorter than about 10 nm, but longer than about 0.
X-rays were discovered in by Wilhelm Roentgen, a physicist, while looking for cathode rays from glass vacuum tubes.
Gamma rays have the shortest wavelengths of the electromagnetic spectrum, and the highest energies. Gamma rays have such short wavelengths, that astronomers usually discuss them in terms of energy. Gamma rays have energies greater than about keV keV stands for kilo-electron volt.
There are eV in 1 keV. This means that it is correct to talk about the energy of an X-ray or the wavelength of a microwave or the frequency of a radio wave. The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays. Hope I helped :.
Related questions Question d7f Question d7f6d. Why is light the same thing as electromagnetic radiation? Why is electromagnetic radiation a transverse wave? Red light waves have wavelengths around nanometers nm , while blue and purple light have even shorter waves with wavelengths around or nm. Some radio waves, another type of electromagnetic radiation, have much longer waves than light, with wavelengths ranging from millimeters to kilometers. Sound waves traveling through air have wavelengths from millimeters to meters.
Low-pitch bass notes that humans can barely hear have huge wavelengths around 17 meters and frequencies around 20 hertz Hz.
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