Electromagnetic Spectrum - Introduction - Imagine the Universe!
网页2014年11月14日 · Radio waves, gamma-rays, visible light, and all the other parts of the electromagnetic spectrum are electromagnetic radiation. Electromagnetic radiation can be described in terms of a stream of mass-less particles, called photons , each traveling in a wave-like pattern at the speed of light .
The Electromagnetic Spectrum - Imagine the Universe!
网页2017年7月21日 · The Electromagnetic Spectrum. As it was explained in the Introductory Article on the Electromagnetic Spectrum, electromagnetic radiation can be described as a stream of photons, each traveling in a wave-like pattern, carrying energy and moving at …
Spectra and What They Can Tell Us - Imagine the Universe!
网页2014年11月20日 · But the electromagnetic spectrum encompasses more than just optical light. It covers all energies of light, extending from low-energy radio waves, to microwaves, to infrared, to optical light, to ultraviolet, to very high-energy X-rays and gamma rays.
Background - Electromagnetic Radiation - Imagine the Universe!
网页2015年5月7日 · The entire range of energies of light, including both light we can see and light we cannot see, is called the electromagnetic spectrum. It includes, from highest energy to lowest: gamma-rays, X-rays, ultraviolet , optical, infrared , microwaves, and radio waves.
Observatories Across the Electromagnetic Spectrum - Imagine the …
网页2014年11月18日 · Here we briefly introduce observatories used for each band of the EM spectrum. A sample of telescopes (operating as of February 2013) operating at wavelengths across the electromagnetic spectrum. Observatories are placed above or below the portion of the EM spectrum that their primary instrument (s) observe.
Discovering the Electromagnetic Spectrum - Imagine the Universe!
网页2014年12月22日 · In 1887 Heinrich Hertz demonstrated the existence of the waves predicted by Maxwell by producing radio waves in his laboratory. It took a bit longer for scientists to discover the higher-energy (shorter wavelength) light in …
Background: Introduction to Spectroscopy - Imagine the Universe!
网页2021年10月14日 · But the electromagnetic spectrum encompasses more than just optical light - it covers all energies of light extending from low-energy radio waves, to microwaves, to infrared, to optical light, to ultraviolet, to very high-energy X- and gamma-rays.
Electromagnetic Spectrum Cool Fact - Imagine the Universe!
网页2013年11月5日 · It is important to understand that we are not talking about a difference in what radiation IS, but only in how it behaves. Low energy photons (such as radio ) behave more like waves, while higher energy photons (such as X-rays ) behave more like particles.
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网页The highest energy, shortest wavelength electromagnetic radiations. Usually, they are thought of as any photons having energies greater than about 100 keV. (It's "gamma-ray" when used as an adjective.)
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网页Electromagnetic radiation which has the lowest frequency, the longest wavelength, and is produced by charged particles moving back and forth; the atmosphere of the Earth is transparent to radio waves with wavelengths from a few millimeters to about twenty meters.