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The Electromagnetic Spectrum Poster - Educational Science Teaching Resource (A1 Size 59.4 x 84.1 cm)

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Ultra high frequency. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Ultra_high_frequency. License: CC BY-SA: Attribution-ShareAlike

Radio waves. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Radio_waves. License: CC BY-SA: Attribution-ShareAlike Gamma rays from radioactive decay are defined as gamma rays no matter what their energy, so that there is no lower limit to gamma energy derived from radioactive decay. Gamma decay commonly produces energies of a few hundred keV, and almost always less than 10 MeV. Since it is possible to carry more information per unit time on high frequencies, microwaves are quite suitable for communications devices. Most satellite-transmitted information is carried on microwaves, as are land-based long-distance transmissions. A clear line of sight between transmitter and receiver is needed because of the short wavelengths involved.x-ray crystallography. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/x-ray%20crystallography. License: CC BY-SA: Attribution-ShareAlike Heat is energy in transient form that flows due to temperature difference. Unlike heat transmitted by thermal conduction or thermal convection, radiation can propagate through a vacuum. Radio frequency. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Radio_frequency. License: CC BY-SA: Attribution-ShareAlike

This figure shows the visible part of the spectrum, together with the colors associated with particular pure wavelengths. Red light has the lowest frequencies and longest wavelengths, while violet has the highest frequencies and shortest wavelengths. The microwave region of the electromagnetic (EM) spectrum is generally considered to overlap with the highest frequency (shortest wavelength ) radio waves. The electromagnetic spectrum is a range of wavelengths of electromagnetic radiation. From long to short wavelength, the EM spectrum includes radio waves, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays.Most UV is non- ionizing radiation, though UV with higher energies (10-120 nm) is ionizing. All UV can have harmful effects on biological matter (such as causing cancers) with the highest energies causing the most damage. Boundless. Provided by: Boundless Learning. Located at: www.boundless.com//physics/definition/fm-radio-waves. License: CC BY-SA: Attribution-ShareAlike This poster set can be used wherever teaching is taking place, perfect for use at home as well as the classroom. Simply print out and display to create an informative Electromagnetic Spectrum Information board, or use on screens to engage students with key information. Our posters help students learn essential information no matter where they might be learning. OpenStax College, College Physics. December 19, 2012. Provided by: OpenStax CNX. Located at: http://cnx.org/content/m42444/latest/?collection=col11406/1.7. License: CC BY: Attribution The microwave portion of the electromagnetic spectrum can be subdivided into three ranges listed below from high to low frequencies: extremely high frequency (30 to 300 GHz), super high frequency (3 to 30 GHz), and ultra-high frequency (300 MHz to 3 GHz).

thermal agitation: The thermal motion of atoms and molecules in any object at a temperature above absolute zero, causing them to emit and absorb radiation. Visible wavelengths pass through the “optical window”, the region of the electromagnetic spectrum which allows wavelengths to pass largely unattenuated through the Earth’s atmosphere (see opacity plot in. An example of this phenomenon is that clean air scatters blue light more than red wavelengths, and so the midday sky appears blue. Radio waves are a type of electromagnetic (EM) radiation with wavelengths in the electromagnetic spectrum longer than infrared light. They have have frequencies from 300 GHz to as low as 3 kHz, and corresponding wavelengths from 1 millimeter to 100 kilometers. Like all other electromagnetic waves, radio waves travel at the speed of light. Naturally occurring radio waves are made by lightning or by astronomical objects. Artificially generated radio waves are used for fixed and mobile radio communication, broadcasting, radar and other navigation systems, communications satellites, computer networks and innumerable other applications. Different frequencies of radio waves have different propagation characteristics in the Earth’s atmosphere—long waves may cover a part of the Earth very consistently, shorter waves can reflect off the ionosphere and travel around the world, and much shorter wavelengths bend or reflect very little and travel on a line of sight. ozone layer. Provided by: Wiktionary. Located at: en.wiktionary.org/wiki/ozone_layer. License: CC BY-SA: Attribution-ShareAlike OpenStax College, College Physics. April 28, 2014. Provided by: OpenStax CNX. Located at: http://cnx.org/content/m42444/latest/?collection=col11406/1.7. License: CC BY: AttributionFM Radio: Frequency modulation for FM radio. (a) A carrier wave at the station’s basic frequency. (b) An audio signal at much lower audible frequencies. (c) The frequency of the carrier is modulated by the audio signal without changing its amplitude. Visible Spectrum: A small part of the electromagnetic spectrum that includes its visible components. The divisions between infrared, visible, and ultraviolet are not perfectly distinct, nor are those between the seven rainbow colors. As stated above, while infrared radiation is commonly referred to as heat radiation, only objects emitting with a certain range of temperatures and emissivities will produce most of their electromagnetic emission in the infrared part of the spectrum. However, this is the case for most objects and environments humans encounter in our daily lives. Humans, their surroundings, and the Earth itself emit most of their thermal radiation at wavelengths near 10 microns, the boundary between mid and far infrared according to the delineation above. The range of wavelengths most relevant to thermally emitting objects on earth is often called the thermal infrared. Many astronomical objects emit detectable amounts of IR radiation at non-thermal wavelengths. optical window. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/optical%20window. License: CC BY-SA: Attribution-ShareAlike

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