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Questions and Answers
Which type of electromagnetic waves have the lowest photon energy?
Which type of radiation is able to ionize atoms?
Which type of radiation is nonionizing?
Which electromagnetic waves have the highest photon energies?
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Which electromagnetic waves can be emitted and received by antennas, and pass through the atmosphere, foliage, and most building materials?
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Who was the first to use the term spectrum for the range of colours that white light could be split into with a prism?
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In what year did Thomas Young measure the wavelength of a light beam with his two-slit experiment?
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Who discovered infrared radiation in 1800?
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What type of light ray did William Herschel theorize was responsible for the temperature change beyond red?
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Who discovered 'chemical rays' which were later renamed ultraviolet radiation?
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During which decade did James Clerk Maxwell develop four partial differential equations (Maxwell's equations) for the electromagnetic field?
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Who noticed that the polarization of light traveling through a transparent material responded to a magnetic field?
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Who discovered that electric currents produce magnetic fields?
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Who recognized that light travelled in straight lines and studied some of its properties including reflection and refraction?
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Which band of the electromagnetic spectrum has electromagnetic waves with the longest wavelengths?
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What is the characteristic of gamma rays in terms of photon energy and wavelength?
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What is the term used for electromagnetic waves that are able to ionize atoms, causing chemical reactions?
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Which type of radiation is nonionizing, meaning their photons do not have sufficient energy to ionize atoms?
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Which band of the electromagnetic spectrum can be emitted and received by antennas, and pass through the atmosphere, foliage, and most building materials?
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What is the distinguishing characteristic of visible light and radiation of longer wavelengths?
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Who was the first to use the term 'spectrum' for the range of colours that white light could be split into with a prism?
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Who was the scientist who conclusively demonstrated that light was a wave?
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Who discovered infrared radiation in 1800?
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Who noticed that the polarization of light traveling through a transparent material responded to a magnetic field?
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Who discovered 'chemical rays' which were later renamed ultraviolet radiation?
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Who recognized that light traveled in straight lines and studied some of its properties including reflection and refraction?
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Who theorized that the highest temperature beyond red was due to 'calorific rays', a type of light ray that could not be seen?
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Who developed four partial differential equations (Maxwell's equations) for the electromagnetic field during the 1860s?
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Who discovered that electric currents produce magnetic fields (Oersted's law)?
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Who linked light to electromagnetism in 1845 by noticing that the polarization of light traveling through a transparent material responded to a magnetic field?
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