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14 Cards in this Set
- Front
- Back
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define xrays
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electromagnetic radiation with shorter wavelength than visible light
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anode
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postively charged electrode
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cathode
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negatively charged electrode
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electromagnetic radiation
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method of transporting energy through space-- distinguished by wavelength, freq, & energy
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the 2 charactersitics of electromagnetic radiation
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particles & waves
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4 main components of an atom
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proton
neutron electron nucleus |
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electrons
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negatively charged particles that travel around the nucleus
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xrays with a _______ wavelength have a ______ frequency
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shorter, higher
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what penetrates farther?xrays with shorter wavelengths or longer wavelengths?
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shorter
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xray beam is composed of:
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bundles of energy that travel in a wave
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7 physical properties of xrays
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1- wavelength is variable & is related to energy of radiation
2- travel is in a straight line 3- xrays can penetrate materials that absorb or reflect light 4- certain substances fluoresce 5- xrays produce an invisible image on photgraphic film 6- xrays have ability to excite or ionize atoms 7- xrays cause biologic changes in living tissue |
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xrays are generated when:
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fast-moving electrons collide with any matter
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the collision of electrons at the anode in an xray tube results in ______ & ______
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x-radiation, heat
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the man who discovered xrays
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Wilhem Conrad Roentgen
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