Term
| the crystals Dr. Wilhem Conrad Roentgen used to produce the first x-ray were... |
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Term
| the instantaneous production of light resulting from the interaction of some type of energy is called... |
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| the world's first radiograph was a hand image of... |
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| the state that attempted to enact legislation to ban x-ray producing devices in opera glasses was... |
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Term
| the first indications of the damaging biologic effects from x-rays were... |
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Definition
| redness and burns of the skin |
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Term
| the most energetic electromagnetic radiation on the electromagnetic spectrum is... |
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Definition
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Term
| an angstrom is a metric unit of length equal to ___ _____ ________ of a meter |
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Definition
| one ten billionth or 10 (to the negative tenth power) |
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Term
| the energy of an individual photon is measured in units of... |
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Definition
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| x-rays can cause chemical and biological changes in living tissue because of the process of... |
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| in what year were x-rays discovered? |
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Definition
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| in what year were some of the biologically damaging effects of x-rays discovered? |
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Term
| x-rays were discovered in experiments dealing with electricity and ____? |
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Definition
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Term
| x-rays were discovered when they caused a barium platinocyanide- coated plate to ____? |
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| x-radiation is part of which spectrum? |
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| x-rays have a dual nature, which mean that they behave like both _____ and ____. |
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| the wavelength and frequency of x-rays are ____ related. |
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| x-rays have _____ electric charge. |
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| x-rays have what type of mass? |
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Term
the x-ray beam used in diagnostic radiography can be described as being _______.
a. homogenous b. monoenergetic c. polyenergetic d. scattered |
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Term
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Definition
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| how fast does an x-ray travel? |
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Definition
| at the speed of light in a vacuum |
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Term
| can x-rays be optically focused? |
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Definition
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Term
| what range can x-rays be produced in? |
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Definition
| anywhere from 30kVp to 150 kVp |
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Term
| can an x-ray zig zag or be diverted in another direction? |
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Definition
| no, they only travel in straight lines |
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Term
| what do x-rays do to the image receptor as well as some other substances? |
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Definition
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| what will x-rays do to photographic film? |
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Definition
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Term
| do x-rays penetrate through the human body? |
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Definition
| yes, based on the energy of the x-rays and on the composition and thickness of the tissues being exposed |
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Term
| can x-rays be absorbed or scattered by tissues in the human body? |
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Definition
| yes, depending on the energy of the photon |
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Term
| can x-rays produce secondary radiation? |
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Definition
| yes, when x-rays are absorbed as a result of specific type of interaction with matter (photoelectric effect), a secondary or characteristic photon is produced |
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Term
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Definition
c= the speed of light
λ= lambda, wavelength (distance between 2 successive crests or troughs). measured in angstroms
ν= nu, # of waves passing a given point per given unit of time. |
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Term
| x-rays as particles can be called... |
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Definition
photons or quanta (quantum- singular)
small, discrete bundles of energy.
measured in eV electron volts |
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Term
| electromagnetic radiation |
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Definition
| refers to radiation that has both electrical and magnetic properties |
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Term
| what type of tube was used by Roentgen when he discovered x-rays? |
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