Ch 1-7
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| Matter is measured in | show 🗑
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| show | atoms and molecules
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| The formula ___ is the basis for the theory that led to nuclear power | show 🗑
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| show | radiowaves, microwaves, ultraviolet, infrared, visible light, xray, gamma
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| A moving object has | show 🗑
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| The removal of an electron from an atom is called | show 🗑
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| show | removing
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| show | electromagnetic energy
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| show | diagnostic xray
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| We are exposed to 20-90 mR/yr of ionizing radiation from | show 🗑
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| The basic quantities measured in mechanics are | show 🗑
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| show | grays
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| show | radiation protection
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| ALARA means | show 🗑
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| show | low energy xrays
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| The term atom was first used by the | show 🗑
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| show | John Dalton
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| The smallest particle that has the properties of an element is an | show 🗑
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| show | Bohr model of the atom
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| show | neutrons, protons, electrons
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| The chemical element is determined by the number of | show 🗑
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| An atom in a normal state has an electrical charge of | show 🗑
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| The binding energies or energy levels of electrons are represented by their | show 🗑
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| show | isotope
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| show | molecules
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| The losses or gain of one of more electrons is an | show 🗑
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| show | 2n^2
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| A neutral atom has the same number of | show 🗑
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| show | K
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| show | Z
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| The atomic number equals the number of | show 🗑
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| The difference between xrays and gamma rays is their | show 🗑
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| The alpha particle is the least penetrating form of | show 🗑
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| The properties of photons are | show 🗑
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| The smallest quantity of any type of electromagnetic radiation is a | show 🗑
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| The velocity of all electromagnetic radiation is | show 🗑
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| The rate of the rise and fall of a sine wave is called | show 🗑
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| show | velocity
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| If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, the frequency must decrease by | show 🗑
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| The intensity of radiation decrease in _______ to the square of the distance of the object from the source | show 🗑
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| show | attenuation
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| The intensity of radiation on an object is reduced with distance because the radiation is | show 🗑
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| show | I millilumen
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| show | 30-150 kVp
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| show | frequency
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| Xray are usually identified by their | show 🗑
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| The lowest energy range on the electromagnetic spectrum is | show 🗑
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| Gamma rays are produced in the | show 🗑
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| show | shortest wavelengths
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| show | electron
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| show | electrons only
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| show | direct current
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| When an electrical potential (voltage) is applied to a conductor, both a | show 🗑
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| show | sinusoidal line
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| show | direct current
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| show | generator
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| Ohm's law formula is | show 🗑
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| Electrical power is measured in | show 🗑
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| Rubber and glass are ____ because they do not conduct electricity | show 🗑
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| show | magnetic domain
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| In the United States, alternating current goes through a complete cycle every | show 🗑
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| The Si unit of magnetic field strength is the | show 🗑
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| show | magnetic field
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| show | repel; attract
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| show | diamagnetic
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| The magnetic intensity of an electromagnetic is greatly increased by the addition of an | show 🗑
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| The three main parts of an xray imaging system are the | show 🗑
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| The operating console contains circuits that are | show 🗑
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| Variation in power distribution to xray machine are corrected by | show 🗑
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| The first component in the xray circuit is the | show 🗑
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| show | one winding
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| The ____ circuit provides electrons for the xray tube. | show 🗑
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| show | electronic timer
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| show | image receptor
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| show | 500-1000 times
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| show | cathode to anode
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| With half-wave rectification the current flows through the xray tube during the _____ part of the cycle | show 🗑
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| Full-wave rectified, three-phase units provide an xray beam at ___ pulses per second | show 🗑
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| Voltage across the xray tube is most constant with | show 🗑
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| show | high frequency generators
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| show | 100%
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| show | cost
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| The xray generator with the lowest power rating is the _____ imaging system | show 🗑
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| show | ceiling support system
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| show | tungsten
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| show | cathode
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| The cathode holds the | show 🗑
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| show | tungsten vaporization
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| The filament is made of | show 🗑
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| show | thermonic
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| show | stator
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| When electron bombard the target ___ of their energy is converted to heat. | show 🗑
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| The target of the rotating anode is usually coated with a | show 🗑
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| The ___ is the source of radiation in the xray tube | show 🗑
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| show | focal spot
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| show | 10,000 rpm
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| show | cathode
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| show | cathode
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| Tube ____ can occur from long exposures | show 🗑
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| show | outside
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| ___ or ___ radiation is produced from rebounding electrons | show 🗑
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| The heel is caused by the ___ of the anode | show 🗑
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| show | actual focal spot
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| show | pitting
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| Projectile electrons travel from the filament to the | show 🗑
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| During an exposure, most of the kinetic energy of the projectile electrons is converted to | show 🗑
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| show | tube current
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| show | increases
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| show | 1%
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| Electrons interaction at the inner-shell of the target atoms produce | show 🗑
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| The useful characteristic xrays from tungsten are | show 🗑
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| Characteristic K-shell xrays have an effective energy of | show 🗑
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| show | bremsstrahlung
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| At 55kVp ___ of the xrays produced are bremsstrahlung | show 🗑
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| show | nucleus
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| show | energy
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| show | single phase
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| A 15% increasing kVp is equivalent to doubling the | show 🗑
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