Bushong Penguins
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| 🇬🇧 | 🇬🇧 |
| Common cause of tube failure. | TUNGSTEN VAPORIZATION WITH DEPOSITION ON THE INSIDE OF THE GLASS |
| The ability to do work. | ENERGY |
| Is the transfer of energy. | RADIATION |
| To provide an x-ray beam that is satisfactory for imaging, you must supply the x-ray tube with a _____ and _______. | HIGH VOLTAGE AND AN ELECTRIC CURRENT |
| Emerged as a medical specialty because of the Snook transformer and the Coolidge x-ray tube. | RADIOLOGY |
| ALARA stands for | AS LOW AS REASONABLY ACHIEVABLE |
| The velocity of light is constant and is sybolized by _____. | C: c = 3 × 10^8 m/s. |
| Law: A body will remain at rest or will continue to move with constant velocity in a straight line unless acted on by an external force. | NEWTON'S FIRST LAW: INERTIA |
| The force (F) that acts on an object is equal to the mass (m) of the object multiplied by the acceleration (a) produced. | NEWTON'S SECOND LAW: FORCE |
| Is the mechanical transfer of "hot" molecules in in a gas or liquid from one place to another. | CONVECTION |
| Is the transfer of heat by the emission of infrared radiaiton. | THERMAL RADIATION |
| Is the unit of radiation exposure or intensity. | Air kerma (Gya) |
| Is the unit of Radiation Absorbed Dose. | Gray (Gyt) |
| Is the unit of radioactivity. | Becquerel (Bq) |
| The fundamental particles of an atom are: | ELECTRON, PROTON, AND NEUTRON |
| In their normal state, atoms are electrically ____; the elctric charge on the atom is _____. | NEUTRAL, ZERO |
| What is the force that keeps the electron in orbit? | CENTRIPETAL FORCE |
| The smallest particle of an element is ______. The smallest particle of a compound is ______. | AN ATOM, A MOLECULE |
| This results in emission of alpha particles, beta particles, and usually gamma rays. | RADIOACTIVE DECAY |
| Is the time required for a quantity of radioactivity to be reduced to one-half its original value. | HALF-LIFE OF A RADIOISOTOPE |
| 3.3 half lives = _____ life | 1 TENTH LIFE |
| Is a quantum of electromagnetic energy. | X-RAY PHOTON |
| DIRECTLY PROPORTIONAL or INVERSELY PROPORTIONAL: At a given velocity, wavelength and frequency are ______. | INVERSELY PROPORTIONAL |
| Includes the entire range of electromagnetic energy. | ELECTROMAGNETIC SPECTRUM |
| DIRECTLY PROPORTIONAL or INVERSELY PROPORTIONAL: The energy of a photon is _____ proportional to its frequency. | DIRECTLY PROPORTIONAL |
| ______ is identified by wavelength, ______ is identified by frequency, and ______ are identified by energy. | VISIBLE LIGHT, RADIOFREQUENCY, X-RAYS |
| Interact with matter most easily when the matter is approx. the same size as the photon wavelength. | PHOTONS |
| Behaves like a wave. | VISIBLE LIGHT |
| Is the reduction in intensity that results from scattering and absorption. | ELECTROMAGNETIC ENERGY ATTENUATION |
| DIRECTLY RELATED or INVERSELY RELATED: Electromagnetic energy (radiation) intensity is _____ related to the square of the distance from the source. | INVERSELY RELATED |
| Can be applied to distances greater than seven times the longest dimension of the source. | INVERSE SQUARE LAW |
| Is a discrete bundle of energy. | X-RAY PHOTON |
| DIRECTLY PROPORTIONAL or INVERSELY PROPORTIONAL: The energy of a photon is ____ proportional to its frequency. | DIRECTLY PROPORTIONAL |
| Is the study of stationary electric charges. | ELECTROSTATIC |
| Can be created by contact, friction, or induction. | ELECTRIFICATION |
| Unlike charges _____; like charges _____. | ATTRACT, REPEL |
| The unit of electric potential. | Volt (V) |
| The study of electric charges in motion. | ELECTRODYNAMICS |
| Is a material that under some conditions behaves as an insulator and in other conditions behaves as a conductor. | SEMICONDUCTOR |
| INCREASING or DECREASING: _______ electric resistance results in a reduced electric current. | INCREASING |
| Contains elements that are connected at their ends rather than lying in a line along a conductor. | PARALLEL CIRCUIT |
| Any charged particle in motion creates a ______. | MAGNETIC FIELD |
| Is the ability of a material to attract the lines of magnetic field intensity. | MAGNETIC PERMEABILITY |
| All matter can be classified according to the manner in which it interacts with a/an _______. | EXTERNAL MAGNETIC FIELD |
| The degree to which a material can. be magnetized is its _____. | MAGNETIC SUSCEPTIBILITY |
| Can be made into magnets by induction. | FERROMANETIC OBJECTS |
| Is proportional to the product of the magnetic pole strengths divided by the square of the distance between them. | MAGNETIC FORCE |
| The SI unit of magnet field strength is the _____. An older unit is the ____. | TESLA (T), GAUSS (G) |
| Is measured in units of joule per coulumb, or volt. | ELECTRIC POTENTIAL |
| Any charge in motion induces a _____. | MAGNETIC FIELD |
| A coil of wire is called _____. | SOLENOID |
| Is a current-carrying coil of wire wrapped around an iron core, which intensifies the induced magnetic field. | ELECTROMAGNET |
| An electric current is induced in a circuit if some part of the circuit is in a changing magnetic field. | ELECTROMAGNETIC INDUCTION |
| Varrying magnetic field intensity induces a/an _____. | ELECTRIC CURRENT |
| A/An _______ powers the rotating anode of an x-ray tube. | INDUCTION MOTOR |
| Has one winding and varies both voltage and current. | AUTOTRANSFORMER |