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the positively charged electrode of the xray tube; server to decelerate the electrons as well as store and dissipate heat


the smallest divided part of matter that can enter into combination or chemical reactions with other atoms

Atomic number

the number of protons or positive charges in the nucleus of an atom

Atomic weight

the weight of an atom as compared to the weight of a carbon atom


the negatively charged electrode in the xray tube that serves as a sourse of electrons

Electromagnetic radiation

the movement of electric and magnetic fields through space at the speed of light


a negatively charged particle that revolves around the nucleus of an atom in well defined orbits


the capacity for performing work

Focusing cup

a metal cup that surrounds and houses the filament and is negatively charged; its purpose is to condense or focus the electrons produced by thermonic emission

Glass envelope

the glass enclosure of an xray that provides structural support for the components and maintains the vacum necessary for operation

Heat unit

the unit of measure of the heat produced in an x ray tube during the production of an x-ray

Heel effect

the uneven distribution of x-rays from the anode to the cathode and of the tube; a decreased in the x-ray intensity at the anode end of the x-ray tube


the resistance a body offers to any change in positon


the addition or subtraction of an electrons from an atom caused by bombarding matter with x-radiation or electrons


an atom of an element that has the same atomic number but more or fewer electrons


a technical factor controlling the quality of radiation produced by a radiographic or fluoroscopic unit

kinetic energy

energy which is a result of a body being in motion

Line voltage compensator

a device that senses changes in incoming voltage and allows for either automatic or manual adjustment for the changes


a substance with the power to attract ferromagnetic substances


anything that has mass and takes up space; possesses the propery of inertia


the production of milliamperage and time; a technical unit to determine the quanity of radiation produced during a radiographic exposure


the smallest part of a substance that retains all the characterics of the original substance


a particle contained within the nucleus of an atom having no charge


the central body of an atom, containing protons and electons

Potential energy

the energy inherent in a body at rest


a particle contained within the nucleus of an atom, having a positive electrical charge


the unit of radiation absorbed dose recieved by human beings or animals


a process that prevents the flow of electrons from the anode to the cathode


the radiation equivalent man; quanities radiation dose for humans


the unit of radiation exposure or intensity, quantifies radiation output or exposure


to coils of wire, insulated from one another and wraped around a single iron core whos purpose is to change voltage from one level to another


the force applied multiplied by the distance through which the force acts


1/1000 of a ampere

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