By Robert A. Fosbinder BA RT(R), Denise Orth MS RT (R)(M)
Lippincott Williams & Wilkins is proud to introduce necessities of Radiologic technological know-how, a middle, complete textbook for radiologic know-how scholars. targeting the the most important parts and minimizing extraneous content material, this article will aid arrange scholars for achievement at the American Registry of Radiologic Technologists exam in Radiography and past into perform. subject matters coated comprise radiation safeguard, gear operation and qc, picture creation and assessment, and sufferer care. this can be a key and the most important source for radiologic expertise courses, concentrating on the main suitable details and providing instruments and assets to scholars of a number of studying forms. those contain a whole suite of ancillary items, quite a few pedagogical positive factors embedded within the textual content, and a powerful specialise in the sensible software of the thoughts provided.
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Extra resources for Essentials of Radiologic Science
These force fields are also called lines of force, lines of flux, or the magnetic field. These magnetic field lines flow from the north pole to the south pole on the outside of the magnet. Within the magnet the field lines flow from the south pole to the north pole. The number and concentration of field lines will determine the strength of the magnet; the stronger the magnetic field, the greater the number of field lines and the more concentrated the field lines are at the poles. Breaking a magnet in half produces two smaller magnets, each with a north and a south pole.
An electron will repel a proton C. an electron will repel an electron D. a neutron will repel a neutron 3. Which statement is not one of the laws of magnetism? A. Like poles repel B. Unlike poles attract C. Stronger magnets have larger poles D. The force between magnets decreases with the square of the distance between them 6. The field lines of a magnet flow _____________ to the magnet. A. parallel B. perpendicular C. either parallel or perpendicular D. neither is correct 7. A spin magnetic moment is best described as A.
When the strong magnetic flux lines are removed, the dipoles in the iron bar will return to their original random state. This process is called magnetic induction and it will work with any ferromagnetic material. 11. The Earth is a giant magnet and like all other magnets, it has two magnetic poles, one north and one south. Electrostatics is the study of stationary or resting electric charges. Another name for stationary charges is static electricity. As we discussed in Chapter 1, the concept of electric charges can be seen at the atomic level, in positively charged protons and negatively charged electrons.