Prepare for success on the ARRT exam and in clinical practice! Essentials of Radiographic Physics and Imaging, 4th Edition, follows the ASRT recommended curriculum and focuses on what you need to understand to safely and competently produce high-quality radiographic images. This comprehensive text gives you a foundational understanding of basic physics principles such as atomic structure, electricity and magnetism, and electromagnetic radiation. It then covers imaging principles, radiation production and characteristics, digital image quality, imaging equipment, digital image acquisition and display, image analysis, and more, linking physics to the daily practice of radiographers. New to this edition is updated information on radiation classifications, a shift in focus to SI units, and coverage of the latest advances in digital imaging.UPDATED! Content features a shifted focus to SI units, current information on radiation and classifications, and coverage of the latest advances in digi
"A first-rate thriller . . . Past and present merge in The Current, Tim Johnston's atmospheric, exquisitely suspenseful novel of two murders separated by ten years."—The Washington Post“Gripping . . .
Arnold and the other kids in Ms. Frizzle's class head underwater to explore sea life, learning about lemon sharks, nurse sharks, spiny dogfish sharks, blue sharks, and remoras.
This hilarious, illustrated middle-grade sequel, combining the humor of Diary of a Wimpy Kid with the action of The Last Kids on Earth, follows a hapless warlock-in-training as he struggles to live up to his great and terrible destiny. Remember Wick? Son of the Dark Lord, heir to the throne of black and broken glass, and next in line to be the leader of the Grim World? Well, after a major spell gone wrong, he finds himself kicked out of his own castle and shipped off as an exchange student. As if Middle Ages School wasn't hard enough already! Follow Wick through the pages of his journal as he comes up with a genius plan to defeat his foes, achieve greatness . . . and maybe even make a new friend in the process.
