A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Definition: A device used to measure the rate of radioactive decay. A type of radiation detector.
By Anne Marie Helmenstine, Ph.D., About.com Guide
Tips that will help finance your education, excel in the classroom, and advance your career. More >
Being well prepared is the first step; here are more essential suggestions. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.