Summary
Our world is largely defined by what we see and hear, but our uses for light and sound go far beyond simply seeing a photo or hearing a song. Lasers, concentrated beams of light, are powerful tools used in industry, research, and medicine, as well as in everyday electronics like DVD and CD players. Ultrasound, sound emitted at a high frequency, helps create images of a developing baby, cleans teeth, and much more. Light and Sound, Second Edition teaches how light and sound work, how they are used in our day-to-day lives, and how they can be used to learn about the universe at large.
About the Author(s)
P. Andrew Karam, Ph.D., is a scientist, writer, and educator who has devoted himself to radiation safety since 1981. He received his Ph.D. in environmental sciences from Ohio State University.
Ben P. Stein has been a professional science writer since 1992. He earned his bachelor's degree with honors at the State University of New York at Binghamton and attended New York University for journalism. Stein worked at the American Institute of Physics for 16 years.