This is the fourth volume (266 pages - edition 25.3 of November 2012) of the Motion Mountain physics text and introduces quantum physics. It provides a simple, modern and surprising introduction to quantum effects in matter and light, with many figures and photographs.
The text, printed in black and white, is written in an easy style, uses little mathematics, and is accessible to undergraduates, teachers and anybody who is interested in the precise description of nature. The colour pdf, with all the embedded films, can be downloaded for free at the www.motionmountain.net website.
Enjoy the reading!
