We present to your attention the second book from the series we compiled of the once widely known works of the popularizer of science and teacher Ya. I. Perelman. The first in the series was the book “For Young Mathematicians. Fun problems." Work "For young physicists. Experiences and Entertainment" is intended for very young nature researchers. According to Ya. I. Perelman, “...what the reader can glean from it is not yet physics, but only the threshold to it.” The book you are holding in your hands will help broaden your child’s horizons, will allow you to enrich yourself with new knowledge about nature and awakens the ability to think creatively. Here are easy-to-perform experiments that can be done with objects around us. Funny stories, fascinating tasks, paradoxical comparisons will help to instill interest in understanding the world around us. The material is written in the genre of entertaining science, contains a storehouse of useful theoretical and practical knowledge and is intended for secondary school students and their parents, for teachers and all those who have retained the ability to be surprised by the world around us. The book presents two more works by the author: “Don’t believe your eyes!” and “Fun with matches.”