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Relativity and Quantum Mechanics: Principles of Modern Physics

Have you ever wondered why it seems like you are standing still – even though you are on a planet that is moving through space? Albert Einstein wondered why. Do you know what the famous equation E=mc2 means? Einstein could have explained it! Do you know why black holes exist? In this engaging book, author Paul Fleisher answers these and many more questions as he looks at the laws of relativity and quantum mechanics. With easy-to-understand concepts and experiments, readers are introduced to the basic principles of modern physics in an exciting way.This edition of Paul Fleisher’s Secrets of the Universe has been fully revised by the author and features all of the original illustrations by Patricia Keeler.

100 pages, Paperback

First published January 1, 2001

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Paul Fleisher

55 books3 followers

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5 stars
26 (35%)
4 stars
25 (34%)
3 stars
19 (26%)
2 stars
1 (1%)
1 star
2 (2%)
Displaying 1 - 11 of 11 reviews
Profile Image for Bernie4444.
2,527 reviews12 followers
December 26, 2022
Something practical

This book is part of the “Secrets of the Universe” series.

Reading the introduction makes you want to regurgitate. Even though the target reader grade is sitting at nine, the author, Paul Fleisher, talks down to the reader in the most fundamental way.

After you get past the introduction it is Relativity and Quantum Mechanics relatively without the math. You will find the book more of a history of how our concept of light and the makeup of the atom changes down through the ages. He sights key discoveries and concepts. And drops names such as Niels Bohr, Albert Einstein, Max Plank, and Werner Heisenberg.

Before you get a chance to yawn this is one of the few books that has practical experiments to prove the laws and not just take my word for its theories. Try the Red or Blue light on a motion detector that proves that “the shorter the wave = the higher the energy.”

The information is split into logical and short chapters:
1. Relativity
2. Quantum Mechanics
3. Conservation of Mass/Energy
4. The Uncertainty Principle

Included are references to further reading and websites to visit.

246 reviews40 followers
June 23, 2022
This is the first one in the series that left me a bit confused. I think I’ll need to do some more studying before we read this in term 3!

Pre-read of 2022-2023 educational year.
Profile Image for Bethanyanne.
240 reviews2 followers
April 13, 2026
We read this one last for homeschool year 7 and I’m glad- it was the hardest book in the series.
Profile Image for Brit Chhangur.
242 reviews15 followers
December 19, 2025
Pre-read for AO year 7. These books make these concepts so clear. The illustrations (both drawings/sketches and word-pictures) make complicated laws understandable and the experiments are easy to implement. This particular book has been the most difficult of the series so far, and I don't think there were any experiments!
846 reviews2 followers
June 8, 2023
Really great series, with clear explanations and good illustrations of the experiments discussed. 13yo looked forward to reading these.
Profile Image for Bikerider99.
209 reviews
August 8, 2023
Highly recommended as an introduction to this complicated field of science. Good examples provided to illustrate the concepts.
Profile Image for s.
138 reviews2 followers
Read
February 4, 2025
i learned most of this in chem already but still enjoyable
Profile Image for Robert Davis.
765 reviews65 followers
October 24, 2011
An elementary introduction to the theories and pioneers of physics.
Profile Image for Aaron Wong.
563 reviews7 followers
October 29, 2013
Makes the imposingly difficult easy to understand with elegant and inspired analogies.
Profile Image for Carolyn Page.
819 reviews38 followers
December 20, 2018
It wasn't too hard for me to read! I'm not dumb, but I'm more of a right brain than a left brain. Explained these concepts and principles in clear, simple terms.
Displaying 1 - 11 of 11 reviews