If a large rock had collapsed in a desert or a tree had fallen in the heart of a distant forest several hundred miles away from living beings, would it have made a sound upon its fall? Different people will give different answers to this ancient question. Objectively, some will say that a sound would have been heard because sound does not exist only in the mind of the listener. Subjectively, some would say that a sound requires someone to listen to it. What is correct? Is this complex answer related to the essence of sound? It's All in the Sound investigates the phenomenon of sound and tries to understand it and answer, among other things, the above questions. It was written to meet the needs of students and teachers, with a desire to update the teaching of physics and fill the shortage of textbooks in this field, which is associated with teaching the subject of sound waves. The gradual development of the concept of sound is discussed in the book by building structured experimental illustrations, as well as mathematical expressions describing this miraculous phenomenon. The illustrations were chosen so that a curious reader could repeat most of the experiments in a home environment without the need for special laboratory equipment. Even for readers unfamiliar with the basics of physical mathematics that describe sound, this book may provide a unique experience and open up a new window to understanding physics.

The book takes the reader on a journey of discovery ranging from the planets of our solar system to stars and distant solar systems in the Milky Way, our home galaxy, and beyond to the ends of the universe. It proposes a reader-friendly introduction to astrophysics and the physics of stars and planets, accompanied by over one hundred illustrations. The book explains concepts, distances and phenomena from other worlds, very different from our everyday experience. Throughout its journey through the universe the book introduces the science of astrobiology: the search for biological life in space. It also accompanies the course "Astrobiology and Life in the Universe" presented by the author and recorded for the benefit of the public in the "Cornerstones" program of the Hebrew University. The book deals with topics that have received widespread media coverage in recent years, such as NASA's research missions to Mars and their Kepler and James Web space telescopes. While the Kepler mission led in 2010-2015 to a breakthrough in discovering numerous worlds suitable for life outside the Solar System, James Web, whose launch is expected in 2021, will provide to humanity for the first time the ability to detect signs of life in these worlds.

This book is intended for a varied audience - undergraduates in the exact, natural sciences as well as those interested in basic Quantum mechanics. In addition, certain chapters are intended for graduate students who may wish to incorporate the material presented in this book into their research. Together, the volumes contain in access of a hundred solved problems in varying degrees of difficulty, which assist in understanding Quantum Mechanics and its applications.

The fourth book in the series of Understanding Physics describes three important topics. Fluids – which include both liquids and gases – play a central role in our daily lives. We breathe and drink them, and a rather vital fluid circulates in the human cardiovascular system. The Earth's oceans and atmosphere consist of fluids. Waves – deals with many phenomena like sound waves that carry our messages from our vocal cords to the ears of our friends. Electromagnetic waves carried through optic fibers or through the atmosphere, allow communication with satellites. The book presents: oscillations and harmonic motions, mechanical waves and sound waves. Thermodynamics – heat theory development is one of humankind's most profound intellectual achievements. Understanding thermodynamic principles was fundamental for steam engines that powered the industrial revolution. The book deals with the first law of the thermodynamics, the kinetic theory of gases and the second law of thermodynamics. As in former volumes of Understanding Physics – this book contains clear explanations from basics phenomena to complicated models. It allows readers to examine their understanding by reading exercises and examples. Many figures, diagrams and photos facilitate discovery with this book and convert the experience of learning into a vivid and plausible encounter. The book is based on Fundamental of Physics by David Halliday, Robert Resnick and Jearl Walker.

Magnetism and Optics is a second book in the series of three. This book is built on the foundations of the 6th Edition of Halliday, Resnick, and Walker’s Fundamentals of Physics. One of primary goals of this book is to help students make sense of the physics they are learning. We cannot achieve this goal if students see physics as a set of disconnected mathematical equations that each apply only to a small number of specific situations. We stress conceptual and qualitative understanding and continually make connections between mathematical equations and conceptual ideas. We also try to build on ideas that students can be expected to already understand, based on the resources they bring from everyday experiences. This text is designed to work with learning strategies such as microcomputer-based labs and interactive lectures that are increasingly being used in physics instruction.

This is not an updated edition! Because of the many topics that appear in this book, it was decided to split the book into two parts, make corrections and more. You can now purchase the Second Edition: Understanding physics-mechanics I (earlier chapters from the first edition + corrections + chapter summaries) Understanding physics mechanics II (later chapters from the first edition + new chapter + corrections + chapter summaries).