The book, Physics is one among the 12 books of the series, Children's Encyclopedia The World of Knowledge. The subject matter contains simple and fully coloured illustrative chapters on Energy, Magnetism, Electricity, Light, Sound, Force, Motion, Atomic and Nuclear Energy, Pressure, Relativity, etc. Hence dear readers, grab the book as soon as you can, for it's a treasure trove of knowledge and information, which you can use it as a reference material for academic studies or extra curricular activities. Happy Reading and Learning! CONTENTS: PHYSICS 1. Introduction 2. Energy 3. Electrical Energy 4. Magnetism 5. Energy Waves 6. Light 7. Sound 8. Heat 9. Force 10. Motion 11. Machines 12. Gravity 13. Atomic and Nuclear Energy 14. Pressure 15. Mirrors and Reflection 16. Relativity 17. Exercises 18. Glossary