Music is pleasant sound. Music is produced by instruments, each with a unique sound. In this book, you will get to know the instrument families such as brass, woodwind, stringed and percussion. Identify the instruments under each family and read about how they produce sound. Which of these instruments is your favorite?

Music is pleasant sound. Music is produced by instruments, each with a unique sound. In this book, you will get to know the instrument families such as brass, woodwind, stringed and percussion. Identify the instruments under each family and read about how they produce sound. Which of these instruments is your favorite?

Yes, sound is a form of energy too. In this book, you will study about the basic physical phenomena of sound. What is the source of sound? How does it travel? What are sound waves? And how are sound waves affected by the volume of sound? This book is an excellent introduction to sound as an energy. Buy a copy today.

Yes, sound is a form of energy too. In this book, you will study about the basic physical phenomena of sound. What is the source of sound? How does it travel? What are sound waves? And how are sound waves affected by the volume of sound? This book is an excellent introduction to sound as an energy. Buy a copy today.

The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.

The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.

The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.

Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.

The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.

The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.