Christopher Cooper

Modern life makes extensive use of electronics. On a daily basis, we use smartphones, computers, and TVs in the home and robots in industry and commerce. This title outlines the development of electronics, from early vacuum tubes to today's microchips. It explains how semiconductors work at the atomic level and how they are made into solid-state devices essential for the Internet and other applications. A biographical chapter on J. J. Thomson, who...

"A compelling introduction to electric current, this volume investigates the conducting properties of various materials and goes on to describe ways of producing electric currents. It also describes how electricity is used in the home, in industry, and in the world of communications. Aligned to the Common Core science standards, the text explains moving charge, current and stored charge, resistance and power, direct and alternating currents, and electricity...

"Ticking clocks, claps of thunder, the human voice--sound is anything that can be heard. Hearing sound is one thing, but understanding just how it works and what its properties are is quite another. Answering these questions and others concerning supersonic speed and breaking the sound barrier, how the human voice and ear work, and the age-old question of whether a tree falling in the forest unobserved makes any noise, this volume provides an accessible...

Everything you think you know about Nikola Tesla is wrong. Nikola Tesla was one of the greatest electrical inventors who ever lived. For years, the engineering genius was relegated to relative obscurity, his contributions to humanity (we are told) obscured by a number of nineteenth-century inventors and industrialists who took credit for his work or stole his patents outright. In recent years, the historical record has been "corrected" and Tesla has...

Examines the elements that make up the physical world and the properties and behavior of different kinds of matter.

What makes electricity happen? How does electricity affect sound? Why does electricity flow in two directions? Investigate the charged-up world of physical science! Find out for yourself about Electricity through experiments that you can do at home. Learn how the sun can power electrical equipment. Make a battery from a potato. Electricity will show you the importance of investigating and understanding the physical world around you.

"[Fourteen] short stories (some illustrated) feature characters and situations from across the Star Trek universe, including Star Trek Enterprise, Star Trek: The Next Generation, Star Trek: Deep Space nine, and Star Trek Voyager."