wireless communication systems

"A renowned health authority reveals how we can protect ourselves against the harmful effects of electromagnetic fields"--Amazon.

Simple text and full-color photography introduce beginning readers to how cell phones work. Developed by literacy experts for students in kindergarten through third grade.

You probably use Wi-Fi all the time to connect to the internet through your laptop, tablet, or phone. It's easy. Wi-Fi hotspots surround you as you go through your day - from school to a pizza place or coffee shop and then back home. Not so long ago, the internet wasn't as accessible. Find out how Wi-Fi works, how it became commonplace, and what it might do for you in the future.

A virtual assistant by any name - Alexa, Siri, whoever - can be a sweet addition to your home. You might use one for simple jobs like playing music or streaming podcasts. And you might use one to communicate with friends and remind you about homework coming due while helping you make your breakfast. Find out how digital assistants work and what the future might hold for this part of a high-tech home.

"Engaging images accompany information about teleportation. The combination of high-interest subject matter and narrative text is intended for students in grades 3 through 8"--Provided by publisher.

Readers will follow the sequence of how wireless technologies have brought us from the first Morse code radio transmission to today s Internet of Things. Engaging photographs and a running timeline illustrate important inventions that have changed the way we use radio waves, from Bluetooth connections to cell phones.

"This ... guide covers the programming and electronics essentials needed to build fun and educational sensor-based projects with both Arduino and Raspberry Pi ... Features step-by-step DIY projects that use inexpensive, readily available parts. You will discover how to use touch, temperature, moisture, light, sound, and motion sensors -- even sensors that detect the presence of a human"--Back cover.

Explores smartphones, including how they work, the history, and more.

A photo-illustrated look at the life of Mary Lemist Titcomb, a librarian who developed and implemented one of America's first bookmobiles.

"Introduces readers to the science that makes Wi-Fi possible. Accessible text, helpful diagrams, and a 'How Does It Work?' feature make this book an exciting introduction to understanding technology"--Provided by the publisher.