April 2022
Beginner
960 pages
23h 12m
English
Content preview from Electronics All-in-One For Dummies, 3rd Edition
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Chapter 4
Working with Infrared
IN THIS CHAPTER
Looking at ways to transmit information using infrared light
Creating infrared light
Detecting infrared light
Building a proximity detector
In this chapter, you learn how to work with circuits that detect the invisible light that’s commonly called infrared. Infrared light has all sorts of applications for wireless communication, the most common of which is the remote control for your television. Other uses for infrared include night-vision goggles and cameras, and temperature detection.
Have fun!
Introducing Infrared Light
Infrared light is light whose frequency is just below the range of visible red light. Specifically, infrared is light whose frequency falls between 1 THz to 400 THz (one THz is one trillion cycles per second). The infrared spectrum falls right between microwaves and visible light.
In Chapter 1 of this minibook, you learn that there’s an inverse relationship between frequency and wavelength. In other words, the lower the frequency, the longer the wavelength. If you describe infrared in terms of its wavelength rather ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.