So much of my career in high-tech dealt with harnessing the electromagnetic spectrum for various uses to include communications, telemetry, radar, navigation, tracking, machine vision, and precision measurement to name a few. Fortunate to have worked with great minds in signal processing, I spent over two decades in industries ranging from electronic warfare, satellite communications, cellular, GPS, surveying and mapping, fleet management and automatic vehicle location, telematics, E911, and location-based services.
Today, more so than ever in our history, each of us is bombarded with natural, and human-made, electromagnetic waves, most having their roots in the simple trigonometric function: sin x.
Enjoy this brief introductory video about the electromagnetic spectrum as we know it. There are seven follow-on videos, all produced by NASA, and no longer than five minutes or so, that go into more detail on different bands in the electromagnetic spectrum.
Fortunately, we do not need to explore the electromagnetic spectrum as I needed to in my fields and waves coursework via Maxwell’s equations.