Fun with Pulses
Journal
Physics World
Journal Volume
3
Journal Issue
11
Pages
39-42
Date Issued
1990
Author(s)
Abstract
In 1887, 26 years after Maxwell first published his seminal equations that define electromagnetic theory, Hertz produced the first controlled radio wave in the laboratory using an oscillating dipole. Since then, the use of electromagnetic waves has permeated our daily life. In the earlier applications the wave forms were almost sinusoidal, prominent examples being radio (AM and FM), television and radar. In each of these cases, there is a relatively narrow bandwidth around a carrier frequency.
Type
journal article