Basic of Electromagnetic waves - Basic of Electromagnetic Waves
Description
Radiation is all around us - without it, we wouldn’t exist. Yet the word has become synonymous with danger, death, and disaster. This MOOC will allow the world to see radiation in a new light, to expose its benefits as well as its risks. X-ray radiation, for example, is a scientific and medical discovery that has improved or prolonged billions of lives. Most of us have had an X-ray at some point in our life, at the Dentist, in a hospital, or clinic. Yet few people really understand what X-rays are or where they come from. In this course, we will travel along the spectrum of electromagnetic radiation from unimaginably long to infinitesimally small wavelengths. At each significant point along the way, we will stop and consider: What is the wavelength and frequency of this radiation? Is it ionizing or not? Who discovered it and how? What are the uses of this radiation and What are the risks associated with it? Through this, we hope to clarify a topic that is often confusing and concerning for many.
