The Electromagnetic Spectrum

Radio, microwave, infrared, visible, ultraviolet, X-ray and gamma radiation are one family.

• We lay them on a scale of wavelength and frequency.
• Then we ask where each comes from, how it is detected and what it does.
• The ozone layer, the greenhouse effect and the ionosphere that bounces radio waves close the course.
• It serves the Indian syllabus (NCERT, JEE Main, NEET) and the matching topic of A-Level, IB and AP.