Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Electromagnetic theory 1 SEE ALSO narrower term: Electromagnetic waves 11 SEE ALSO narrower term: Unified field theories 9 Electromagnetic theory -- Study and teaching (Secondary) 1 Electromagnetic waves 11 SEE ALSO narrower term: Extraterrestrial radiation 1 SEE ALSO narrower term: Heat 11 SEE ALSO narrower term: Light 36 SEE ALSO narrower term: Wave-particle duality 1 SEE ALSO narrower term: X-rays 4 Electromagnetic waves -- Congresses. 1 Electromagnetic waves -- Experiments -- Fiction. 2 Electromagnetic waves -- Health aspects. 2 Electromagnetic waves -- Juvenile literature. 4 Electromagnetic waves -- Miscellanea. 3 Electromagnetic waves -- Physiological effect -- SEE: Electromagnetism -- Physiological effect 2 Electromagnetic waves -- Software. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >