11. Despite the controversy, ASEF provides advice to limit exposure to electromagnetic waves . 12. Everything dependent upon satellites or electromagnetic waves is vulnerable to space weather. 13. With a standard atmosphere, electromagnetic waves are generally bent or refracted downward. 14. The existence of electromagnetic waves was first proven by Heinrich Hertz in 1887. 15. Optical dielectric waveguides guide electromagnetic waves in the optical spectrum ( light ). 16. Dr . Marcuvitz has also made many other significant contributions to electromagnetic waves . 17. It is not used for sound waves and other types of electromagnetic waves . 18. Such waves correspond to electromagnetic waves radiated from an accelerated charge. 19. Electromagnetic waves are produced whenever charged particles are electrostatic induction phenomena.20. These equations allow for solutions in the form of electromagnetic waves .
