Electromagnetic waves. Properties. EM radiation scale
Grade 11, section 2, lesson 4. Lesson 3: forced oscillations, 50 Hz AC, resonance. EM waves — oscillations of and propagating without a medium (deeper than grade 9).
Grade 11, section 2, lesson 4. Lesson 3: forced oscillations, 50 Hz AC, resonance. EM waves — oscillations of E and B propagating without a medium (deeper than grade 9).