What Is Electromagenetic Waves

1. What is electromagenetic waves?? A wave that consist of a combination of oscillating electric & magnetic fields pependicular to each other. 2. ..its properties??? - a transverse wave - carries energy along it - dont need medium to travel, i.e can travel in vacuum - electrically neutral - electric+magnetic field oscillates at right angle (pependicular) to each other and to the direction of propagation -undergoes reflection,refraction, diffraction & interference -move with speed of light 3. ..its SPECTRUM???? the spectrum is a must to be remembered, could come out in Paper 1 shortest wavelength: Gamma ray largest wavelength: Radio wave

lowest freqency: Radio wave highest freqency: Gamma ray

4. ....its application ???? U need to remember at least 2 applications for each of the spectrum. Watch these video..it might help u to memorize them.