Topic 4: Waves 4.2 – Traveling waves
{"Image DocumentName": "Topic 4: Waves 4.2 \u2013 Traveling waves", "Image ImageDescription": "The nature of electromagnetic waves. \uf0b7Because light is a wave, scientists believed it needed a medium. They postulated that empty space was not really empty, but was infused with a light-wave carrying medium called the luminiferous ether. \uf0b7Eventually, the results of the Michelson-Morley experiment showed that light waves do not need a physical medium through which to travel. \uf0b7As we will learn in Topic 5, a moving charge produces a changing electric field, which produces a changing magnetic field, and the two fields propagate through vacuum at the speed of light c = 3.00\uf0b4108 ms-1. \u00a9 2006 By Timothy K. Lund.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}