MIT Vibrations and Waves Problem Solving Help Videos, Fall 2012 - 10. Interference of Electromagnetic Waves

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/ Instructor: Wit Busza Consideration of the interference of electromagnetic waves produced by multiple oscillating charges, and the fields produced at distances from the charges where all other fields can be ignored and the rays from every charge are approximated as parallel. *NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.* Chapters 0:00:00 Title slates, and clarification 0:00:46 Interference of EM waves overview 0:26:30 Calculation of the amplitude of the electric field and its polarization, at two locations, produced by two identical charges, separated by a small distance, and oscillating at right angles to each other. The calculation is done using the addition of trigonometric functions. 0:29:32 There are three oscillating charges, all in a row. The resultant oscillating electric field is calculated at a point which is in line with the charges and a long distance away from the charges. The calculation is done using the addition of complex amplitudes. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu