Instead of a local disturbance exerting a force on adjoining regions, changing magnetic fields create electric fields (as quantified by Faraday’s Law), and changing electric fields create magnetic fields (as quantified by Maxwell’s extension of Ampere’s Law). EM waves have many properties similar to the waves we experience in everyday life, but the underlying physics of EM waves is profoundly different.
The vibrating guitar string causes a sound wave to propagate through the medium of the air.Īmong the most fascinating phenomena examined in the course are electromagnetic (EM) waves. These forces then lead to the phenomenon of waves, disturbances that propagate through a medium. In this course you will see how physics can describe these motions mathematically.Įxtended physical systems that have been made to vibrate, like a string on a guitar, cannot return to their state of equilibrium without exerting forces on the area around them. Combining several pendulums or springs can lead to even more unexpected motions. But even these simple phenomena can respond in complicated and counterintuitive ways when subjected to forces known in physics as damping and driving. Think of what happens when you pull a mass attached to a spring or push a pendulum in a certain direction.
What are vibrations? Many physical systems vibrate or oscillate when something disrupts their equilibrium. We also rely on fundamental mathematics principles taught in 18.01 Single Variable Calculus and 18.02 Multivariable Calculus, as well as some aspects of 18.06 Linear Algebra. This course is designed for students who are already familiar with the concepts taught in 8.01 Classical Mechanics as well as 8.02 Electricity and Magnetism. 18.02 Multivariable Calculus and 8.02 Electricity and Magnetism.
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