MIT 8.02 Electricity and Magnetism Lecture 16

MIT 8.02 Electricity and Magnetism, Spring 2002

Professor Walter Lewin

Electromagnetic Induction, Faraday's Law, Lenz Law, Complete Breakdown of Intuition, Non-Conservative Fields.

Other lectures from the same course

Science at the Theater: Extreme Science

On Feb. 27, 2012 at the Berkeley Repertory Theatre, four Berkeley Lab scientists presented talks related to extreme science - and what it means to you. Topics include: Neutrino hunting in Antarctica. Learn why Spencer Klein goes to the ends of the Earth to search for these ghostly particles. From Chernobyl to Central Asia, Tamas Torok travels the globe to study microbial diversity in extreme environments. Andrew Minor uses the world's most advanced electron microscopes to explore materials at ultrahigh stresses and in harsh environments. And microbes that talk to computers? Caroline Ajo-Franklin is pioneering cellular-electrical connections that could help transform sunlight into fuel.

 

Lenz's Law with Copper Pipe

A magnet is dropped down a conducting copper pipe and feels a resistive force. The falling magnet induces a current in the copper pipe and, by Lenz's Law, the current creates a magnetic field that opposes the changing field of the falling magnet. Thus, the magnet is "repelled" and falls more slowly.

Other demonstrations from MIT

 

Temperature & Ultra-Cold Atoms - Sixty Symbols

We look at what makes things hot and cold - and look at some of the coldest atoms in the Universe!

Other Sixty Symbols videos

Phil Plait: How to defend Earth from asteroids

What's six miles wide and can end civilization in an instant? An asteroid -- and there are lots of them out there. With humor and great visuals, Phil Plait enthralls the TEDxBoulder audience with all the ways asteroids can kill, and what we must do to avoid them.

Other TED Talks