Magnetism Videos
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A magnet with a very strong magnetic field is held in place on an aluminum disk. The disk is attached to a motor powered by variable AC current. When the disk rotates, the magnet will levitate above it due to eddy currents generated in the disk. With the disk spinning, these eddy currents form to oppose the magnetic field of the magnet, making it levitate. When the motor is turned off, the magnet falls back to the disk.

An RF transmitter is connected to a long antenna, emitting radio waves. A dipole antenna with a light bulb between its elements acts as the receiver. When the receiving antenna is parallel to the transmitter, the radio waves are absorbed, creating a current in the antenna and causing the bulb to glow. When perpendicular, no current is created, and the bulb does not glow.

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An audiovisual magnet exhibit.

Author: Discovery Added: Fri, 04 Apr 2008 19:16:17 -0800 Duration: 152Mike Rowe meets his match again ... and again ... and again. All new episodes of Dirty Jobs air Mondays at 9 on Discovery. http://www.discovery.com/dirtyjobs

A simple trick with a BIC pen.

Exam 2 Review: Part 1/11 Professor Gabriella Sciolla, Physics Solenoid, current, magnetic field, Amperian loop, Ampere's law -------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 2/11 Professor Gabriella Sciolla Charge, electric field, symmetry, Gauss's law, flux ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 3/11 Professor Gabriella Sciolla, Physics Moving charges, current, velocity, magnitude and direction of magnetic field ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 4/11 Professor Gabriella Sciolla, Physics Ampere's law, Amperian loop, symmetry, magnetic field, enclosed current ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 5/11 Professor Gabriella Sciolla, Physics Current in cylindrical shell, current density, regions, Ampere's law ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 6/11 Professor Gabriella Sciolla, Physics Infinite wire, round loop, direction of magnetic field, Biot-Savart law ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 7/11 Professor Gabriella Sciolla, Physics Rotating loop, angular velocity, magnetic field, flux, emf, Faraday's law ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 8/11 Professor Gabriella Sciolla, Physics External magnetic field, emf, flux, magnitude and direction of current ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 9/11 Professor Gabriella Sciolla, Physics Magnetic field, constant flux, increasing current, induced emf ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 10/11 Professor Gabriella Sciolla, Physics Magnetic field, Ampere's law, magnetic forces, force directions ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

Exam 2 Review: Part 11/11 Professor Gabriella Sciolla, Physics Magnetic forces, magnitude and direction ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 3: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Moving charges, current, velocity, magnitude and direction of magnetic field ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 4: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Ampere's law, Amperian loop, symmetry, magnetic field, enclosed current ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 9: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Magnetic field, constant flux, increasing current, induced emf ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 6: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Infinite wire, round loop, direction of magnetic field, Biot-Savart law ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 10: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Magnetic field, Ampere's law, magnetic forces, force directions ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 2: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla Charge, electric field, symmetry, Gauss's law, flux ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 7: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Rotating loop, angular velocity, magnetic field, flux, emf, Faraday's law ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 5: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Current in cylindrical shell, current density, regions, Ampere's law ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 8: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics External magnetic field, emf, flux, magnitude and direction of current ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 1: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Solenoid, current, magnetic field, Amperian loop, Ampere's law -------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

PART 11: 8.02 Review 13 Nov 2007 Professor Gabriella Sciolla, Physics Magnetic forces, magnitude and direction ------------------------------------------------------------- Video: K. Baldauf, V. Ivanova, K. Mclaughlan Play video in Quicktime format for best quality.

I can't explain this, this little magnet make the egg go into the bottle :S Can you explain this? If yes please comment.