The Attractiveness Of Magnetic Fields

Wed, 10 Apr 2013 07:07:37 GMT

What causes a material to be magnetic?

Manipulating microscopic magnetic beads at MIT

Tue, 25 Sep 2012 14:30:22 GMT

MIT researchers found that arc-shaped magnetic nanotracks could be used most effectively to control the motion of magnetic microbeads across the surface of a silicon wafer. By combining these arcs, they produced configurations such as this, with two "reservoir" rings at top right and left, where the beads can be stored indefinitely, connected to tracks where they can be moved along as needed. In the center, a junction allows the bead's path to be altered, either continuing to the side or moving downward to another section of the wafer. By combining such structures, complex series of manipulations of the beads could be carried out.

Read more at MIT News: http://web.mit.edu/newsoffice/2012/magnetic-beads-lab-on-a-chip-0925.html

Cleaning up oil spills with magnets

Wed, 12 Sep 2012 07:10:37 GMT

MIT researchers have developed a new technique for magnetically separating oil and water that could be used to clean up spills.

34. Gratings; Resolving Power; Single-Slit Diffraction; Angular Resolution; Human Eye; Telescopes

Tue, 11 Sep 2012 07:05:03 GMT

MIT 8.02 Electricity and Magnetism, Spring 2002
View the complete materials: http://ocw.mit.edu/high-school/physics/
Instructor: Walter Lewin

License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

35. Doppler Effect; The Big Bang; Cosmology

Tue, 11 Sep 2012 07:05:03 GMT

36. Farewell Special; Bring a Friend!

Tue, 11 Sep 2012 07:05:03 GMT

4. Electrostatic Potential; Electric Energy; eV; Conservative Field; Equipotential Surfaces

Tue, 11 Sep 2012 07:05:03 GMT

5. E = -grad V; More on Equipotential Surfaces; Conductors; Electrostatic Shielding (Faraday Cage)

Tue, 11 Sep 2012 07:05:03 GMT

6. High-Voltage Breakdown; Lightning; Sparks - St. Elmo's Fire

Tue, 11 Sep 2012 07:05:03 GMT

7. Capacitance; Field Energy

Tue, 11 Sep 2012 07:05:03 GMT

8. Polarization; Dielectrics; The Van de Graaff; More on Capacitors

Tue, 11 Sep 2012 07:05:03 GMT

9. Currents; Resistivity; Ohm's Law

Tue, 11 Sep 2012 07:05:03 GMT

23. Review Exam 2

Tue, 11 Sep 2012 07:05:02 GMT

23. Review Exam 2

Tue, 11 Sep 2012 07:05:02 GMT

25. Driven LRC Circuits; Resonance; Metal Detectors (Beach/Airport)

Tue, 11 Sep 2012 07:05:02 GMT

26. Traveling Waves; Standing Waves; Musical Instruments

Tue, 11 Sep 2012 07:05:02 GMT

27. Resonance; Destructive Resonance; Electromagnetic Waves; Speed of Light; Radio - TV; Distanc...

Tue, 11 Sep 2012 07:05:02 GMT

28. Index of Refraction; Poynting Vector; Oscillating Charges; Radiation Pressure; Comet Tails; ...

Tue, 11 Sep 2012 07:05:02 GMT

29. Snell's Law; Refraction; Total Reflection; Dispersion; Prisms; Huygens's Principle; The Illu...

Tue, 11 Sep 2012 07:05:02 GMT

3. Electric Flux; Gauss's Law; Examples

Tue, 11 Sep 2012 07:05:02 GMT

30. Polarizers; Malus's Law; Brewster Angle; Polarization by Reflection and Scattering; Why is t...

Tue, 11 Sep 2012 07:05:02 GMT

31. Rainbows; A modest rainbow will appear in the lecture hall!; Fog Bows; Supernumerary Bows; P...

Tue, 11 Sep 2012 07:05:02 GMT

32. Review Exam 3

Tue, 11 Sep 2012 07:05:02 GMT

33. Double-Slit Interference; Interferometers

Tue, 11 Sep 2012 07:05:02 GMT

15. Ampere's Law; Solenoids; Revisit the Kelvin Water Dropper; Midterm Evaluation

Tue, 11 Sep 2012 07:05:01 GMT

16. Electromagnetic Induction; Faraday's Law; Lenz Law; Complete Breakdown of Intuition; Non-Con...

Tue, 11 Sep 2012 07:05:01 GMT

17. Motional EMF; Dynamos; Eddy Currents; Magnetic Braking

Tue, 11 Sep 2012 07:05:01 GMT

18. Displacement Current (Difficult Concept); Synchronous Motors; Induction Motors; Secret Top, ...

Tue, 11 Sep 2012 07:05:01 GMT

19. How do Magicians levitate women? (with demo); Electric Shock Treatment (no demo); Electrocar...

Tue, 11 Sep 2012 07:05:01 GMT

2. Electric Field; Field Lines; Superposition; Inductive Charging; Dipoles; Induced Dipoles

Tue, 11 Sep 2012 07:05:01 GMT

20. Inductance; RL Circuits; Magnetic Field Energy

Tue, 11 Sep 2012 07:05:01 GMT

21. Magnetic Materials; Dia-, Para-, and Ferromagnetism; Prize Ceremony of Motor Contest

Tue, 11 Sep 2012 07:05:01 GMT

13. Moving Charges in B-fields; Cyclotron; Synchrotron; Mass Spectrometer; Cloud Chamber

Mon, 10 Sep 2012 17:30:21 GMT

22. Hysteresis; Electromagnets; Bohr Magneton; Maxwell's Equations; 600 daffodils

Mon, 10 Sep 2012 17:30:21 GMT

11. Magnetic field; Lorentz Force; Torques; Electric Motors (DC); Oscilloscope

Sat, 08 Sep 2012 07:09:12 GMT

12. Review Exam 1 (Secret Top!)

Sat, 08 Sep 2012 07:09:12 GMT

14. Biot-Savart Law; Gauss' Law for Magnetic Fields; Revisit the "Leyden Jar"; High-Voltage Powe...

Sat, 08 Sep 2012 07:09:12 GMT

1. What holds our world together? Electric Charges (Historical); Polarization; Electric Force; C...

Sat, 08 Sep 2012 07:09:11 GMT

10. Batteries; EMF; Energy Conservation; Power; Kirchhoff's Rules; Circuits; Kelvin Water Dropper

Sat, 08 Sep 2012 07:09:11 GMT

Magnetoencephalography (MEG) animation

Thu, 02 Feb 2012 08:04:06 GMT

Magnetoencephalography (MEG) is a technique for mapping brain activity by recording magnetic fields produced by electrical currents occurring naturally in the brain, using arrays of SQUIDs (superconducting quantum interference devices). Applications of MEG include basic research into perceptual and cognitive brain processes, localizing regions affected by pathology before surgical removal, determining the function of various parts of the brain, and neurofeedback.

The Wonders of Electricity and Magnetism

Tue, 13 Dec 2011 01:36:27 GMT

The inimitable Walter Lewin gives a literally hair-raising performance in this MIT Museum lecture/demonstration for learners young and old.

Recent Videos tagged 'Magnets' on MIT Video

The Attractiveness Of Magnetic Fields

Manipulating microscopic magnetic beads at MIT

Cleaning up oil spills with magnets

34. Gratings; Resolving Power; Single-Slit Diffraction; Angular Resolution; Human Eye; Telescopes

35. Doppler Effect; The Big Bang; Cosmology

36. Farewell Special; Bring a Friend!

4. Electrostatic Potential; Electric Energy; eV; Conservative Field; Equipotential Surfaces

5. E = -grad V; More on Equipotential Surfaces; Conductors; Electrostatic Shielding (Faraday Cage)

6. High-Voltage Breakdown; Lightning; Sparks - St. Elmo's Fire

7. Capacitance; Field Energy

8. Polarization; Dielectrics; The Van de Graaff; More on Capacitors

9. Currents; Resistivity; Ohm's Law

23. Review Exam 2

23. Review Exam 2

25. Driven LRC Circuits; Resonance; Metal Detectors (Beach/Airport)

26. Traveling Waves; Standing Waves; Musical Instruments

27. Resonance; Destructive Resonance; Electromagnetic Waves; Speed of Light; Radio - TV; Distanc...

28. Index of Refraction; Poynting Vector; Oscillating Charges; Radiation Pressure; Comet Tails; ...

29. Snell's Law; Refraction; Total Reflection; Dispersion; Prisms; Huygens's Principle; The Illu...

3. Electric Flux; Gauss's Law; Examples

30. Polarizers; Malus's Law; Brewster Angle; Polarization by Reflection and Scattering; Why is t...

31. Rainbows; A modest rainbow will appear in the lecture hall!; Fog Bows; Supernumerary Bows; P...

32. Review Exam 3

33. Double-Slit Interference; Interferometers

15. Ampere's Law; Solenoids; Revisit the Kelvin Water Dropper; Midterm Evaluation

16. Electromagnetic Induction; Faraday's Law; Lenz Law; Complete Breakdown of Intuition; Non-Con...

17. Motional EMF; Dynamos; Eddy Currents; Magnetic Braking

18. Displacement Current (Difficult Concept); Synchronous Motors; Induction Motors; Secret Top, ...

19. How do Magicians levitate women? (with demo); Electric Shock Treatment (no demo); Electrocar...

2. Electric Field; Field Lines; Superposition; Inductive Charging; Dipoles; Induced Dipoles

20. Inductance; RL Circuits; Magnetic Field Energy

21. Magnetic Materials; Dia-, Para-, and Ferromagnetism; Prize Ceremony of Motor Contest

13. Moving Charges in B-fields; Cyclotron; Synchrotron; Mass Spectrometer; Cloud Chamber

22. Hysteresis; Electromagnets; Bohr Magneton; Maxwell's Equations; 600 daffodils

11. Magnetic field; Lorentz Force; Torques; Electric Motors (DC); Oscilloscope

12. Review Exam 1 (Secret Top!)

14. Biot-Savart Law; Gauss' Law for Magnetic Fields; Revisit the "Leyden Jar"; High-Voltage Powe...

1. What holds our world together? Electric Charges (Historical); Polarization; Electric Force; C...

10. Batteries; EMF; Energy Conservation; Power; Kirchhoff's Rules; Circuits; Kelvin Water Dropper

Magnetoencephalography (MEG) animation

The Wonders of Electricity and Magnetism