Nov
06

The Importance of Mathematics...

By:Manoj

thumbnail The Importance of Mathematics by Timothy Gowers at The Millennium Meeting (2000).

Nov
06

Lenz's Law Demo

By:Manoj

thumbnail If you drop the little metal slug down the copper tube, it falls under the pull of gravity, and drops out at the bottom, just as you would expect. But take the second, apparently identical, slug; drop it down the tube, and hey presto! the slug travels down the tube extremely slowly. You can even see it\'s slow passage via the window in the side of the tube. It is a great magic trick, but the truth is just as amazing. The second slug is highly magnetic. Now Michael Faraday, the British physicist, discovered as long ago as 1831 that when you pushed a bar magnet into...

Nov
06

Electromagnetic Induction

By:Manoj

thumbnail a brief description of electromagnetic induction, Micheal Faraday, and his work, including animation

Nov
06

Induction, Ampere's Law, and...

By:Manoj

thumbnail This is an unconditional branch from my previous video on VLF antennas. My VLF antenna doesn\'t have enough coils and is very useless, but it works great for picking up ambient sounds from electrical devices...and other coils that are hooked up to MP3 players

Nov
06

Ohm's Law Part 2: Ohm's Law...

By:Manoj

thumbnail This video demonstrates the use of Ohm\'s Law to calculate current, voltage, and resistance in a simple circuit.

Nov
06

Dr. Altman Ohm's Law

By:Manoj

thumbnail The High School Physics Project

Nov
05

5th Grade: Dividing Fractions

By:RK

thumbnail lesson on how to divide fractions

Nov
05

Fractions 3: Dividing

By:RK

thumbnail This is the third part of an in depth review of fractions.

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