Added over 7 years ago | 00:00:46 | 52337 views
A variable capacitor (C), large inductor or solenoid (L), and 200W light bulb (R) are connected in series to 120 VAC. The inductance of the inductor can be varied by inserting an iron core, and the capacitance can be varied by a row of ...
Added almost 7 years ago | 00:01:10 | 44885 views
A light bulb is connected in series with a coil of very fine copper wire and a DC power supply. The voltage is adjusted so that the bulb glows dimly. When the coil is immersed in liquid nitrogen the resistance of the wire decreases causi...
Added almost 4 years ago | 01:36:00 | 11910 views
03/29/2011 10:30 AM KresgeSallie Chisholm, Lee and Geraldine Martin Professor of Environmental Studies and Professor of Biology, MIT; Regina Barzilay, Associate Professor of Electrical Engineering and Computer Science, MIT:; Anette Hos...
Added almost 4 years ago | 00:59:57 | 11244 views
04/22/2009 7:00 PM Simmons HallSteven Hamburg, Chief Scientist, Environmental Defense FundDescription: The "dominant story of the next century" will be one of either gloom or redemption, says Steven Hamburg, depending on how humanity cho...
Added almost 4 years ago | 01:13:00 | 10669 views
05/12/2009 6:00 PM MuseumVladimir Bulovic, Professor of Electrical Engineering and Computer Science Description: How much energy does it take to turn on a lightbulb? Way too much in the U.S., where 22% of all electricity gets channeled...
Added almost 4 years ago | 01:08:00 | 10163 views
03/02/2010 4:00 PM 3"270Charles Fine, Chrysler Leaders for Manufacturing Professor; MIT Sloan School of Management; Richard Roth, Research Associate, Engineering Systems DivisionDescription: Suppose you could leapfrog 100 years of expe...
Added almost 4 years ago | 01:37:00 | 7203 views
09/15/2009 2:00 PM E19Daniel Nocera, The Henry Dreyfus Professor of Energy and Professor of Chemistry; ; ; Description: Daniel Nocera is swimming very hard against the current of mainstream energy research. While many scientists are ...
Added almost 4 years ago | 01:07:00 | 5482 views
04/27/2009 4:00 PM 46"3002Dr. Jeremy Nathans, '79, Johns Hopkins UniversityDescription: Sometime around 100 million years ago, when the continents of Africa and South America were still in touch, a female primate -- one of our ancestors ...
Added almost 4 years ago | 01:14:00 | 5417 views
03/13/2007 4:00 PM 32"123Sir John Pendry, Chair in Theoretical Solid State Physics Faculty NATURAL SCIENCES Division/Department Department of Physics, Imperial College, LondonDescription: According to 1 Corinthians, "For now, we se...
Added almost 4 years ago | 00:54:13 | 4168 views
10/09/2007 2:15 PM 10"250Daniel Nocera, The Henry Dreyfus Professor of Energy and Professor of Chemistry; ; ; Description: In 1845, the Dietz Company of New York introduced the sperm oil lantern, which nearly wiped out some whale spec...
Added almost 4 years ago | 01:15:00 | 3224 views
03/06/2008 7:00 PM 32"123Evelyn Hu, Scientific Director, California Nanosystems Institute Professor, Electrical & Computer Engineering; Description: Evelyn Hu meticulously describes designing and building a new generation of optical mat...
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