Added over 7 years ago | 00:08:14 | 94481 views |
Thoughts on Fieldwork From Three Research Sites Cultural Anthropology is a social science that explores how people understand - and act in - the world. But what, exactly, is it that Cultural Anthropologists do? How do they approach their...
Added over 7 years ago | 00:00:23 | 65800 views
A large solenoid is connected to DC power through a knife switch. When the switch is closed, the current builds up to approximately 30 amps. When the switch is opened, the solenoid attempts to keep the current flowing, creating a huge...
Added almost 7 years ago | 00:08:14 | 59976 views
Visit the MIT Museum where historic robots, dazzling holograms and kinetic sculpture are showcased in an intimate museum setting. Meet the people behind the exhibits - curators and Museum Director John Durant. Learn about the new Innovat...
Added over 7 years ago | 00:00:56 | 53464 views
A bismuth-based superconducting disk sits on a copper base and is immersed in liquid nitrogen. Two small, very strong magnets are placed on top of the superconductor. The magnets levitate due to the expelled magnetic field from the supe...
Added over 7 years ago | 00:00:46 | 52341 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 over 7 years ago | 00:00:36 | 51786 views
A solenoid enclosed in another solenoid is connected to a 12 volt battery. Also contained in the circuit is an iron contact switch connected to a spring arm, with a gap on one side of it. When the circuit is closed, the inner solenoid a...
Added over 7 years ago | 00:00:28 | 50462 views
Two bar magnets of the same size are dropped through an aluminum tube and a glass tube. The magnet dropped in the glass tube falls at the normal rate of acceleration due to gravity, but the magnet falling through the metal tube is slow...
Added almost 7 years ago | 00:02:51 | 47830 views
First, a dipole consisting of two conducting balls connected by an insulating rod swings at the end of a long plexiglass rod. The two balls are charged oppositely by touching it to a conducting rod in the field of a Van de Graaff generat...
Added almost 7 years ago | 00:01:10 | 44888 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 7 years ago | 00:00:55 | 43129 views
Paper confetti is placed atop a Van de Graaff generator and flies off when the grounding rod is removed. When turned on, a Van de Graaff generator builds up lots of negative charge on its large metal sphere. A grounding rod is used t...
Added over 7 years ago | 00:01:11 | 43001 views
A solid copper pendulum is mounted between the poles of an electromagnet (solenoid). The pendulum is set into motion, and then the magnets are turned on. The magnets induce eddy currents in the copper which oppose the motion of the pe...
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