Added almost 7 years ago | 00:02:54 | 46030 views
Leyden Jars, an early style of capacitor, can be connected to the two electrodes of the Wimshurst Machine. They will store charge as it is generated, giving a much stronger spark across the gap. Next we have a three-piece dissectible ...
Added almost 7 years ago | 00:01:10 | 44902 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 | 01:27:22 | 25247 views
Prof. Natalie Kuldell and Reshma Shetty PhD '08 are at the forefront of new tools in biological engineering that allow thousands of citizen scientists of all backgrounds to build custom bacteria and other simple organisms from off-the-sh...
Added almost 7 years ago | 00:02:51 | 47856 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 | 00:00:55 | 43149 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 almost 7 years ago | 00:02:02 | 40304 views
A plexiglass rod rubbed with fur picks up a positive electric charge, while a rubber rod rubbed with fur picks up a negative electric charge. When either rod is brought in contact with hanging tinsel, the tinsel becomes charged and flare...
Added almost 7 years ago | 00:01:11 | 31836 views
Two identical metal balls are dropped from the same height using an electromagnetic release. One ball is dropped freely, while the other hangs from a string, acting as a simple pendulum. Using two photogates, we see that the vertical v...
Added over 7 years ago | 00:01:28 | 173299 views
A bicycle wheel is suspended from one of end of its axie by a rope, and spun up by hand. The wheel's axle is then placed horizontally and the free end of the axle processes about the supported end. The gyroscope seems to defy gravity ...
Added over 7 years ago | 00:00:36 | 51820 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 | 00:01:26 | 51885 views
A solenoid is connected to AC power. First, a 10,000-turn coil is placed over the solenoid, but is not connected to the power source. However, the solenoid still induces current in coil, creating very high voltages because of the high...
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