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The AstronomersMIT Physics Demo -- Temperature Effect on Resistance
MIT Physics Demo -- Temperature Effect on Resistance
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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 causing the current to increase and the bulb to glow brightly. See the original video and more on MIT TechTV here - http://techtv.mit.edu/videos/1689-temperature-effect-on-resistance
Added on Nov 26, 2012 by lonewolf
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Time: 01:11 | Views: 256 | Comments: 0
   
  Physics  
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