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1911年初,有人在零下269℃的低温环境下测量汞的电阻时,惊奇地发现其电阻指示值为零。当时人们误以为是测量仪表出现了故障,于是拿来各种仪表反复进行校核,结果得到确证:在温度为4.2K(K为绝对温度,绝对温度零度相当于-273℃)时,汞的电阻便“消失”了。此后科学家们又陆续地发现,铅、铌、铟等金属在一定的低温环境下,它们的电阻也会“突然消失”。金属电阻完全消失这一特殊现
At the beginning of 1911, when measuring mercury resistance in a low temperature environment of minus 269 ° C, it was surprisingly found that the resistance value was zero. At that time people mistakenly thought that there was a fault in the measuring instrument, so it was checked repeatedly by various instruments. The result was confirmed: when the temperature is 4.2K (K is absolute temperature and zero absolute temperature is -273 ℃), mercury Resistance will “disappear ”. Since then, scientists have found that metals such as lead, niobium and indium also “suddenly disappear” at a certain low temperature. Metal resistance completely disappeared this special