"We must all beware the very real and understandable human tendency to ignore or subvert facts, and findings of science, that discomfort us for reasons of ideology, politics, religion, or personal taste."

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The experiment left no doubt that, as far as accuracy of measurement went, the resistance disappeared. At the same time, however, something unexpected occurred. The disappearance did not take place gradually but abruptly. From 1/500 the resistance at 4.2K, it could be established that the resistance had become less than a thousand-millionth part of that at normal temperature. Thus the mercury at 4.2K has entered a new state, which, owing to its particular electrical properties, can be called the state of superconductivity.

— Heike Kamerlingh Onnes