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A Question of Coherence [Historical]

机译:连贯性问题[历史]

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Electromagnetic waves were first postulated by James Clerk Maxwell (1831-1879) in 1865. To demonstrate their existence 22 years later, Heinrich Hertz (1857-1894) had to design new instrumentation that he used to carry out an experiment than had never been performed before. To detect the waves produced by his oscillating electric circuit, he used a very crude receiver, subsequently known as the Hertz resonator. This was made of a simple wire shaped in a circle with a small gap between the two ends where a spark was caused by the waves (Hertz, 1887). It was a very weak effect that Hertz could hardly observe: a very tiny spark that required a dark room and even a magnifier. Hertz, focused on pure science, asserted, "I do not think that the wireless waves I have discovered will have any practical application" (O'Connor and Robertson, 2007).
机译:电磁波最初是由詹姆斯·克莱克·麦克斯韦(James Clerk Maxwell,1831-1879年)于1865年提出的。为了证明电磁波的存在,在22年后,海因里希·赫兹(Heinrich Hertz,1857-1894年)必须设计一种新仪器,他用来进行实验的仪器从未进行过之前。为了检测他的振荡电路产生的波,他使用了一个非常粗糙的接收器,后来称为赫兹谐振器。它是由一根简单的金属丝制成,该金属丝呈圆形,两端之间有一个很小的间隙,波浪引起火花(Hertz,1887年)。赫兹几乎看不到这是一个非常微弱的效果:一个很小的火花,需要一个黑暗的房间,甚至一个放大镜。专注于纯科学的赫兹断言:“我认为我发现的无线波不会有任何实际应用”(O'Connor和Robertson,2007)。

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