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...researches and, unlike most of his contemporaries, was impressed by the notion of a field. However, Maxwell had his own reasons for believing in an ether. In particular, he believed that an ether was necessary to account for the propagation of light, which was generally regarded as a kind of wavelike disturbance and was therefore thought to require a medium just as ocean...

...researchers, bankers, lawyers, steel erectors, bricklayers and joiners, machinery sales people … and engineers. So who or what are engineers and what do they do? Ask this question of people in the street and you are likely to get many different answers. Some may think of building things, such as bridges or skyscrapers; some may think of repairing things like cars or...