On October 13, 1776, British mathematician and physicist Peter Barlow was born. He is still reknown today for his development of two varieties of achromatic (non-colour-distorting) telescope lenses, the so-called Barlow lenses. Opinions derived from long experience are exceedingly valuable, and outweigh all others, while they are consistent with facts and with each other; but they are worse than useless when they lead, as in this instance, to directly opposite opinions. – Peter…Read more
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