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Updated: May 22, 2025
Then came a day when Uncle Richard found that he must go to town again to get sundry fittings from an optician, and Tom was left the task of grinding three small pieces of plate-glass together, so as to produce one that was an accurate plane or flat.
It is, I suppose, that Roger Bacon, receiving a certain amount of knowledge from his teachers, had that in him which turned it to unsuspected directions and made it immensely greater and more fruitful. The average optician has probably added a little to what he was taught, but not much, and has doubtless forgotten or confused a good deal.
Moreover, both the dark solar and the bright terrestrial "D lines" were displayed by the refined Munich appliances as double. In this striking correspondence, discovered by Fraunhofer in 1815, was contained the very essence of solar chemistry; but its true significance did not become apparent until long afterwards. Fraunhofer was by profession, not a physicist, but a practical optician.
Mr Berecroft, who wished to find him out and relieve him, could not ascertain in what quarter of the town he resided, and shortly after was obliged to proceed upon another voyage. Thus was the poor optician left to his fate; and it is probable that, but for the fortunate return of Newton, it would soon have been miserably decided.
They consist in new furniture for my room, a cane which makes all Paris chatter, a divine opera-glass, which my workers have had made by the optician at the Observatory; also the gold buttons on my new coat, buttons chiselled by the hand of a fairy, for the man who carries a cane worthy of Louis XIV. in the nineteenth century cannot wear ignoble pinchbeck buttons.
Item Professors Lloyd and Owen: the former, of Dublin, son of the late Provost, I had seen before and knew; a great mathematician and optician, and a discoverer in those matters; with a clever little Wife, who has a great deal of knowledge, quite free from pretension. Owen is a first-rate comparative anatomist, they say the greatest since Cuvier; lives in London, and lectures there.
And the mere fact that the problem of achromatism was solved by "the mind of a sagacious optician inquiring how this matter was managed in the eye," no more proves that "this could not be in the eye without purpose, which suggested to the optician the only effectual means of attaining that purpose," than would the fact, say, of the winnowing of corn having suggested the fanning-machine prove that air currents were designed for the purpose of eliminating chaff from grain.
A little gas was allowed into each tube, and then almost all the gas was taken out again, so that only a mere trace was left. I pass a current of electricity through these tubes, and now you see they are glowing with beautiful colors. The different gases give out lights of different hues, and the optician has exerted his skill so as to make the effect as beautiful as possible.
The substitution of glass lenses for reflectors is not a new idea, since we find that a proposal to that effect was made by a London optician to Mr. Smeaton, in 1759, for illuminating the Eddystone lighthouse, but was not adopted by him.
Lecturing on anatomy is a routine, but by no means a sinecure. It requires a clearness and accuracy of statement which might be compared to the work of an optician. Some idea of it can be derived from the fact that there may be eight or ten points to a human bone, each of which has a name of eight or ten syllables, only to be acquired by the hardest study.
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