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Updated: May 22, 2025
One is that the aberrations of the telescopes must be perfectly corrected, a very difficult matter of itself, and requiring the highest skill of the optician. Another, the fact that the human eye will accommodate itself to small distances when setting the focus of the observing telescope.
And we know what Helmholtz, the highest authority in Europe on the subject, has said about the human eye; that if an optician had sold him an instrument so carelessly made, he would have thought himself fully justified in returning it. We have now seen that a perfect series can be followed, from simple spots to the wonderful ball-and-socket ornaments. Mr.
I once knew a man with lung trouble who inadvertently strayed into an oculist's and was looked over and sent away with an order on an optician. And should you through error stray into the office of a nose and throat specialist, and ask him to treat you for varicose veins, he would probably do so by nasal douche.
All that method could do had been accomplished by Bichat and his followers. It was for the optician to take the next step. The future of anatomy and physiology, as an enthusiastic micrologist of the time said, was in the hands of Messrs. Schieck and Pistor, famous opticians of Berlin. In those earlier days of which I am speaking, all the points of minute anatomy were involved in obscurity.
All that method could do had been accomplished by Bichat and his followers. It was for the optician to take the next step. The future of anatomy and physiology, as an enthusiastic micrologist of the time said, was in the hands of Messrs. Schieck and Pistor, famous opticians of Berlin. In those earlier days of which I am speaking, all the points of minute anatomy were involved in obscurity.
Upon this supposition, it differed from that which Galileo constructed; and the Italian philosopher will be justly entitled to the honour of having invented that form of the telescope which still bears his name, while we must accord to the Dutch optician the honour of having previously invented the astronomical telescope.
A dentist is one of the smallest of power users, so small, in fact, that if every one in a city were connected with a circuit, the load from this cause would never be felt. We will, however, put them down at from 10 to 20 per cent. The optician uses a motor to turn his grind stones, and its use in this case will average from 20 to 30 per cent.
It takes years of practice to know how to use a complicated microscope. The optician looked suspiciously at me as I made these wholesale purchases. He evidently was uncertain whether to set me down as some scientific celebrity or a madman. I think he inclined to the latter belief. I suppose I was mad. Every great genius is mad upon the subject in which he is greatest.
The very best optician will always find that on a first trial his glass is not perfect. He will find that he has not given exactly the proper curves to secure achromatism. He must then change the figure of one or both the glasses by polishing it upon a tool of slightly different curvature. He may also find that there is some spherical aberration outstanding.
That may be all very well in a salon, or in the drawings you see in 'La Vie Parisienne, but it takes something more than that to be a true officer. He's got to know the ropes at playing miner, bombarder, artilleryman, engineer, optician, accountant, caterer, undertaker, hygienist, carpenter, mason I can't tell you what all.
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