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Updated: May 22, 2025
His experiments were repeated by Morgan, Wollaston, and with far superior precision and diligence by Fraunhofer. The great Munich optician, whose work was completely original, rediscovered Melvill's deep yellow ray and measured its place in the colour-scale. It has since become well known as the "sodium line," and has played a very important part in the history of spectrum analysis.
Combining mathematical knowledge with mechanical ingenuity, and having the practical aid of the celebrated optician Tulley, he devised formulae for the combination of lenses of crown glass with others of flint glass, so adjusted that the refractive errors of one were corrected or compensated by the other, with the result of producing lenses of hitherto unequalled powers of definition; lenses capable of showing an image highly magnified, yet relatively free from those distortions and fringes of color that had heretofore been so disastrous to true interpretation of magnified structures.
"Why, I really don't quite recollect; but I feel very hungry," replied the optician, putting in his plate to receive two large slices; and father and son sat down to a hearty meal, proving the truth of the wise man's observation, that, "Better is a dinner of herbs where love is, than the stalled ox and hatred therewith." Whate'er it be, 'Tis wondrous heavy. Wrench it open straight.
It was the poems of Crashaw, an author he had never read but had always been intending to read. Outside, the driver of his cab was bunching up his head and shoulders together under a large umbrella, upon which the rain spattered. The flanks of the resigned horse glistened with rain. "You needn't talk about cruelty!" he remarked, staring hard at the signboard of an optician opposite.
He has heard it said that the chance arrangement of two pairs of spectacles, in the shop of a Dutch optician, gave the direction for constructing the first telescope. Possibly, in time, say a few geological ages, it might in some optician's shop have brought about a combination of flint and crown glass which, together, should have been achromatic.
When he had finished, his uncle, who had listened with profound attention, his eye fixed upon that of Newton, as if to read his inmost thoughts, said, "It appears, then, that your father wishes to prosecute his business as optician. I am afraid that I cannot help him. I wear spectacles certainly when I read; but this pair has lasted me eleven years, and probably will as many more.
We use double-glazed sashes with an air space between on all windows in our houses in Alaska and find ourselves no longer incommoded by frost on the panes; some adaptation of this principle should be within the skill of the optician and would remove a very troublesome defect in all snow-glasses.
One hundred and twenty-two voters, according to the register, lived at another house, including nine agents, nine machinists, nine gentlemen, nine waiters, nine salesmen, four barbers, four bakers, fourteen clerks, three laborers, two bartenders, a milkman, an optician, a piano-mover, a window-cleaner, a nurse, and so on.
A materialistic friend suggested that he was adjusting the focus of his wonderful eyes, and the action was certainly like that of an optician examining a lens; but I feel that there was something more ceremonial about it. This punctiliousness cost him his dinner once. I was curious to know what he would do with a mouse, so, having caught one alive, I slipped it quietly into his cage.
Last of all, an aged Japanese optician, who assumes a most knowing air, a look of sublime wisdom, goes off to forage in his back shop, and brings to light a steam fog-horn, a relict from some wrecked steamer. After dinner, the chief event of the evening is a deluge of rain, which takes us by surprise as we leave the teahouses, on our return from our fashionable stroll.
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