Curiosities of Light And Sight
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What reading level is Curiosities of Light And Sight book?
To quickly assess the difficulty of the text, read a short excerpt:
A beautiful example is that presented by the pair of short bright spectra formed upon the screen when a double slit is used shaped like the letter V.
The gorgeously coloured V seems to stand out in strong relief like a pair of inclined boards, the nearer edges being red, the farther ones violet. (See Fig. 14.) In many other ways, and with little or no apparatus, any one may easily SOME 0PTI04L DEFECTS OF THE EYE. 103 convince himself that the different con- stituents of white light are not equa...lly refracted by the lenses of the eye. Look, for instance, at the incandescent filament Fig. 14. — Spectrum formed with V-shaped Slit.
of an electric lamp through a piece* of common dark blue cobalt glass, which has the property of obstructing the coloured rays corresponding to the middle of the spectrum, while transmitting the red and * Or through several pieces superposed.
104 .CURIOSITIES OP LIGHT AND SIGHT.
the_ blue. Seen from a distance of only a few inctes, the filament appears to be pale blue with a bright red border, the blue rays being perfectly focussed, while the red form diffusion circles.
What to read after Curiosities of Light And Sight?
You can find similar books in the "Read Also" column, or choose other free books by Bidwell, Shelford, 1848-1909 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A beautiful example is that presented by the pair of short bright spectra formed upon the screen when a double slit is used shaped like the letter V.
The gorgeously coloured V seems to stand out in strong relief like a pair of inclined boards, the nearer edges being red, the farther ones violet. (See Fig. 14.) In many other ways, and with little or no apparatus, any one may easily SOME 0PTI04L DEFECTS OF THE EYE. 103 convince himself that the different con- stituents of white light are not equa...lly refracted by the lenses of the eye. Look, for instance, at the incandescent filament Fig. 14. — Spectrum formed with V-shaped Slit.
of an electric lamp through a piece* of common dark blue cobalt glass, which has the property of obstructing the coloured rays corresponding to the middle of the spectrum, while transmitting the red and * Or through several pieces superposed.
104 .CURIOSITIES OP LIGHT AND SIGHT.
the_ blue. Seen from a distance of only a few inctes, the filament appears to be pale blue with a bright red border, the blue rays being perfectly focussed, while the red form diffusion circles.
What to read after Curiosities of Light And Sight?
You can find similar books in the "Read Also" column, or choose other free books by Bidwell, Shelford, 1848-1909 to read onlineMoreLess
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