Practical Exercises in Physiological Optics
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In our eReader you can find the full English version of the book. Read Practical Exercises in Physiological Optics Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Practical Exercises in Physiological Optics
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2 113 Sodium 5897) _ , , , ..
Sodium 5891}°'"'"^"'"^°"^^"''"' Thallium 5351 A yellowish green Strontium 4609 Blue Mercury.
(A globule of mercury enclosed in a vacuum tube.) {57881 Citron lines (5768) A pair 5460 Green. Very brilliant 4357 Deep blue *V. 3. The Spectroscopic Method of Measuring Colour Sensations.
This method, which has been described in my papers in the Philosophical Transactions, B. vol. 191, 1899, p. I, and B. vol. 199, 1907, p. 231, depends on the fact that coloured light of q...uite moderate intensity rapidly induces a very noticeable degree of temporary colour-blindness if it occupies the entire visual field.
This may be experienced by holding the eye near a large piece of scarlet cloth lying in the sun, I therefore employ a spectroscope of considerable power, so that not more than one-tenth part of the spectrum is visible at one time. The eyepiece must be one having a wide field of view, and the spectrum, instead of occupying a narrow ribbon in the middle of the field, must fill it from top to bottom as well as from side to side.
What to read after Practical Exercises in Physiological Optics?
You can find similar books in the "Read Also" column, or choose other free books by George James Burch to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
2 113 Sodium 5897) _ , , , ..
Sodium 5891}°'"'"^"'"^°"^^"''"' Thallium 5351 A yellowish green Strontium 4609 Blue Mercury.
(A globule of mercury enclosed in a vacuum tube.) {57881 Citron lines (5768) A pair 5460 Green. Very brilliant 4357 Deep blue *V. 3. The Spectroscopic Method of Measuring Colour Sensations.
This method, which has been described in my papers in the Philosophical Transactions, B. vol. 191, 1899, p. I, and B. vol. 199, 1907, p. 231, depends on the fact that coloured light of q...uite moderate intensity rapidly induces a very noticeable degree of temporary colour-blindness if it occupies the entire visual field.
This may be experienced by holding the eye near a large piece of scarlet cloth lying in the sun, I therefore employ a spectroscope of considerable power, so that not more than one-tenth part of the spectrum is visible at one time. The eyepiece must be one having a wide field of view, and the spectrum, instead of occupying a narrow ribbon in the middle of the field, must fill it from top to bottom as well as from side to side.
What to read after Practical Exercises in Physiological Optics?
You can find similar books in the "Read Also" column, or choose other free books by George James Burch to read onlineMoreLess
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