Colour Vision
Colour Vision
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In our eReader you can find the full English version of the book. Read Colour Vision 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 Colour Vision
What reading level is Colour Vision book?
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78-0 After 7 min. 28 sec. . . . . 89'0 After 8 min. 32 sec 96-0 After 10 min. 46 sec 103-0 After 12 min. . . . . 103-0 (For convenience the first reading is unity ; the other numbers are the inverse of the extinction value. ) The eye apparently, under the conditions in which these observations were made, was at least 100 times more sensitive to very faint light after twelve minutes than it was at the beginning, and that then concordant readings could be made. It will now be quite under- stood t...hat before any serious measures can be made this interval must elapse, and also that the light, finding its way to the end of the box to illuminate the spot, should never be strong, otherwise the eye might lose its sensitiveness.
( 122 ) CHAPTEE X.
BEFORE considering the subject of the extinction of light by other types of colour vision, attention must be called to what has already been brought before you. The various colours of the spectrum have to be reduced to the following amounts before they suffer extinction, the orange light at D being of the value of one candle.
What to read after Colour Vision?
You can find similar books in the "Read Also" column, or choose other free books by William De Wiveleslie Abney to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
78-0 After 7 min. 28 sec. . . . . 89'0 After 8 min. 32 sec 96-0 After 10 min. 46 sec 103-0 After 12 min. . . . . 103-0 (For convenience the first reading is unity ; the other numbers are the inverse of the extinction value. ) The eye apparently, under the conditions in which these observations were made, was at least 100 times more sensitive to very faint light after twelve minutes than it was at the beginning, and that then concordant readings could be made. It will now be quite under- stood t...hat before any serious measures can be made this interval must elapse, and also that the light, finding its way to the end of the box to illuminate the spot, should never be strong, otherwise the eye might lose its sensitiveness.
( 122 ) CHAPTEE X.
BEFORE considering the subject of the extinction of light by other types of colour vision, attention must be called to what has already been brought before you. The various colours of the spectrum have to be reduced to the following amounts before they suffer extinction, the orange light at D being of the value of one candle.
What to read after Colour Vision?
You can find similar books in the "Read Also" column, or choose other free books by William De Wiveleslie Abney to read onlineMoreLess
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