The Hunterian Lectures On Colour Vision And Colour Blindness Delivered Before T
The Hunterian Lectures On Colour Vision And Colour Blindness Delivered Before T
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In our eReader you can find the full English version of the book. Read The Hunterian Lectures On Colour Vision And Colour Blindness Delivered Before T 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 The Hunterian Lectures On Colour Vision And Colour Blindness Delivered Before T
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If a person with considerable shortening of the red end of the spectrum is shown a pink which is made up of a mixture of red and violet, the red consisting of rays occupy- ing the missing portion of the spectrum, only the violet is visible to him, and so the pink appears a violet without a trace of red. This pink is there- fore matched with a violet or blue very much darker than itself.
ON COLOUR-VISION 37 Mistakes which are due to shortening of the spectrum may be remedied if we subtract the r...ays occupying the missing portion from the colour of confusion. For instance, if we take a blue and a pink which have been put together as identical by a person with a shortened red end of the spectrum, and look at them through a glass w^hich is opaque to the red, but transparent to the remaining rays of the spectrum, both will appear alike in hue and shade. A person with considerable shortening of the red end of the spectrum will look at a red light (which is so dazzlingly bright to a normal-sighted person as to make his eyes ache after looking at it closely for a few seconds), at a distance of a few inches, and remark that there is nothing visible, and that the whole is absolutely black.
What to read after The Hunterian Lectures On Colour Vision And Colour Blindness Delivered Before T?
You can find similar books in the "Read Also" column, or choose other free books by Frederick William Edridge Green to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If a person with considerable shortening of the red end of the spectrum is shown a pink which is made up of a mixture of red and violet, the red consisting of rays occupy- ing the missing portion of the spectrum, only the violet is visible to him, and so the pink appears a violet without a trace of red. This pink is there- fore matched with a violet or blue very much darker than itself.
ON COLOUR-VISION 37 Mistakes which are due to shortening of the spectrum may be remedied if we subtract the r...ays occupying the missing portion from the colour of confusion. For instance, if we take a blue and a pink which have been put together as identical by a person with a shortened red end of the spectrum, and look at them through a glass w^hich is opaque to the red, but transparent to the remaining rays of the spectrum, both will appear alike in hue and shade. A person with considerable shortening of the red end of the spectrum will look at a red light (which is so dazzlingly bright to a normal-sighted person as to make his eyes ache after looking at it closely for a few seconds), at a distance of a few inches, and remark that there is nothing visible, and that the whole is absolutely black.
What to read after The Hunterian Lectures On Colour Vision And Colour Blindness Delivered Before T?
You can find similar books in the "Read Also" column, or choose other free books by Frederick William Edridge Green to read onlineMoreLess
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