This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 Excerpt: ...color combinations is likely to be required. Knowing that it had long been laid down in the books that the solar spectrum furnishes a perfect standard of the six colors, certain students of this color question on its artistic, scientific and practical sides resolved, some months since, to appeal to old Sol himself for ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 Excerpt: ...color combinations is likely to be required. Knowing that it had long been laid down in the books that the solar spectrum furnishes a perfect standard of the six colors, certain students of this color question on its artistic, scientific and practical sides resolved, some months since, to appeal to old Sol himself for such a standard as their fellow students should be willing to accept and adopt. The results of the experiments which they made as a means of investigating this problem have proved, on the whole, very satisfactory to themselves, and for that reason it is proposed to give a brief account of them here. It has been generally stated that if a piece of colored paper is held in the spectrum partially covering the width of the band the correspondence or difference in color will at once be determined. In other words, that if the paper is a true match the spectrum color will show the same color on the sample as on the white screen, and if it is not a true match a difference will be easily detected. The first part of this statement can not be questioned, but to the ordinary eye the latter part is not true in practice, unless there is a decided difference in the colors. The above very simple test failing, we were obliged to adopt some other method of deciding when we had secured a true match to the spectrum. The principle of the spectrum and method of producing it have been explained in Chapter II. In order that the teacher may understand the nature of the experiments to be described we will assume that we have the darkened room with a porte lumiere in our window and have our spectrum thrown on a white screen, at a convenient point in the room. Now if we could see the color of our paper sample in the dark room the problem of how to make the comparison wou...
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Add this copy of Color in the School-Room: a Manual for Teachers [1890 ] to cart. $39.01, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2009 by Cornell University Library.
Add this copy of Color in the School-Room: a Manual for Teachers to cart. $58.41, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
Add this copy of Color in the School-Room: a Manual for Teachers [1890 ] to cart. $69.71, new condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2009 by Cornell University Library.