. Light, a textbook for students who have had one year of physics. r- Figure 10 if it came from i*7, the violet as if itand the intermediate colors as if they origi-nated at points intermediate between r and v. Instead ofdoing this, he allowed the light to proceed to the white screen,forming a red spot at r, a violet spot at v, etc. Since; thepencil of light coming from the sun through a small hole israther narrow, including an angle of only about one-half de-gree, there was not much overlapping of the colors, and thewhole colored band showed the intermediate, as well as theextreme colors, fai
. Light, a textbook for students who have had one year of physics. r- Figure 10 if it came from i*7, the violet as if itand the intermediate colors as if they origi-nated at points intermediate between r and v. Instead ofdoing this, he allowed the light to proceed to the white screen,forming a red spot at r, a violet spot at v, etc. Since; thepencil of light coming from the sun through a small hole israther narrow, including an angle of only about one-half de-gree, there was not much overlapping of the colors, and thewhole colored band showed the intermediate, as well as theextreme colors, fairly pure. Newton called this band of colora spectrum, and in technical language it is further defined asa real spectrum because the light actually passes through it,or at least to it, as distinguished from the so-called virtualspectrum, seen in the apparent position rV when one looksinto the prism. The light does not actually pass through merely enters the eye as if it came from there. There ismuch less overlapping of colors in the virtual than in the rea
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectlight, bookyear1921
