Inhaltsangabe
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. 1918 Excerpt: ...farther from the surface of the water than it really is? Explain. 6. Why do objects viewed through ordinary window glass appear distorted? Diagram.--Draw a neat diagram of the tumbler containing the coin and water. Draw the coin where it actually was on the bottom of the tumbler, and also, by dotted lines, where it appeared to be when the water was added. Draw a straight line from the apparent position of the coin directly over the rim of the tumbler to the eye. Label this line, "Apparent path of light from coin to eye." Draw another line from the coin directly to the point where the apparent path left the surface of the water, and from this point to the eye. Label this beam, "Actual path of light to eye." Also write the word " eye " in its proper place. No. 52. EXPERIMENT Purpose.--To learn what is meant by dispersion of light. Materials. Method. Conclusions.--1. Since the only light which traveled through the prism was sunlight (white light), what does a prism do to sunlight? 2. Define dispersion, considering that what the prism did to the sunlight was a typical example. Diagram.--Draw a neat diagram of the prism showing the path of the beam of sunlight through it, getting wider the farther it goes from the prism. Write the word vibgyor, indicating the different colors of the spectrum, wolet, indigo, Mue, green, yellow, orange, red, in its proper place on the diagram, to indicate how the colors are separated by the prism. The red is bent least in passing through the prism, and the violet most. No. 53. EXPERIMENT Purpose.--To learn how colors may be built up from other colors. Materials. Method. Conclusion.--Since the final color produced was due to the addition or combination of the different colors, how could sunlight be pro...
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