Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 205
shows refraction. The path ofthe light before reaching the water can be seen by irregularreflection from the dust diffused in the room. Reflectionfrom the molecules of the water shows the path of thelight in the water. The change of direction takes placeat the surface of the water. 685. Laws of… … 12tt)EX OF REFRACTION. 195 paring angles is required. A simpleapparatus is a square glass vesselused as shown by Fig. 220, for exam-ple, a square bottle, covered with stiffpaper, with a circle cut out on oneside. Two diameters, AB and DE,one horizontal and the other perpen-dicular, are then drawn,…
Physics
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