A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)
Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 202
will, one part after another, wheel to the right until,when the whole front has entered the marsh, it will havethe new direction shown by the line AB. Substitutefor the column of troops a beam of light, and for the marsha highly refractive transparent substance, and one mayget some notion as to how… … or some other transparent medium, below the line. Aray of light R^ may come from beneath to the surface at i8o PHYSICS. such an angle with the normal that it will after refractionat 0 be parallel to the refracting surface. The ray R2,coming up to 0 at a larger angle with the normal, will notpass…
Physics
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