Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 840
ll silver concave mirror with a radiusof about a metre is connected withit. The light of a petroleum lamp,not represented in the figure, strikesagainst this, and is reflected as aspot on a horizontal scale. Anydeflection of the needle, either onone side or the other, is indicatedby the motion of…
Physics
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