Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 310
etting fire to inflammable materials. Thiseffect may result from spherical vessels of glass filled with water,which possess all the properties of lenses. Do concave lenses magnify or diminish objects? (303.) How are rays of heataffected by lenses ? What is a burning-glass t Explain its action.… … Fie. 200. crosses the meridian, the rays are concentrated upon the vent, andif the gun has been loaded and primed beforehand, it will be dis-charged at midday. Light-houses. 304. Light-iiocses arc towers, erected along the coast,upon the tops of which are lanterns. These lanterns arelighted at…
Physics
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