Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 236
areinclined at an angle of 60, as in the present case, the object,<■, together with the five reflected images, will form a hexag- LIGHT. 213 onal figure of great beauty, which may be changed an infin-ite number of times by turning the instrument so as to causethe bits of glass, etc., to fall… … I, Parts of Kaleidoscope. 2, The Figure. 3, Kaleidoscope. in the sector diametrically opposite the object are formed bythird reflections. In most kaleidoscopes a third mirror is added, whichmultiplies the effects, and in the best instruments an eyelens of low power is provided. ANALYSIS AND…
Physics · Lantern projection · Electric apparatus and appliances
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