Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 631
-eral important substances. Water 1.33 Canada Balsani . . . 1.54 Sea Water ..... 1.31 Rock Salt 1.51 Alcohol 1.37 Glass, Crown . . 1.51 to 1.51 Turpentine 1.17 Flint . . 1.56 to 1.78 Linseed Oil .... 1.18 Diamond . . . 2.17 to 2.75 Carbon Bisulphide . . 1.6S Lead Chromate . 2.5 to 2.97 Air 1.00029… … Fig. 426. in the center than at-the edge are called positive lenses, andthose which have the edges thicker than the center are callednegative lenses. The for-mer may produce a realimage of an object, butthe second never can.Some of the commonforms of both types areshown in Fig. 426. To investigate…
Physics
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
