Wright, Mark R., 1854- · London : Longmans · leaf 100
■■IIIIIIIIIIH^^^^^^^ Fig. 64, In gas reports, the standard candle is a sperm candle, 6 tothe pound, burning at the rate of 120 grains in an hour. To verify the laws of inverse squares.—Cut a piece of tinthe shape of fig. 65, B; turn up the edges at the dotted lines, and makefive holes, abcde. Place… … Fig. 6s. and solder them; fasten the tray to a rod by passing a tackthrough c. Cut five pieces of candle from the same candle ; place four ofthem on the tacks in abde, the fifth on a single stand ; trim care-fully, so that the wicks are all the same size and height; place four on 92 Light one side…
Physics
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