Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 189
set of brass weights. No. XVIII. Well-made small brass pulley with a hook or loop.(Fig. 37.) 1Y6 PHYSICS. No. XIX. Well-made small double brass pulley with hook or loop.(Fig. 38.) No. XX. An inclined plane,* shown about one-fourth natural sizein Fig. 123. The roller should be of brass, accurately… … Fig. 123. No. XXII. Three small packages of dyestuffs soluble in water,various colors. No. XXIII. Three glass plates, red, green, and blue, about 10 cm.square. No. XXIV. Camera obscura consisting of two pasteboard tubeseach about 25 cm. long. The larger, about 5 cm. in diameter, isclosed at one end…
Physics
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