Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 375
ou imagine a gun made of rubber;as soon as the powder was fired, the rubber gunwould bulge out around the powder chamber onlyto collapse to its normal size when the pressure 812 GUNS AND SUPER-GUNS [July, was relieved by the discliarge of the bullet. Now,every elastic body has what is called its… … OIL-TEiOERINC THE LINING OF A BIG GUN is its elastic limit. The same is true of a pieceof steel; if you stretch it beyond a certain point,it will not return to its original shape. Whenthe charge of powder in a cannon is heavier thana certain amount, it stretches the steel beyond itselastic limit,…
Children's literature
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