Scientific amusements . Experiment on * centre of gravity. contact between the end of the egg and the surface onwhich it rests. Here is a curious experiment in equilibrium, which isperformed with great facility. Two forks are stuck into acork, and the cork is placed on the brim of the neck of abottle. The forks and the cork form a whole, of which thecentre of gravity is fixed over the point of support. Wecan bend the bottle, empty it even, if it contains fluid, with-out the little construction over its mouth being in the least 42 SIMPLE PHYSICS. disturbed from its balance. The vertical line of
Scientific amusements . Experiment on * centre of gravity. contact between the end of the egg and the surface onwhich it rests. Here is a curious experiment in equilibrium, which isperformed with great facility. Two forks are stuck into acork, and the cork is placed on the brim of the neck of abottle. The forks and the cork form a whole, of which thecentre of gravity is fixed over the point of support. Wecan bend the bottle, empty it even, if it contains fluid, with-out the little construction over its mouth being in the least 42 SIMPLE PHYSICS. disturbed from its balance. The vertical line of the centreof gravity passes through the point of support, and theforks oscillate with the cork, which serves as their support,thus forming a movable structure, but much more stablethan one is inclined to suppose. This curious experiment. Another experiment on the same sulject. is often perfoimed by conjurors, who inform their audiencethat they will undertake to empty the bottle withoutdisturbing the cork. If a woodcock has been served fordinner, or any other bird with a long beak, take off thehead at the extreme end of the neck ; then split a cork sothat you can insert into it the neck of the bird, whichmust be tightly clipped to keep it in place ; two forks are AUlUMAiA. 43 then fixed into the cork, exactly as in the precedingexample, and into the bottom of the cork a pin is little contrivance is next placed on a piece of money,which has been put on the opening of the neck of thebottle, and when it is balanced, we give it a rotatory
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
