A Natural Philosophy: Embracing the Most Recent Discoveries in the Various Branches of Physics |
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air-pump angle apparatus applied atmosphere atmospheric pressure attraction axis balance ball barometer battery body bottom called carbonic acid centre of gravity centrifugal force circumference clepsydra condensed conductor connected cubic cubic foot cylinder descend Describe direction discharged distance earth earth's surface effect elastic electricity equal experiment fall feet fluid friction fulcrum Give an example glass greater heat Illustrate inches inclined plane increased india rubber instrument iron kind lever Leyden jar light liquid machine magnet matter mercury metals miles mirror motion movable pulleys move needle orbit orifice particles pass pendulum piece piston planet plate pole pounds pressure principle produced pulley raised rays reflected represented in Fig resistance rest revolve rise round screw shown in Fig side solid specific gravity steam substance suspended temperature thrown tion tricity tube turned valve velocity vessel vibrations wedge weight wheel and axle wire
Popular passages
Page 26 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Page 26 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Page 165 - The marine barometer has not yet been in general use for many years, and the author of this work was one of a numerous crew who probably owed their preservation to its almost miraculous warning. It was in a southern latitude ; the sun had just set with placid appearance, closing a beautiful afternoon, and the usual mirth of the evening watch was proceeding, when the captain's order came to prepare with all haste for a storm. The barometer had began to fall with appalling rapidity.
Page 77 - Friction is the resistance which a moving body meets with from the surface on which it moves. If all surfaces were perfectly smooth, there would be no friction ; but even those bodies that seem the smoothest are really covered with minute projections and depressions.
Page 384 - A man placed on one of them would spring with ease 60 feet high, and sustain no greater shock in his descent than he does on the earth from leaping a yard. On such planets giants might exist; and those enormous animals, which on earth require the buoyant power of water to counteract their weight, might there be denizens of the land.
Page 86 - Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 19 - VELOCITY. — The Velocity of a body is the rate at which it moves. This rate is determined by the space it passes over in a given time. The greater the space, the greater the velocity. Thus, if A walks two miles an hour, and B four, B's velocity is twice as great as A's.
Page 26 - A circle is a plane figure contained by one line, which is called the circumference, and is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another : 16. And this point is called the centre of the circle.