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according Acid acts altitude angle application assume atmosphere attraction axis ball barometer base becomes body called cause centre of gravity column combination communication consequently contains continue cord cylinder density depends depth described direction distance earth effect elastic equal equilibrium exerted experiment fall feet figure fluid force former friction give glass greater Hence inches inclined increases latter laws length less lever liquid lower manner mass means measure mercury metal motion move nature observed obtained opposite particles pass pendulum plane plate portion position pressure produced proportion receiver represented resistance rest scale side similar solid sound space specific gravity square stand strength substances supported Suppose surface tube undulation various velocity vessel vibrations volume wave weight wheel whence whilst
Page 18 - To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.
Page 18 - Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
Page 106 - The lever, the pulley, the wheel, and axle, the inclined plane, the wedge, and the screw.
Page 73 - Trans. 1813) ingeniously proposed to consider the primitive particles as spheres which, by mutual attraction, have assumed that arrangement which brings them as near as possible to each other. When a number of similar balls are pressed together in the same plane...
Page 6 - Of these creatures, which for the most part we can see only by the aid of the microscope, there exist many species so small that millions piled on. each other would not equal a single grain of sand, and thousands might swim at once through the eye of the finest needle. The coats-of-mail and shells of these animalcules exist in such prodigious quantities on our earth that, • according to Ehrenberg's investigations, pretty extensive Ehrenberg's strata of rocks, as, for instance, the smooth slate...
Page 6 - ... of matter are far surpassed by the minuteness of animalcules, for whose natural history we are indebted chiefly to the researches of the renowned Prussian naturalist, Ehrenberg. He has shown that there are many species of these creatures, so small that millions together would not equal the bulk of a grain of sand, and thousands might swim at once through the eye of a needle. These infinitesimal animals are as well adapted to life as the largest beasts, and their motions display all the phenomena...
Page 142 - Face, is equal to the Weight of a. Column of the Fluid, whose Base is the Plane...