Hand-books of Natural Philosophy and Astronomy, Svazek 1Blanchard and Lea, 1859 |
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adhesion already explained applied atmosphere atoms attraction axis axle ball barometer centre of gravity centrifugal force CHAP cohesion column common compressed consequently cord cylinder depth descend determined diagonal diameter diminished distance effect elasticity equal equilibrium example expressed fall feet fluid force of gravity forces acting friction glass greater imparted inclined plane increased inertia length less lever liquid machine magnitude manner mass matter mechanical mercury metal momentum moving force nodal lines orifice oscillation parallel parallelogram particles passing pendulum perpendicular piston placed plate pores porosity position power and weight pressure principal axes principle produced proportion pulley quantity quicksilver rarefaction represented in fig resistance rest resultant revolve round rope screw side single force solid bodies solid of revolution space specific gravity square inch strike string substance supported suppose surface suspended tendency thread tion tube upwards velocity vessel vibration waves wheel
Oblíbené pasáže
Strana 693 - When a ray of light passes from one medium to another, it is refracted so that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities in the two media.
Strana 745 - Museum of Science and Art. THE MUSEUM OF SCIENCE AND ART. Edited by DIONYSIUS LARDNER, DCL, formerly Professor of Natural Philosophy and Astronomy in University College, London. With upwards of 1 200 Engravings on Wood.
Strana 169 - It is better, on this account, in graduating the bottle, to make two scratches as represented in the drawing, one at the top and the other at the bottom of the curve : this prevents any future mistake.
Strana 742 - A new edition, with numerous illustrations; together with a general history of the Horse; a Dissertation on the American Trotting Horse ; how Trained and Jockeyed; an Account of his Remarkable Performances; and an Essay on the Ass and the Mule.
Strana 102 - When a perfectly elastic body strikes a hard surface and rebounds from it, the angle of incidence will be equal to the angle of reflection, and.
Strana 520 - When a ray of light passes from a rarer into a denser medium, it is bent towards the perpendicular, and from a denser into a rarer from the perpendicular, which is by no means generally true.
Strana 746 - First American edition, with a Glossary and other Additions and Improvements; from the second English edition. Translated from the sixth German edition, by HENRY MEDLOCK, FCS, &c.
Strana 218 - ... the water in the cistern. This ball is connected with a lever acting upon some part of the machinery, which controls the power or regulates the amount of resistance, as already explained in the case of the governor.
Strana 345 - The following rules may to some extent be relied upon, but even these are subject to much uncertainty. 1. Generally the rising of the mercury indicates the approach of fair weather, the falling of it shows the approach of foul weather. 2. In sultry weather, the fall of the mercury indicates coming thunder. In winter the rise of the mercury indicates frost. In frost, its fall indicates thaw, and its rise indicates snow.