An Introduction to Natural Philosophy: Designed as a Text-book for the Use of Students in CollegeCollins Brother, 1882 - 495 Seiten |
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angle angle of incidence attraction axes axis beam body called centre of gravity centrifugal force charge circuit coil color components conductor convex convex lens cylinder DENISON OLMSTED density diameter diminished direction distance earth elastic electricity electromotive force equal equilibrium fall feet per second friction galvanometer given glass heat Hence inches inclined plane increase induced intensity iron length lens lever light liquid machine magnet mass mercury mirror momentum motion move needle opposite parallel particles passing pendulum perpendicular pipe piston plate pole pressure principle of moments produce radius ratio rays reflected refracted represent resistance resultant revolve rope screw side similar triangles sine sound space specific gravity substances Suppose surface temperature tension tion triangle tube velocity vibrations wave weight wheel wire
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Seite 48 - Weighted average is used in this report to indicate discharge-weighted average. It is computed by multiplying the discharge for a sampling period by the concentrations of individual constituents for the corresponding period and dividing the sum of the products by the sum of the discharges.
Seite 446 - The strength of the current is proportional to the tangent of the angle of deflection.
Seite 27 - The sides of a triangle are proportional to the sines of the opposite angles.
Seite 288 - ... directions at right angles to each other and to the direction of propagation. The light is then said to be polarised.
Seite 270 - The primary bow is narrower and brighter than the secondary, and when of unusual brightness, is accompanied by supernumerary bows, as they are called; that is, narrow red arches just within it, or overlapping the violet; sometimes three or four supernumeraries can be traced for a short distance. The common centre of the bows is in a line drawn from the sun through the eye of the spectator.
Seite 246 - ... perpendicular to the surface ; and in passing out of a denser into a rarer medium, it is refracted from the perpendicular.
Seite 8 - Newton's first law, which states that a body at rest tends to remain at rest, and a body in motion tends to remain in motion in a straight line at a constant speed, unless it is acted on by a force.
Seite 185 - Newton formulated many laws of physics and is credited with this one, "the velocity of propagation of a pulse in an elastic body is directly proportional to the square root of the elasticity, and' inversely proportional to the square root of the density.
Seite 103 - K is a function of the mass and distribution of the particles composing the body called the " moment of inertia " of the body with respect to the axis of rotation.
Seite 184 - Velocity of Sound in Air. — Sound occupies an appreciable time in passing through air. . This is a fact of common observation. The flash of a distant gun is seen before the report is heard. Thunder usually follows lightning after an interval of many seconds; but if the electric discharge is quite near, the lightning and thunder are almost simultaneous. If a person is hammering at a distance, the perceptions of the blows received by the eye and the...