Introductory Course of Natural Philosophy for the Use of High Schools and AcademiesA.S. Barnes, 1881 - 530 pages |
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Page 100
... ray directed along the surfaces of the water in the two glass tubes will be a hori- zontal line , or a line of apparent level . In using the instrument , the square , seen at the left of the figure , can be raised or lowered to agree ...
... ray directed along the surfaces of the water in the two glass tubes will be a hori- zontal line , or a line of apparent level . In using the instrument , the square , seen at the left of the figure , can be raised or lowered to agree ...
Page 197
... ray of light from a hole in a darkened chimney , a few yards distant , is made to strike this mirror , and from this it is reflected to another mirror , which sends it to an achromatic , convergent lens ; this lens is so placed as to ...
... ray of light from a hole in a darkened chimney , a few yards distant , is made to strike this mirror , and from this it is reflected to another mirror , which sends it to an achromatic , convergent lens ; this lens is so placed as to ...
Page 198
... ray of light in its passage to the screen . Some varieties of curve are repre- sented in Fig . 171 . By the aid of these principles , tuning - forks can be compared with a standard fork with greater precision than would be the case with ...
... ray of light in its passage to the screen . Some varieties of curve are repre- sented in Fig . 171 . By the aid of these principles , tuning - forks can be compared with a standard fork with greater precision than would be the case with ...
Page 223
... rays , as well as from the influence of reflecting substances . Furthermore , it should be protected from winds and currents of air . - 278. The Differential Thermometers . - A DIFFER- ENTIAL THERMOMETER is a thermometer contrived to ...
... rays , as well as from the influence of reflecting substances . Furthermore , it should be protected from winds and currents of air . - 278. The Differential Thermometers . - A DIFFER- ENTIAL THERMOMETER is a thermometer contrived to ...
Page 233
... rays of the sun , it rises , and its place is supplied by colder air from the neighboring regions , thus producing the phenomena of winds . The circulation of the atmosphere in the form of winds tends to equalize the temperature , and ...
... rays of the sun , it rises , and its place is supplied by colder air from the neighboring regions , thus producing the phenomena of winds . The circulation of the atmosphere in the form of winds tends to equalize the temperature , and ...
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Common terms and phrases
acid action angle angle of incidence apparatus atmosphere axis ball balloon barometer battery body bulb called causes centre clouds coil colors condensed conductor copper cord cylinder density direction distance earth elastic electricity electrified Electroscope energy equal example expansion experiment falls feet force friction galvanometer gases glass gravity heliostat Hence Hygrometer illustrated by Figure inch instrument iron latent heat lens lenses lever Leyden jar light liquid machine magnet mercury metal Method mirror molecules motion needle number of vibrations object particles passes pendulum perpendicular piston placed plane plate polarized poles position pounds pressure principal focus principle produced quantity radiant rays reflected reflector refraction retina shown in Fig solid sound sound-waves specific gravity Specific Heat steam substances sulphuric acid surface telescope temperature tension thermometer tion tourmaline transmitted tricity tube vapor velocity velocity of sound vessel vibrations weight wheel wire zinc
Popular passages
Page 162 - A body immersed in a liquid is buoyed up by a force equal to the weight of the liquid displaced by it.
Page 163 - Archimedes stated that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid.
Page 23 - Every body continues in a state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by a force impressed upon it.
Page 7 - The FORM of a body is its external shape. Bodies may have the same magnitude and be very different in shape ; they may likewise be of the same form and yet be of very different magnitudes. Impenetrability. 7. IMPENETRABILITY is that property by virtue of which no two bodies can occupy the same place at the same time.
Page 218 - ... is made to indicate its own temperature without possibility of mistake. Liquid Thermometers. In the most common form of thermometer, temperature is measured by the expansion of mercury in glass. On the end of a glass tube of very fine bore, a bulb is blown (see Fig. 1), and the bulb and part of the tube are filled with mercury. The whole is then heated until the mercury completely fills the tube, after which it is sealed and allowed to cool. The space in the tube above the mercury is thus entirely...
Page 163 - The BAROSCOPE consists of a beam like that of a balance, from one extremity of which is suspended a hollow sphere of copper, and from the other extremity a solid sphere of lead. These are made to balance each other in the atmosphere. If the instrument be placed under the receiver of an air-pump and the air exhausted, the copper sphere will descend.
Page 340 - 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.
Page 192 - If two clocks, for example, with pendulums of the same period of vibration, be placed against the same wall, and if one of the clocks be set going and the other not, the ticks of the moving clock, transmitted through the wall, will start its neighbour.
Page 338 - LAB, is the plane of incidence. The angle that the refracted ray makes with the normal at the point of incidence is called the angle of refraction, and the plane of this angle is the plane of refraction / thus, the angle KA C is an angle of refraction, and the plane of this angle is a plane of refraction.
Page 249 - The heat which is expended in changing a body from the solid to the liquid state, or from the liquid to the gaseous state, is called latent heat.