A Laboratory Manual in Physics: To Accompany Black and Davis' "Practical Physics for Secondary Schools,"

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Macmillan, 1913 - 117 páginas
 

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Página 56 - Grasp the coil with the right hand so that the fingers point in the direction of the current in the coil, and the thumb will point to the north pole of the coil (Fig.
Página 85 - Connect the object-point, 0, with the image-point, /, making it solid in front of the mirror and dotted behind the mirror. Indicate the direction in which light travels along the lines by arrows, as in Fig. 56. At one of the points of reflection erect a normal, that is, a perpendicular to the mirror, and label the angle between the incident ray and this normal the angle of incidence, and the angle between the reflected ray and the normal the angle of reflection. Distance of object from mirror cm....
Página 113 - This textbook may be borrowed for two weeks, with the privilege of renewing it once. A fine of five cents a day is incurred by failure to return a book on the date when it is due. The Education Library is open from 9 to 5 daily except Saturday when it closes at 12.30.
Página viii - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Página 96 - The magnifying power of a simple microscope is the ratio of the size of the image to the size of the object.
Página 99 - These two lenses thus arranged constitute the essential parts of a very crude astronomical telescope. Measure the distance between the lenses and compare this distance with the sum of the focal lengths. To measure the magnifying power of the telescope, fasten on the opposite wall of the room — a strip of white paper with a series of thick black lines drawn across it at regular intervals of about one inch. Be sure...
Página 55 - Grasp the wire with the right hand so that the thumb points in the direction of the current, the fingers then will point in the direction of the magnetic field around the wire.
Página 100 - Take away the translucent screen and observe the image of the wire netting through the eye-piece. Make a simple diagram to show the relative positions of the eye, the two lenses, and the object. Problem. A telescope has an objective of 30 ft. focal length and an eye-piece of 1 in. focal length. What is its magnifying power ? EXPERIMENT 50 DISPERSION OF LIGHT BY A PRISM How may white light be separated into the primary colors by'a prism ? Triangular 60° prism.
Página 6 - ... 12 PRINCIPLE OF MOMENTS With four or more spring balances apply parallel forces at various points on a rod so as to produce equilibrium. How does the sum of the forces operating in one direction compare with the sum of the forces operating in the opposite direction? How does the sum of the moments tending to produce clockwise rotation compare with the sum of the moments tending to produce counter-clockwise rotation ? Does this relation of moments depend upon the point selected as the axis of...
Página 42 - EXERCISES required to heat one pound or one gram of water one degree than is required to heat one pound or one gram of iron one degree.

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