A Laboratory Manual in Physics: To Accompany Black and Davis' "Practical Physics"Macmillan, 1913 - 113 páginas |
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Página 55
... pole is turned toward the south . Trace around the bar magnet with a pencil and mark the position of its poles with the letters N and S. Indicate with dots the starting points of about a dozen lines of magnetic force , grouping them ...
... pole is turned toward the south . Trace around the bar magnet with a pencil and mark the position of its poles with the letters N and S. Indicate with dots the starting points of about a dozen lines of magnetic force , grouping them ...
Página 56
... pole notch in the rim . Move the compass in the direc- tion in which the N - pole points until the S - pole notch lies exactly over the mark that has just been made . Then turn as before the compass about this point until the needle ...
... pole notch in the rim . Move the compass in the direc- tion in which the N - pole points until the S - pole notch lies exactly over the mark that has just been made . Then turn as before the compass about this point until the needle ...
Página 60
... pole of the magnetic needle points in the direction of the magnetic lines of force and that the direction in which the electricity flows through a zinc - copper ( or zinc- carbon ) cell is from zinc to copper ( or carbon ) inside the ...
... pole of the magnetic needle points in the direction of the magnetic lines of force and that the direction in which the electricity flows through a zinc - copper ( or zinc- carbon ) cell is from zinc to copper ( or carbon ) inside the ...
Página 62
... pole of the coil . ( c ) Make an electromagnet by putting a large iron nail or bolt inside the helix . Does this iron core make the poles stronger or weaker than before ? How do you know ? ( d ) Wind the two sides of the U - shaped ...
... pole of the coil . ( c ) Make an electromagnet by putting a large iron nail or bolt inside the helix . Does this iron core make the poles stronger or weaker than before ? How do you know ? ( d ) Wind the two sides of the U - shaped ...
Página 63
... poles . The coil is suspended so that the plane of the coil is parallel to the line joining the poles , but when a current , even a very slight current , is sent through the coil , it is turned because it acts as an electro- magnet and ...
... poles . The coil is suspended so that the plane of the coil is parallel to the line joining the poles , but when a current , even a very slight current , is sent through the coil , it is turned because it acts as an electro- magnet and ...
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Términos y frases comunes
30 copper wire ammeter amperes angle apparatus average binding posts block of wood boiler calories calorimeter candle power cathode centimeter circuit coils in parallel coils in series column Compare compass compute Connect convex lens copper plate D'Arsonval galvanometer Daniell cell distance drop in potential dry cells effect electric ELECTROMOTIVE FORCE equal EXPERIMENT fall of potential focal length friction fulcrum galvanometer galvanoscope German silver German silver wire glass grams heat high resistance image-point induced current internal resistance known resistance laboratory lamp lens lever liquid load magnetic field measure mercury metal meter stick minute motor N-pole needle object ohms paper plane poles position pressure Problem reading record the deflection revolutions per minute screen shown in Fig sight lines solid SPECIFIC GRAVITY spring balance steam storage battery strip tabular form thermometer tube tumbler tuning fork vibrations voltage voltmeter volume Weight of water Wheatstone bridge zinc
Pasajes populares
Página 2 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Página 79 - Assuming that the plane of the coil is parallel to the magnetic field...
Página 89 - REFLECTORS has the greater candle power. Furthermore, since the intensity of illumination decreases as the square of the distance, the candle powers of the two lamps are directly proportional to the squares of their distances from the screen. For example, let 16 = candle power of lamp S, and X = candle power of lamp X.
Página 62 - Compare these results with what might be expected from the thumb rule for a coil. G-rasp 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.
Página 61 - Fig. 260) — if one grasps the wire with the right hand so that the thumb points in the direction of the current, the fingers will point in the direction of the magnetic field.
Página 48 - A calorie is the amount of heat needed to raise the temperature of one gram of water one degree Celsius.
Página 91 - ... and the angle between the reflected ray and the normal the angle of reflection.
Página 102 - The magnifying power of a simple microscope is the ratio of the size of the image to the size of the object.
Página 54 - Read the thermometer from time to time; and, as it approaches a temperature as much above that of the room as the initial temperature was below, prepare to break the current.