A System of Mechanical Philosophy, Bindi 4J. Murray, 1822 - 50 síður |
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Síða 10
... conductor , or substance which allows the electricity to pass through it , can be made electric by any of the means which produce that effect in insulators . And it is well known , that the electricity of electrics is vastly more ...
... conductor , or substance which allows the electricity to pass through it , can be made electric by any of the means which produce that effect in insulators . And it is well known , that the electricity of electrics is vastly more ...
Síða 11
... conductors . 15. Let us now suppose a body N S ( fig . 2. ) , containing in the half NA a quantity ƒ of redundant fluid , and in the half AS let there be a deficiency g of fluid ; that is , let there be a quantity of matter unsaturated ...
... conductors . 15. Let us now suppose a body N S ( fig . 2. ) , containing in the half NA a quantity ƒ of redundant fluid , and in the half AS let there be a deficiency g of fluid ; that is , let there be a quantity of matter unsaturated ...
Síða 12
... conductor , and in a lesser degree , in all imperfect conductors . 18. It is necessary , in this place , to consider a little the na- ture of that resistance which must be assigned to the motion of the electric fluid through the pores ...
... conductor , and in a lesser degree , in all imperfect conductors . 18. It is necessary , in this place , to consider a little the na- ture of that resistance which must be assigned to the motion of the electric fluid through the pores ...
Síða 32
... these atmospheres , as distinct from the fluid moveable in the conducting bodies , or any perception how the unequal density of these atmospheres protrudes the fluid along the conductor . Besides , it is well known 32 ELECTRICITY .
... these atmospheres , as distinct from the fluid moveable in the conducting bodies , or any perception how the unequal density of these atmospheres protrudes the fluid along the conductor . Besides , it is well known 32 ELECTRICITY .
Síða 33
John Robison Sir David Brewster, David Brewster. along the conductor . Besides , it is well known that a con- ducting ... conductors , to any thickness in this case there can be no atmospheres to operate on the included fluid . To this we ...
John Robison Sir David Brewster, David Brewster. along the conductor . Besides , it is well known that a con- ducting ... conductors , to any thickness in this case there can be no atmospheres to operate on the included fluid . To this we ...
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Common terms and phrases
action angle arch axis balance ball beats body canal centre coating conductor constipated cord curve cylinder Daniel Bernoulli degree density diameter diminished dipping needle direction distance effect elec electric fluid electrified electrometer electrophorus equal experiments explain farther force give glass globe greater harmony harpsichord headsails impulse inches increase length limma loadstone magnet major third manner mean tones motion moveable musical natural natural density nearly needle north pole observed octave overcharged pallet particle pendulum perfect perpendicular phenomena piece of iron pipe plate polarity position precisely produced proportion pulses quantity ratio reader redundant fluid redundant matter repel round sails scapement sensible shew ship side sound south pole stratum string suppose surface temperament tetrachords theory tion tooth touch tricity trumpet tune undercharged undulations velocity vibrations wheel whole wind wire
Vinsælir kaflar
Síða 353 - COMPASS, or the declination of the magnetic or mariner's needle from the meridian or true north and south line at the undermentioned places in the United Kingdom, estimated for the year 1875.
Síða 209 - Elsewhere, Prof. Robison remarks : " It is not saying too much of this work to affirm that it contains almost everything we know of magnetism. His unwearied diligence in searching every writing on the subject and in getting information from navigators, and his incessant occupation in experiments, have left very few facts unknown to him. We meet with many things in the writings of posterior inquirers, some of them of high reputation and of the present day, which are published and received as notable...
Síða 545 - PC, the tooth B continues to press on the pallet D, and thus accelerates the pendulum, both during its descent along the arch PH, and its ascent along the arch HG. It is no less evident, that when the pallet D, by turning round the axis XY, raises its point above the plane of the wheel, the tooth B escapes from it, and i drops on the pallet c, which is now nearly perpendicular. i presses c; to the right, and accelerates the motion of the pendulum along the arch GP.
Síða 411 - We are sorry to see this ; because we have great expectations from the future labours of this gentjeman in the field of harmonics, and his late work is rich in refined and valuable matter. We presume humbly to recommend to him attention to his own admonitions to a very young and ingenious gentleman, who, he thinks, proceeded too far in animadverting on the writings of Newton, Barrow, and other eminent mathematicians.
Síða 609 - Yet a ship is a machine. We know the forces which act on it, and we know the results of its construction — all these are as fixed as the laws of motion. What hinders this to be reduced to a set of practical maxims, as well founded and as logically deduced as the working of a steam-engine or a cotton-mill?
Síða 676 - ... all shivering: For these sails, continuing to draw with considerable force, and balancing each other tolerably fore and aft, keep up the ship's velocity very much, and thus maintain the power of the rudder. If we now let all fly when the...
Síða 613 - ... is precisely such as is stated in the theory. The principles of the art are therefore to be found in these treatises ; but false inferences have been drawn, by computing from erroneous quantities.
Síða 657 - When this position is attained, note carefully the form of the rope, that is, the angle which its two parts make with the horizon. Call this angle a. Every...
Síða 656 - We shall not be far mistaken in the deflection of each contiguous filament, as it quits the bottom and glides along the rudder ; but we neither know the velocity of these filaments, nor the deflection and velocity of the filaments gliding without them.
Síða 665 - ... forward by removing a part of the bows out of the water. It has not always this effect ; for the form of the harping aloft is frequently such that the tendency to gripe is diminished by immersing more of the bow in the •water.