Philosophical MagazineTaylor & Francis, 1869 |
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Page 28
... particles at the dis- tancer from the axis is for the unit of mass . 22 At this distance , however , there is an infinitely narrow zone of the breadth dr , and the thickness of the disk 8 , which contains the mass 2πεδΔαν , if A denotes ...
... particles at the dis- tancer from the axis is for the unit of mass . 22 At this distance , however , there is an infinitely narrow zone of the breadth dr , and the thickness of the disk 8 , which contains the mass 2πεδΔαν , if A denotes ...
Page 83
... particles of bodies certain powers , virtues or forces by which they act at a distance not only upon the rays of light for reflecting , refracting , and inflecting them , but also upon one another for producing a great part of the ...
... particles of bodies certain powers , virtues or forces by which they act at a distance not only upon the rays of light for reflecting , refracting , and inflecting them , but also upon one another for producing a great part of the ...
Page 84
... particles of matter may cohere by the strong- est attractions and compose bigger particles of weaker virtue ; and many of these may cohere and form bigger particles whose virtue is still weaker ; and so on for divers successions , until ...
... particles of matter may cohere by the strong- est attractions and compose bigger particles of weaker virtue ; and many of these may cohere and form bigger particles whose virtue is still weaker ; and so on for divers successions , until ...
Page 85
... particles by some other attractive and repelling power which intercedes the particles . " There are in nature agents capable of uniting the particles of bodies , and it is the province of experimental philosophy to discover these agents ...
... particles by some other attractive and repelling power which intercedes the particles . " There are in nature agents capable of uniting the particles of bodies , and it is the province of experimental philosophy to discover these agents ...
Page 88
... particles become charged with contrary electricities , and that at the moment of combination these electricities suddenly reunite . The compound formed , the light or the heat developed at the moment of combination are readily explained ...
... particles become charged with contrary electricities , and that at the moment of combination these electricities suddenly reunite . The compound formed , the light or the heat developed at the moment of combination are readily explained ...
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Popular passages
Page 77 - small particles of bodies certain powers, virtues, or forces, by which they act at a " distance, not only upon the rays of light for reflecting, refracting, and inflecting them, " but also upon one another, for producing a great part of the phenomena of nature?
Page 79 - All these things being considered, it seems probable to me that God, in the beginning, formed matter in solid, massy, hard, impenetrable, moveable particles, of such sizes and figures, and with such other properties, and in such proportions to space, as most conduced to the end for which He formed them...
Page 80 - ... to derive two or three general principles of motion from phenomena, and afterwards to tell us how the properties and actions of all corporeal things follow from those manifest principles, would be a very great step in philosophy, though the causes of those principles were not yet discovered: and therefore I scruple not to propose the principles of motion above mentioned, they being of very general extent, and leave their causes to be found out.
Page 206 - D'Alembert, was the Precession of the equinoxes and the Nutation of the earth's axis, according to the theory of gravitation.
Page 141 - I am purposing them, to be considered of and examined, an account of a philosophical discovery which induced me to the making of the said telescope ; and I doubt not but will prove much more grateful than the communication of that instrument ; being in my judgment the oddest, if not the most considerable detection which hath hitherto been made in the operations of nature.
Page 78 - In explaining the structure of solid bodies, he is of opinion, " that the smallest particles of matter may cohere by the strongest attractions, and compose bigger particles of weaker virtue ; and many of these may cohere and compose bigger particles whose virtue is still weaker ; and so on for divers successions, until the progression end in the biggest particles, on which the operations in chemistry, and the colours of natural bodies, depend, and which, by adhering, compose bodies of a sensible...
Page 77 - How these Attractions may be performed, I do not here consider. What I call attraction may be performed by impulse, or by some other means unknown to me. I use that Word here to signify only in general any Force by which Bodies tend towards one another, whatsoever be the Cause.
Page 80 - It seems to me farther, that these Particles have not only a Vis inertiae, accompanied with such passive Laws of Motion as naturally result from that Force, but also that they are moved by certain active Principles, such as is that of Gravity, and that which causes Fermentation, and the Cohesion of Bodies.
Page 449 - Herschel described the head of the Comet of 1811 to be of a greenish or bluish-green colour, while the central point appeared to be of a pale ruddy tint. The representations of Halley's comet at its appearance in 1835, by the elder Struve, are coloured bluish green, and the nucleus on October 9 is coloured reddish-yellow.
Page 77 - What I call Attraction may be perform'd by impulse, or by some other means unknown to me. I use that Word here to signify only in general any Force by which Bodies tend towards one another, whatsoever be the Cause. For we must learn from the Phenomena of Nature what Bodies attract one another, and what are the Laws and Properties of the Attraction, before we enquire the Cause by which the Attraction is perform'd.