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active Æther Agent alſo appears Attraction Author Bodies caſe cauſe Circle common conſequently contained continue diſtance ditto Earth effects elaſtic electrical equal Eſq evident exiſtence Experiments fame farther Fire firſt fluid force former give glaſs Gravity greateſt groſs half hand hath Heat inch iron itſelf kind leſs light London Longitude magnetic magnetic Pole manner matter means mechanical Medium Meridian metal method moſt motion move muſt Nature Needle never obſerved opinion particles particular Perſon Philoſophy phyſical pores preſent Principle produced proper properties prove pure quantity Rays Reader reaſon receiver remarkable ſame ſay ſeems ſeveral ſhall ſhould ſince Sir Iſaac Newton ſome ſpace ſubtile ſuch ſufficient ſuppoſe term theſe thing thoſe thought thro tion true truth Tube univerſal uſe Variation whole wire Worceſter World
Seite 139 - This kite is to be raised when a thunder-gust appears to be coming on, and the person who holds the string must stand within a door or window, or under some cover, so that the silk...
Seite 29 - ... all sensation is excited, and the members of animal bodies move at the command of the will, namely, by the vibrations of this spirit, mutually propagated along the solid filaments of the nerves, from the outward organs of sense to the brain, and from the brain into the muscles.
Seite 29 - And now we might add something concerning a certain most subtle Spirit which pervades and lies hid in all gross bodies: by the force and action of which Spirit the particles of bodies mutually attract one another at near distances, and cohere, if contiguous...
Seite 139 - As soon as any of the thunder-clouds come over the kite the pointed wire will draw the electric fire from them, and the kite, with all the twine, will be electrified, and the loose filaments of the twine will stand out every way and be attracted by an approaching finger.
Seite 387 - ... the nature of things depending on them would be changed. Water and earth composed of old worn particles and fragments of particles would not be of the same nature and texture now with water and earth composed of entire particles in the beginning.
Seite 248 - ... which philosophy seems chiefly to be founded on; such as the density and the resistance of bodies, spaces void of all bodies, and the motion of light and sounds. It remains that, from the same principles, I now demonstrate the frame of the System of the World.
Seite 13 - The qualities of bodies, which admit neither intensification nor remission of degrees, and which are found to belong to all bodies within the reach of our experiments, are to be esteemed the universal qualities of all bodies whatsoever.
Seite 139 - To the top of the upright stick of the cross is to be fixed a very sharp-pointed wire, rising a foot or more above the wood. To the end of the twine next the hand is to be tied a silk ribbon, and where the silk and twine join a key may be fastened.
Seite 131 - I wish we could derive the rest of the phenomena of nature by the same kind of reasoning from mechanical principles; for I am induced by many reasons to suspect that they may all depend upon certain forces by which the particles of bodies, by some causes hitherto unknown, are either mutually impelled towards each other, and cohere in regular figures, or are repelled and recede from each other...