An Introduction to Natural Philosophy: Illustrated with Copper Plates, Volume 1J. Johnson, 1805 |
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Page 10
... small cubes will not be infinite . Ima- gine the quantity of matter to be then divided into a number of parts equal to that of the small cubes , and a particle to be placed in the center of each cube . The whole fpace will thus be ...
... small cubes will not be infinite . Ima- gine the quantity of matter to be then divided into a number of parts equal to that of the small cubes , and a particle to be placed in the center of each cube . The whole fpace will thus be ...
Page 12
... small , that many thousands of them might ftand on the point of a needle . Suppofing the globules of the blood in thefe animalcula to be in the fame proportion to their bulk as the globules of a man's blood bear to his body , it appears ...
... small , that many thousands of them might ftand on the point of a needle . Suppofing the globules of the blood in thefe animalcula to be in the fame proportion to their bulk as the globules of a man's blood bear to his body , it appears ...
Page 13
... small then must thofe particles be ! To these ultimate particles alone it is , that im- w penetrability can be attributed . Penetration takes place in all compounded bodies . Water exifts in the pores of wood . Air in the pores of water ...
... small then must thofe particles be ! To these ultimate particles alone it is , that im- w penetrability can be attributed . Penetration takes place in all compounded bodies . Water exifts in the pores of wood . Air in the pores of water ...
Page 17
... small piece of glass may bear a lefs proportion to its bulk than that bulk does to the whole earth . To render the poffibility of this more evident , н we may suppose a body to be fo conftructed , as to have as much vacuity as matter ...
... small piece of glass may bear a lefs proportion to its bulk than that bulk does to the whole earth . To render the poffibility of this more evident , н we may suppose a body to be fo conftructed , as to have as much vacuity as matter ...
Page 20
... wanting , as in the heavens , it requires no small degree of attention to distinguish the real from the apparent motion . Experience Experience proves , that the three following laws are fufficient 20 MOTION . after A.
... wanting , as in the heavens , it requires no small degree of attention to distinguish the real from the apparent motion . Experience Experience proves , that the three following laws are fufficient 20 MOTION . after A.
Other editions - View all
An Introduction to Natural Philosophy, Vol. 1 of 2: Illustrated With Copper ... William Nicholson No preview available - 2017 |
An Introduction to Natural Philosophy, Vol. 2 of 2: Illustrated With ... William Nicholson No preview available - 2016 |
Common terms and phrases
alfo alſo angle apfides appear axis becauſe bodies cafe caufes cauſe centripetal force circle colours confequently confiderable conjunction courſe deſcribed diameter diminiſhed direction diſtance Earth ecliptic elongation equal faid fame fecond feen fhadow fhewn fhould fide fimilar fince firft firſt fituated fixed ftars fmall fome fquare fuch fufficient fuppofed furface glaſs gravity greater greateſt inclined plane increaſe inferior planet inftant inftruments interfecting inverſely itſelf Jupiter laft laſt lefs leſs likewife mafs maſs meaſure Moon Moon's moſt motion move muft muſt node obferved occafion oppofition orbit paffes paffing parallax parallel paſs perpendicular planet pofition proportion purpoſe quadratures quantity ratio rays of light reaſon reflection refraction refrangible reft repreſent retrograde motion revolution revolve Saturn ſeen ſhall ſmall ſpace ſquare ſtars Sun's ſuppoſed teleſcope thefe theſe thofe thoſe tion uſed velocity Venus weight Whence whofe whoſe
Popular passages
Page 301 - Boyle] as when it is adjacent to it. Secondly, If Light in its paflage out of Glafs into Air be incident more obliquely than at an Angle of 40 or 4 1 Degrees it is wholly reflected, if lefs obliquely it is in great meafure tranfmitted.
Page 287 - ... hot; that the vibrations thus excited are propagated in the refracting or reflecting medium or substance, much after the manner that vibrations are propagated in the air for causing sound, and move faster than the rays so as to overtake them; and that when any ray is in that part of the vibration which conspires with its motion, it easily breaks through a refracting surface, but when it is in the contrary part of the vibration which impedes its motion, it is easily reflected...
Page 276 - Thus (hall there be made two Bows of Colours, an interior and ftronger, by one reflexion in the Drops, and an exterior and fainter by two ; for the Light becomes fainter by every reflexion.
Page 276 - F, and ftrike the fenfes with the intermediate Colours in the order which their degrees of refrangibility require , that is, in the progrefs from...
Page 304 - fmall to be vifible. And therefore, if light were " reflected by impinging on the folid parts of the " glafs, it would be fcattered as much by the moft *' polifhed glafs, as by the rougheft. So then it re...
Page 275 - Eye, and thereby ftrike the fenfes with the deepeft violet Colour in that region. And in like manner the Angle SFO being equal ta the Angle P OF, or 42 deg.
Page 292 - Feathers of fome Birds, and particularly thofe of Peacocks Tails, do, in the very fame part of the Feather, appear of feveral Colours in feveral Pofitions of the Eye, after the very fame manner that thin Plates...
Page 269 - The instance of the separation of the primary colours of light, which seems most remarkable, is that of the RAINBOW. It is formed, in general, by the reflection of the rays of the sun's light from the drops of falling rain, though frequently it appears among the waves of the sea, whose heads, or tops, are blown by the wind into small drops, and it is sometimes seen on the ground, when the sun shines on a very thick dew.
Page 301 - Room be fucceffively caft on a fecond Prifm placed at a greater diftance from the former, in fuch -manner that they are all alike incident upon it, the fecond Prifm may be fo inclined to the incident Rays, that thofe which are of a blue Colour fhall be all reflected by it, and yet thofe of a red Colour pretty copioufly tranfmitted. Now if the...
Page 304 - Ray is effected, not by a single point of the reflecting Body, but by some power of the Body which is evenly diffused all over its Surface, and by which it acts upon the Ray without immediate Contact.