Recreations in Mathematics and Natural Philosophy ...Longman, Hurst, Rees, Orme, and Brown, 1814 |
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Expressions et termes fréquents
ABCD angle animalcules animals aperture apparent magnitude appear axis ball blue body bottom camera obscura catoptrics centre of gravity circle colours concave mirror consequently constructed convex convex lens curious cylinder direction ditto divided effect employed enharmonic equal exhibited experiment eye-glass feet figure focal distance focus globule greater hole horizontal inches in diameter inclined plane instrument invention kind last place latter length lens less light machine magnified manner means method microscope motion moveable moving necessary Niceron object glass obolus observed octave optical painted parallel pass perpendicular person phenomenon piece piston plane mirror plate pounds principle PROBLEM produced radius raised ratio rays reflected reflecting telescopes refraction regard retina seen semitone side sound specific gravity spherical square steam string suppose surface telescope third tion tone Troy weight tube velocity vertical vessel vibrations weight yellow
Fréquemment cités
Page 105 - and most forcible way to drive up water by fire. Not " by drawing or sucking it upwards, for that must be, as " the Philosopher calleth it, Intra Sphaeram Activitatis, " which is but at such a distance ; but this way hath no
Page 105 - which is but at such a distance ; but this way hath no " bounds, if the vessel be strong enough ; for I have taken " a piece of a whole cannon, whereof the end was burst, " and filled it three quarters full of water, stopping and " securing up the broken end, as also the
Page 105 - high; one vessel of water rarefied by fire driveth " up 40 of cold water. And a man that tends the work " is but to turn two cocks, that one vessel of water being " consumed, another begins to force and refill with cold " water, and so successively, the fire being tended and " kept constant, which the self same person may likewise " abundantly perform in the interim
Page 95 - After waiting some time, she again curtsied, and re-entered the carriage ; the page then resumed his place, the coachman whipped his horses, which began to move, and the footman, running after the carriage, jumped up behind it. -It is much to be regretted that M. Camus, instead of confining himself to a general
Page 143 - This principle of optics, as well as the following, may be proved by experiment. 2d. Light, when it meets with a polished plane, is reflected, making the angle of reflection equal to the angle of incidence ; and the reflection always takes place in a plane perpendicular to the reflecting
Page 353 - but fortunately for Stradella they had an ear sensible to harmony. These assassins, while waiting for a favourable opportunity to execute their purpose, entered the church of St. John de Latran, during the performance of an Oratorio composed by the person whom they intended to destroy, and were so affected by the music, that they
Page 37 - In that sea, opposite to the mouth of the river Y, about six miles from the city of Amsterdam, there are two sand banks, between which is a passage, called the Pampus, sufficiently deep for small vessels, but not for those which are large and heavily laden. On this account ships which are outward
Page 306 - an oscillatory motion, which occasions the sound, and which extends to a greater or less distance according to the intensity of the cause that gave rise to it. To form a proper idea of this phenomenon, let us conceive a series of springs,
Page 87 - the point of suspension to the bottom or rather centre of the lamp. If the distance from the bottom of the lamp to the pavement be then measured, which may be done by means of a stick, and added to the former result, the sum will give the height of the arch above the pavement.
Page 273 - distant than the bottle, and this will be seen inverted in the air, and the water, which is really in the lower part of the bottle, will appear to be in the upper. See fig. 52, 53, pi.