The Principles of Hydrostatics: Designed for the Use of Students in the UniversityJ. Smith, 1820 - 151 páginas |
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Página 57
... intervals of time be taken from the end of the motion , the spaces described in these intervals are as 1 , 3 , 5 , 7 , & c . ( Mech . Art . 247 ) . Also , the time of emptying any A other depth ✯ from the bottom is √2k S X ; conse- α ...
... intervals of time be taken from the end of the motion , the spaces described in these intervals are as 1 , 3 , 5 , 7 , & c . ( Mech . Art . 247 ) . Also , the time of emptying any A other depth ✯ from the bottom is √2k S X ; conse- α ...
Página 123
... the fluid put 212 * . * This is not true for all states of the air , as under different pres- sures of the air , water will boil at different degrees of heat . Divide this interval into 180 equal parts , and also THE THERMOMETER . 123.
... the fluid put 212 * . * This is not true for all states of the air , as under different pres- sures of the air , water will boil at different degrees of heat . Divide this interval into 180 equal parts , and also THE THERMOMETER . 123.
Página 124
... interval may be sub- divided , and the graduation continued both ways . ( 161. ) Hence , a thermometer may be graduated for any other scale . In SIR I. NEWTON's scale , freezing water is O , and boiling water 34 ; and the other points ...
... interval may be sub- divided , and the graduation continued both ways . ( 161. ) Hence , a thermometer may be graduated for any other scale . In SIR I. NEWTON's scale , freezing water is O , and boiling water 34 ; and the other points ...
Página 130
... intervals of time , the expansions were in geometric progression . By this , he was enabled to get the measure of the bar before it was applied to the instrument . This will be best understood by ex- plaining an experiment . The time ...
... intervals of time , the expansions were in geometric progression . By this , he was enabled to get the measure of the bar before it was applied to the instrument . This will be best understood by ex- plaining an experiment . The time ...
Página 131
... intervals between taking the succeeding measures were a mi- nute also . The first measure was 208 ; the second 214,5 ; the third 216,5 ; the fourth 217,5 . The differences of these are 6 , 5 ; 2 ; 1. Now these three numbers are nearly ...
... intervals between taking the succeeding measures were a mi- nute also . The first measure was 208 ; the second 214,5 ; the third 216,5 ; the fourth 217,5 . The differences of these are 6 , 5 ; 2 ; 1. Now these three numbers are nearly ...
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Términos y frases comunes
altitude angle aphelion apogee apparent place appears Astronomers atmosphere axis barometer body called Cassini circle comet computed conjunction consequently declination density describe determined diameter difference distance diurnal motion earth eclipse equal equator excentricity fixed stars Flamstead fluid force gives greater greatest heat hence Herschel horary motion horizon horizontal parallax hour hour angle immersed inches increase inferior conjunction interval Jupiter latitude longitude lunar eclipse magnitude mean motion mercury meridian meridian altitude moon moon's move nearly node observed opposition orbit orifice parallax parallel particles passes perihelion perpendicular phænomena planet pole pressure PROP proper motion quantity refraction resistance revolution revolve right ascension ring rise satellite Saturn semidiameter shadow side sine solar specific gravity spots sun's supposed surface telescope tion Trig true anomaly true longitude true place tube tude umbra varies velocity Venus vessel weight wind zenith
Pasajes populares
Página 284 - Observer' at a salary of 100£ per annum, his duty being 'forthwith to apply himself with the most exact care and diligence to the rectifying the tables of the motions of the heavens and the places of the fixed stars, so as to find out the so much desired longitude of places for the perfecting the art of navigation.
Página 233 - ... and therefore there is a greater probability of seeing a lunar than a solar eclipse. Since the moon is as long above the horizon as below, every spectator may expect to see half the number of lunar eclipses which happen.
Página 267 - ... in diameter. The star is perfectly in the centre, and the atmosphere is so diluted, faint, and equal throughout, that there can be no surmise of its consisting of stars ; nor can there be a doubt of the evident connection between the atmosphere and the star. Another star not much less in brightness, and in the same field with the above, was perfectly free from any such appearance.
Página 208 - If the plane of the moon's orbit coincided with the plane of the ecliptic, there would be an eclipse at every...
Página 150 - ... it had a degree of brightness about as strong as that with which such a coal would be seen to glow in faint daylight.
Página 261 - ... sixteenth century Kepler discovered a new star near the heel of the right foot of Serpentarius, ' so bright and sparkling that it exceeded any thing he had ever seen before.
Página 208 - An eclipse is a partial, or total privation of the light of the sun or moon. An eclipse of the sun is caused by the interposition of the moon between the earth and the sun, and consequently must happen when the inoon is in conjunction with the sun, or at the new moon.
Página 230 - ... the sun was just coming out, a long and very narrow streak of a dusky but strong red light seemed to colour the dark edge of the moon...
Página 227 - ... seconds of time ; then part of the Sun's disc appeared all of a sudden, as bright as Venus was ever seen in the night ; nay, brighter ; and in that very instant gave a light and shadow to things as strong as the Moon uses to dod.
Página 218 - ... red color. An eclipse of the moon arising from a real deprivation of light, must appear to begin at the same instant of time to every place on that hemisphere of the Earth, which is next the moon. Hence, it affords a ready method of finding the longitudes of places upon the Earth's surface.