Lectures on Select Subjects in Mechanics, Hydrostatics, Pneumatics, Optics, and AstronomyT. Tegg, 1837 - Всего страниц: 463 |
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Стр. xxvii
... , because the teeth of the wheels were rather too weak to bear the force of a spring sufficient to move the balance ; although the wheels would run fast enough when the balance was taken off . I LIFE OF THE AUTHOR . XX Vii.
... , because the teeth of the wheels were rather too weak to bear the force of a spring sufficient to move the balance ; although the wheels would run fast enough when the balance was taken off . I LIFE OF THE AUTHOR . XX Vii.
Стр. xxxv
... moving in the ecliptic ; the one always overtaking the other at a place forwarder than it did at their last conjunction before . On this , I contrived and finished a scheme on paper for shewing the motions and places of the sun and moon ...
... moving in the ecliptic ; the one always overtaking the other at a place forwarder than it did at their last conjunction before . On this , I contrived and finished a scheme on paper for shewing the motions and places of the sun and moon ...
Стр. xxxvi
... moved backward through the whole ecliptic in 18 years and 224 days , which was at the rate of 3 min . 11 sec . every 24 hours . But , as I scarcely knew , in the year 1730 , what the moon's nodes meant , I took no further notice of it ...
... moved backward through the whole ecliptic in 18 years and 224 days , which was at the rate of 3 min . 11 sec . every 24 hours . But , as I scarcely knew , in the year 1730 , what the moon's nodes meant , I took no further notice of it ...
Стр. 2
... moves , and by which its velocity is retarded every moment till it falls . A bowl moves but a short distance upon a bowling- green ; because the roughness and unevenness of the grassy surface soon creates friction enough to stop it ...
... moves , and by which its velocity is retarded every moment till it falls . A bowl moves but a short distance upon a bowling- green ; because the roughness and unevenness of the grassy surface soon creates friction enough to stop it ...
Стр. 3
... move more than a semidia- meter of the earth , in the time it would take to fall to the earth by gravity ; in that ... moved , if a sufficient degree of force be applied to overcome its inactivity or resistance . The fourth property of ...
... move more than a semidia- meter of the earth , in the time it would take to fall to the earth by gravity ; in that ... moved , if a sufficient degree of force be applied to overcome its inactivity or resistance . The fourth property of ...
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altitude angle axis axle ball body bottom brass brazen meridian bucket bulk catgut center of gravity center of motion centrifugal force circle cock cogs cubic cylinder declination degrees dial diameter distance divided draw drawn earth ecliptic edge engine equal equator equinoctial fall feet fixed fluid glass gnomon half hole horizon hour-lines inches inclined plane latitude LECT length lever machine mean motion moon move north pole object ounces parallel perpendicular height pipe piston plane plate polar circles pole pounds pressure pulley pump quadrant quantity quicksilver raised ratchet-wheel rays receiver right line rise rope scale screw shew side sine specific gravity spring square steam steam engine sun's place suppose surface syphon tion troy troy ounces Troy weight trundle tube valve velocity vessel wedge weight wheel whilst whole winch wire