History of Natural Philosophy from the Earliest Periods to the Present Time ...Longman, Brown, Green & Longmans and J. Taylor, 1834 - 396 sider |
Inni boken
Resultat 6-10 av 63
Side 39
... particular subject in hand admits ; and having demonstrated that the point to be established is not included in any of them except one , we infer that it must be found in that one . This of course presumes that it must be found in some ...
... particular subject in hand admits ; and having demonstrated that the point to be established is not included in any of them except one , we infer that it must be found in that one . This of course presumes that it must be found in some ...
Side 55
... particular care the inequa- lity in the sun's motion , which had , in a general way , been long before noticed . The most ordinary observations of the solstices and equinoxes sufficed to show that the sun took a longer time in passing ...
... particular care the inequa- lity in the sun's motion , which had , in a general way , been long before noticed . The most ordinary observations of the solstices and equinoxes sufficed to show that the sun took a longer time in passing ...
Side 57
... particular epoch . It is the comparison of an ancient catalogue with one made from observations of the pre- sent day , which gives the value to both sets of observ- ations . It is by this comparison that we learn whether , in the course ...
... particular epoch . It is the comparison of an ancient catalogue with one made from observations of the pre- sent day , which gives the value to both sets of observ- ations . It is by this comparison that we learn whether , in the course ...
Side 67
... particular , when speaking of the properties of reflectors , he has mentioned one relating to concave mirrors , which , for a long time , completely baffled the skill of the most scientific commentators to interpret , until it received ...
... particular , when speaking of the properties of reflectors , he has mentioned one relating to concave mirrors , which , for a long time , completely baffled the skill of the most scientific commentators to interpret , until it received ...
Side 71
... particular , has a strong and explicit passage to this effect . 29 However this may be , the various inequalities which were successively observed in the planetary motions gave rise to new applications of the same principle . An ...
... particular , has a strong and explicit passage to this effect . 29 However this may be , the various inequalities which were successively observed in the planetary motions gave rise to new applications of the same principle . An ...
Andre utgaver - Vis alle
History of natural philosophy, from the earliest periods to the present time Baden Powell Uten tilgangsbegrensning - 1842 |
History of Natural Philosophy from the Earliest Periods to the Present Time ... Baden Powell Uten tilgangsbegrensning - 1837 |
Vanlige uttrykk og setninger
actual adopted afterwards algebra Alhazen ancient angle appears application Archimedes Aristotelian Aristotle astronomical attempt Bacon bodies calculation called Cartes causes centre century circle colours conic sections connected considerable construction Copernican system Copernicus cultivation curve deduced degree directed discoveries distance doctrine earth enquiry equations Euclid evinced experiments extended fact fluxions force Galileo genius geometers geometrical gravitation Hipparchus Huyghens idea important improvements inductive philosophy invention investigation Kepler knowledge known labours Leibnitz length light limits mathematical mathematicians means measure mechanical ments method method of exhaustions mind moon motion nature Newton object observations Optics orbit original parabola parallax perhaps period phenomena philosophical physical planetary planets principle problems Ptolemy published quadrature quantity ratio rays referred refraction Regiomontanus remarkable researches solar speculations stars success supposed tangent telescope theory thing tion traced treatise truth Tycho Tycho Brahe Wallis whole
Populære avsnitt
Side 183 - This therefore being granted, methinks that in the discussion of natural problems we ought not to begin at the authority of texts of Scripture, but at sensible experiments and necessary demonstrations...
Side 164 - He scarce had ceased, when the superior fiend Was moving toward the shore: his ponderous shield, Ethereal temper, massy, large, and round, Behind him cast; the broad circumference Hung on his shoulders like the moon, whose orb Through optic glass the Tuscan artist views, At evening, from the top of Fesole, Or in Valdarno, to descry new lands, Rivers, or mountains, in her spotty globe.
Side 153 - I will indulge in my sacred fury ; I will triumph over mankind by the honest confession, that I have stolen the golden vases of the Egyptians*, to build up a tabernacle for my God far away from the confines of Egypt. If you forgive me, I rejoice; if you are angry, I can bear it: the die is cast, the book is written ; to be read either now or by posterity, I care not which : it may well wait a century for a reader, as God has waited six thousand years for an observer.
Side 327 - Newton came from chapel, and had seen what was done, every one thought he would have run mad, he was so troubled thereat that he was not himself for a month after.
Side 333 - I know not what the world will think of my labours, but to myself it seems that I have been but as a child playing on the sea-shore; now finding some pebble rather more polished, and now some shell rather more agreeably variegated than another, while the immense ocean of truth extended itself unexplored before me.
Side 262 - I was so persecuted with discussions arising from the publication of my theory of light, that I blamed my own imprudence for parting with so substantial a blessing as my quiet, to run after a shadow.
Side 226 - Torricelli, who> though younger than Galileo, was for some time his contemporary. He proved that water issues from a hole in the side or bottom of a vessel, with the velocity which a body would acquire, by falling from the level of the surface to the level of the orifice.
Side 49 - The two problems of the duplication of the cube and the trisection of an angle...
Side 177 - One forms however," says Playfair, " a very imperfect idea of this philosopher from considering the discoveries and inventions, numerous and splendid as they are, of which he was the undisputed author. It is by following his reasonings, and by pursuing the train of his thoughts, in his own elegant, though somewhat diffuse exposition of them, that we become acquainted with the fertility of his genius, with the sagacity, penetration, and comprehensiveness of his mind. The service which he rendered...
Side 145 - ... home and plough his fields: and as often as he lifts up to this goodly heaven those eyes with which alone he is able to see, let him pour out his heart in praises and thanksgiving to God the Creator ; and let him not fear but he is offering a worship not less acceptable than his to whom God has granted to see yet more clearly with the eyes of his mind, and who both can and will praise his God for what he has so discovered.