Lectures on Natural and Experimental Philosophy: Considered in It's [sic] Present State of Improvement. Describing in a Familiar and Easy Manner, the Principal Phenomena of Nature; and Shewing, that They All Co-operate in Displaying the Goodness, Wisdom, and Power of God, Band 2R. Hindmarsh, 1794 |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
acid alfo alſo angle angle of incidence apparent magnitude appear arifes atmoſphere axis becauſe bodies cafe caufes cauſe colours concave concave lens confequently confiderable confidered confifts converging convex convex lens cornea degree denfity diftinct diftinctly diverging equal experiments eye-glafs falt fame fecond feems feen fenfe fenfible feparated fhall fhew fhould fide fimilar fire firft firſt fituated fize fmall fmaller focus folar folid fome fpeculum ftate ftill fubftances fubject fuch fufficient fuppofe furface glaffes glafs glaſs heat hole inches increaſed itſelf laft lefs lenfes lens mirror moft moſt muſt nature nearer neceffary obferved object object-glafs occafion opake pafs parallel particles perceive philofophy placed pofition prefent prifm quantity rays of light reafon reflected refracted refrangible reft reprefented retina ſmall ſpace teleſcope thefe theſe thofe thoſe tion tranfmitted tranfparent uſed vapour vifible vifion vitreous humour whofe
Beliebte Passagen
Seite 119 - ... in the entrance of philosophy, when the second causes, which are next unto the senses, do offer themselves to the mind of man, if it dwell and stay there, it may induce some oblivion of the highest cause ; but when a man passeth on...
Seite 93 - To a poet nothing can be useless. Whatever is beautiful, and whatever is dreadful, must be familiar to his imagination : he must be conversant with all that is awfully vast or elegantly little. The plants of the garden, the animals of the wood, the minerals of the earth, and meteors of the sky, must all concur to store his mind with inexhaustible variety...
Seite 142 - Teneriffe, or even of St. Peter's Church at Rome, it would be the work of a lifetime. It would appear still more incredible to such beings as we have supposed, if they were informed of the discoveries which may be made by this little organ in things far beyond the reach of any other sense : that...
Seite 327 - ... exceeding frequent, and where the traveller is obliged to cover his eyes with crape, to prevent the dangerous, and often...
Seite 455 - I have here supposed that my reader is acquainted with that great modern discovery, which is at present universally acknowledged by all the inquirers into natural philosophy: namely, that light and colours, as apprehended by the imagination, are only ideas in the mind, and not qualities that have any existence in matter.
Seite 402 - ... vapours, all of which whitened the flowers. I 'reftored the red colour of each of thefe, by applying to them indifcriminately either vegetable, or mineral, acids. It appears, from thefe experiments, that the colouring matter of the flowers is not difcharged or removed, but only diflblved, by the phlogifton ; and thereby divided into particles too minute to exhibit any colour. In this ftate, together with the vegetable, juice in which they are diffufed, they form a colourlefs tranfparent covering,...
Seite 390 - ... fufficiently opake, as falts, or wet paper, or the oculus mundi ftone, by being dried; horn, by being fcraped; glafs, by being reduced to powder, or otherwife flawed; turpentine, by being ftirred about with water till they mix imperfectly; and water, by being formed into many fmall bubbles, either alone in the form of froth, or by fhaking it together with oil of turpentine, or fome other convenient liquor with which it will not perfectly incorporate.
Seite 326 - ... objects to which the degree of light is inadequate ; but too great a quantity has, by its own power, destroyed the sight.
Seite 355 - As the rays of light differ in degrees of refrangibility so they also differ in their disposition to exhibit, this or that particular colour. Colours are not qualifications of light, derived from refractions, or reflections of natural bodies (as 'tis generally believed) but original and connate properties, which in divers rays are divers.
Seite 130 - Even all the fyftems of the ftars that fparkle in the cleareft fky muft pofTefs a fmall corner only of that fpace over which fuch fyftems are difperfed, fince more ftars are difcovered in one conftellation, by the telefcope, than the naked eye perceives in the whole heavens. * After we have rifen fo high, and left all definite meafures fo far behind us, we find ourfelves no nearer to a term or limit ; for all this is nothing to what may be difplayed in the infinite expanfe, beyond the remoteft ftars...