Readings in natural philosophy; or, A popular display of the wonders of nature, selected [summarised] from the Trans., Roy. soc. of London, by C.C. Clarke |
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Common terms and phrases
animalcula animals appeared body bones bottom breadth bronchia called cause centre coal colour common continued degree diameter distance diurnal motion earth earthquake eggs electrical epidermis equal experiment feet fire fish five fixed fluid force fossil four glass ground half head heat height Henry Jenkins hole horns hour inches insects iron island kind lava legs length less light Lincolnshire Lisbon manner marsupium microscope miles minutes moon motion Mount Vesuvius mountains mouth muscles naphtha nature noise observed papillæ particles perceived piece plant polypus Port-Royal produced pyrites quantity quicksilver river roots sal ammoniac salt sand seed seemed seen shells side silk-worms skin soon sort species spider stars stone stratum substance supposed surface tail teeth thick thing threads trees Upminster velocity vertebræ vessels whence whole wind yards
Popular passages
Page 344 - When the rain has wet the kite and twine, so that it can conduct the electric fire freely, you will find it stream out plentifully from the key on the approach of your knuckle. At this key the phial may be charged ; and from electric fire thus
Page 344 - thunder-gust without tearing. To the top of the upright stick of the cross is to be fixed a very sharp-pointed wire, rising a foot or more above the wood. To the end of the twine, next the hand, is to be tied a silk ribbon; and where the twine and silk join, a key may be fastened.
Page 243 - he before knew from feeling, he would carefully observe, that he might know them again; but having too many objects to learn at once, he forgot many of them; and, as he said, at first he learned to know, and again forgot a thousand things in a day.
Page 344 - spirits may be kindled, and all the other electrical experiments be performed, which are usually done by the help of a rubbed glass globe or tube, and thus the sameness of the electric matter with that of lightning is completely demonstrated.
Page 41 - small hole in it also, for some of that incident light to pass through. Then I placed another prism behind this second board, so that the light, trajected through both the boards. might pass through that also, and be again refracted before it arrived at the wall. This done, I took the first
Page 243 - One particular only, though it may appear trifling, Mr. C. relates: having often forgot which was the cat, and which the dog, he was ashamed to ask; but catching the cat, which he knew by feeling, he was observed to look at her steadfastly, and then setting her down, said, So, puss \ I shall know you another time.
Page 243 - forgot which was the cat, and which the dog, he was ashamed to ask; but catching the cat, which he knew by feeling, he was observed to look at her steadfastly, and then setting her down, said, So, puss \ I shall know you another time.
Page 531 - propriety be called caloric? We have seen that a very considerable quantity of heat may be excited in the friction of two metallic surfaces, and given off in a constant stream or flux, in all directions, without interruption or intermission, and without any signs of diminution or exhaustion.
Page 555 - may be perceived, the rays of light which convey its image to the eye must have been more than 1,910,000 years on their way ; and that consequently so many years ago this object must already have had an existence in the sidereal heavens, in order to send out those rays by which we now perceive it. The
Page 219 - at the end of his Principles, after he had mentioned the properties of gravity, he added, " But the reason of these properties of gravity I could not deduce from phenomena, and I do not devise hypotheses. For whatever is not deduced from phenomena is to be called an hypothesis; and hypotheses, whether metaphysical or physical,