Category: Science - Physics
Description of a cheap and portable Instrument for enabling Young People to acquire a knowledge of the Stars, or determine their situation in the Heavens. By S. LEE, Esq. 371
Description of a cheap and portable Instrument for enabling Young People to acquire a knowledge of the Stars, or determine their situation in the Heavens. By S. LEE, Esq. 371
2. i. Ephemeris of the periodical Comet for its Return in 1828,The drawings, illustrating the construction of a Blow-pipe, are not sufficiently accurate to enable us to publish them. Our Correspondent will observe that we have noticed anoth...
3. Book 5, chap. 2, Page 403—Account of a new compound Microscope forobjects of Natural History—is the following passage: “We cannot therefore expect any essential improvement in the single microscope, unless from the discovery of some transparen...
4. Letter VIII gives us a rule for doubling the last letter of a verb inthe participle if an accent is on the last syllable: but it should be observed that the L is doubled, whether accented or not, as in _caballing_, _travelled_, _levelled_, _cavil...
5. Letter XVII. The criticism on Milton’s “than _whom_ none higher sat,is perfectly correct. _Than_ is never a preposition, and is simply a variation from the older _then_, both in English and in German. _John is better than James_ means simply Joh...
6. Letter XIX gives a definition of the ellipsis, which would be alesson to Apollonius himself: the compasses, it seems, “do not take their sweep all round, but leave out parts of the area or surface.” The objection to Blackstone’s language is...
7. ii. The temperature was indicated by the gas itself, and not by athermometer: iii. Water was easily separated previously from the gases, and excluded from the apparatus: iv. All the gases were placed in exactly the same circumstances, so as t...
8. ii. Other circumstances being the same, the specific heat of gases2. _On the Incandescence and Light of Lime_.—The experiments made by Lieutenant Drummond upon the light of lime and other earths when highly ignited, with the highly interesting...
9. ii. A mirror, which was found to consist of 85 parts of copper, 14of tin, and 1 of iron per cent.; iii. A blue colour found in a tomb: [p210] it was composed of silica 70 parts; lime 9; oxide of copper 15; oxide of iron 1; soda mixed with pota...
10. iii. It is composed of carbonic acid and azote, in very variableproportions. The following experiment was frequently made. The bubbles of air which are disengaged from the skin were received into a funnel, the top of which was closed: they w...
11. iv. It does occur continually; but very often we may vainly attemptto discover it, which has been the cause of error in the results of Priestley, Fontana and Fourcroy. It is especially suspended after exercise long continued in the middle of th...
12. vi. The proportions of the two gases vary very much, and sometimesthe exhaled gas consists almost entirely of azote: in other instances the predominance of carbonic acid is so great that it appears to be the only product.—_Med. Rep._, N. S. v....
13. i. All bodies exert between themselves a feeble repulsive action inordinary circumstances. The repulsion between bismuth and [p456] antimony and the poles of a magnetic needle, is a case of this general law, and is not due to magnetism. Nor is...
14. ii. A very marked attraction may be observed between a cold and a15. iii. The metallic plates in the Cabinet de Physique de Paris,intended for the repetition of M. Arago’s experiments on magnetism by rotation, contain more or less of iron capable of attracting a very mobile magnetic needle. These plates, a...
16. iv. I believe that, in many cases, results obtained without theappreciable developement of magnetism or electricity, have been attributed to these powers; and from well-proved experiments I shall deduce new results relative to the diurnal v...
17. iii. The length of its transverse diameter appeared to be about equal18. v. A tail of light, ten or twelve degrees in length, was formedbehind it; broadest near the body; decreasing in breadth very slowly for about two-fifths of its length, after which it was uniform, and about as wide as the apparent diameter o...
19. vi. The ball was far more luminous than the tail, and the part20. vii. The light was such that all objects cast distinct shadows,viii. Numerous sparks continually issued from the ball of the [p488] meteor; they were of the apparent size, but much more brilliant than the smaller stars, and after descending...
21. x. A second or two before its disappearance, three much largersparks or luminous fragments were thrown off at once, two of them the apparent size of Venus, the third larger. These were the last pieces which were seen to leave the body. The...
22. xi. The meteor itself disappeared as suddenly as if, in oneindivisible moment, it had passed into a medium absolutely opaque, or as if, at a given moment, it had left the atmosphere; but a few moments afterwards there was a distinct and...
23. xiii. Between eight and ten minutes after the disappearance of themeteor, there was a loud and heavy report, accompanied by a very sensible jar; it did not much resemble either thunder or the report of a cannon, but was louder, shorter, and sh...
24. part II. contents, 379Original spelling and grammar has generally been retained, with some exceptions noted below. Illustrations are moved from inside paragraphs to between paragraphs. Footnotes are...