The Scientific Proceedings of the Royal Dublin Society, Zväzok 8

Predný obal
The Society, 1898
 

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Strana 492 - ... with astonishing velocity along the valley to the southward, forcing before it not only the clamps of turf on the edge of the bog, but even patches of the moory meadows, to the depth of several feet, the...
Strana 488 - Land on the further side adjoining to it ; and a Rising, or little Hill in the middle of the Bog hereupon sunk flat "This Motion began about Seven...
Strana 492 - I shall now describe the present appearance and state of the bog and moory valley. " In the centre of the bog, for the space of about a mile and a half in length, and a quarter of a mile in breadth, a valley has been formed, sloping at the bottom from the original surface of the bog, to the depth of 30 feet, where the eruption first took place. In this valley or gulf, there are numberless concentric cuts, or fissures, filled with water nearly to the top. " The valley between the edge of the bog and...
Strana 354 - ... for a time, to a slight change in the result. Thus in computing the mutual perturbations of the planets, the planets may be treated as though they were spheres, made up of untextured spherical shells each of a uniform density throughout ; and it may be left out of account that they approach to being spheroids, with mountains on their surface, irregularities of a like kind at greater depths, rocks in those mountains, minerals in those rocks, a different molecular texture in each mineral, tidal...
Strana 355 - ... of them produces its effect in actual nature, the difference between the outcome of their joint operation and that computed from the greatly simplified data of the mathematician is too small to make any approach to being perceived by any human agency. Hence, for any purpose which is of use to man, the approximation arrived at by the simpler problem is sufficient, wherever the errors are of such a nature that they are not cumulative. Nevertheless, it should be clearly recognized that it is a mechanism...
Strana 235 - ... he on a bicycle, I on a tricycle — on an unusually dark night in summer from Glendalough to Rathdrum. It was drizzling rain, we had no lamps, and the road was overshadowed by trees on both sides, between which we could just see the sky-line. I was riding slowly and carefully some ten or twenty yards in advance, guiding myself by the sky-line, when my machine chanced to pass over a piece of tin or something else in the road that made a great crash. Presently my companion came up, calling to...
Strana 351 - ... being one of these material substances]. According to this, which is the prevalent hypothesis among both scientific and nonscientific men, it is these substances which travel about through space ; and the sensible objects, which are what we see and feel, are supposed to accompany them in their wanderings by reason of the way in which they, the subtances, act (usually through intermediate material agencies) upon our organs of sense f.

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