Proceedings of the Meteorological Society, Volumen5Taylor & Francis, 1871 |
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Términos y frases comunes
amount appeared arch August aurora average barometer beam became bright changes clouds colour continued correct daily December direction disappeared east elevation evaporation experiments extending extreme fall February feet fell five formed gauge give given GLAISHER greater greatest Greenwich ground heat height highest horizon inches increase intense January July June largest length less light lower lowest magnetic March maximum mean temperature meteor Meteorological miles minutes month moon moving nearly night November observations obtained occurred October passing path period position pressure rain rainfall range recorded red light remained remarkable Royal Observatory seemed seen September Showing Society stars stations streak streamers summer Sums Table taken taking thermometers train Ursa Major values vapour visible whole wind zenith ΟΙ
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Página 293 - ... contact pins comes in contact with the two levers, thus uniting them and completing the circuit. The levers are raised a few degrees and then fall back to their normal position ready to be taken up by the next pin, and so on. The recording apparatus consists of a train of wheels and pinions working in a frame or between two brass plates, the arbors of which project through a dial-plate whereon the circles and figures are engraved and carry the hands. These wheels are driven by a weight attached...
Página 35 - Noon 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM...
Página 81 - Whilst I was attending to this appearance, the whole visible hemisphere of the heavens became covered with a light palish vapour, as I at first imagined it to be. It was disposed in longitudinal streaks, extending from the west, by the zenith, and all along the sky towards the east. On examining this appearance more narrowly, I found it to be a true aurora borealis, with all the characters which distinguish that meteor when seen by night, excepting that it was now entirely pale and colourless. The...
Página 3 - The dew shall weep thy fall to-night, For thou must die. Sweet rose, whose hue, angry and brave, Bids the rash gazer wipe his eye, Thy root is ever in its grave, And thou must die. Sweet spring, full of sweet days and roses, A box where sweets compacted lie, My music shows ye have your closes, And all must die.
Página 308 - Second Series of Experiments. June 21st. — The thermometers were placed in the cylinder, which was filled with water ; the supply-tub or cistern for pumping in from, and a tub of water standing near the press, were also filled and thus left all night. June 22nd. — A dull morning, with no sun, all the conditions most favourable for observing. Before commencing, obtained two tubs of water with 12°...
Página 301 - THERMOMETERS* THE objects of this paper and of the experiments and observations recorded therein, are : — 1. The ascertainment of the effect of pressure on thermometers used for deep-sea purposes. 2. To obtain a scale whereby observations made by the thermometers now in use could be corrected for pressure. 3. To obtain a scale whereby observations made previously by other thermometers can be utilised.
Página 181 - ... 1827, to the command of the Britomart, 10. The Britomart was first employed and intended for the Channel service under the order of the Commander-in-Chief, the Earl of Northesk, at Plymouth. She accompanied the squadron of ships escorting Don Miguel to Lisbon in the early part of 1828. In consequence of the revolution that followed in Portugal on Don Miguel declaring himself absolute, the Britomart was stationed at and off Oporto to watch the British interests there. The Constitutional party,...
Página 304 - Hydrographic-Office pattern *. It was also necessary to reduce the number of thermometers, and also of the readings, to a minimum. With the view of testing the efficiency of Dr. Miller's pattern (No. 2) it was placed in the cylinder with No. 57, and subjected to a pressure of 4032 Ibs.
Página 303 - ... made to these thermometers were : — 1. Their fragility, the slightest jar or blow often breaking them. 2. The necessity of their being always kept in a vertical position. 3. The uncertainty of the register, the indices being generally capable of being shaken down. 4. Their large size, in connection with friction in passing through the water. 5. The substance they were mounted on, being generally wood, became so swollen by pressure of the water as often to render them incapable of being withdrawn...
Página 318 - Thus, while one set of thermometers show an increase of effect under pressure, the other set denote a decrease, and the mean of the two would be so small a decrease as not to be appreciable ; and the practical conclusion is, that, by the testing-apparatus, the elasticity of the glass is in exact proportion to the pressure applied.