United States or United Kingdom ? Vote for the TOP Country of the Week !
I had to explain the use of each instrument, a difficult matter indeed, considering their ignorance and my limited knowledge of Tibetan, which did not allow of my delivering scientific lectures in their language. The sextant was looked upon with great suspicion, and even more so the hypsometrical apparatus, with its thermometers in brass tubes, which they took to be some sort of firearm.
In a word, Humboldt says the climatic distribution of heat depends on the relative distribution of land and sea, and on the "hypsometrical configuration of the continents"; and he urges that "great meteorological phenomena cannot be comprehended when considered independently of geognostic relations" a truth which, like most other general principles, seems simple enough once it is pointed out.
The water of the hypsometrical apparatus boiled at 185° Fahrenheit, fifty feet above the level of the lake, the temperature of the air being 76° and the hour 10 A.M. We could see a high snowy chain to the south of us, extending approximately from south-west to north-east, starting from the Nimo Namzil peak.
The writer had owned this instrument for the past ten years, but had never opportunity to test its usefulness until now. So, although it read no lower than about fifteen inches, he took it with him to observe its operation. Lastly, completing the hypsometrical equipment, was a boiling-point thermometer, with its own lamp and case, reading to 165° by tenths of a degree.
Although the attempt to bring all these bizarre forms under a rigid scheme of classification has not been wholly successful, their structural peculiarities, the hypsometrical relation between their interior and the surrounding district, their size, and the character of their circumvallation, the dimensions of their cavernous opening as compared with that of the more or less truncated conical mass of matter surrounding it, all afford a basis for grouping them under distinctive titles, that are not only convenient to the selenographer, but which undoubtedly represent, as a rule, actual diversities in their origin and physical character.
When he went to Alaska he carried with him all the hypsometrical instruments that were used in the ascent as well as his personal climbing equipment. There was no definite likelihood that the opportunity would come to him of attempting the ascent, but he wished to be prepared with instruments of adequate scale in case the opportunity should come; and Hicks, of London, made them nine years ago.
MARIA. Leaving, however, these considerations for a more particular description of the Maria, it is clearly impossible, in referring to their level relatively to the higher and brighter land surface of the moon, to appeal to any hypsometrical standard.
With a temperature of 68° Fahrenheit the water in the hypsometrical apparatus boiled at 183° 3-1/2' at 8.30 in the evening. The lake was of extraordinary beauty, with the high snowy Gangri mountains rising almost sheer from its waters. On the southern side lofty hills formed a background wild and picturesque, but barren and desolate beyond words.
"It is well to note that the final hypsometrical computations fully affirm my discovery that in Mount Haystack we have another mountain of five thousand feet altitude. It may not be uninteresting also to remark that the difference between the altitudes of Mount Marcy and Mount Washington of the White Mountains of New Hampshire is found to be quite eight hundred feet.
Each set consisted of the following instruments. A six-inch sextant. The hypsometrical apparatus, a device used for measuring heights by means of boiling-point thermometers, which had been specially constructed for work at great elevations. It is well known that the higher one goes, the lower is the temperature at which water boils.
Word Of The Day