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Updated: June 27, 2025
This phonographic machine was the size and shape of a Dutch clock, and down the front of it were electric barometric indicators, and an electric clock and calendar, and automatic engagement reminders, and where the clock would have been was the mouth of a trumpet.
The particular source of error in the case of this mountain lies in the circumstance that its summit is flat, and there is no culminating point upon which the cross-hairs of the surveying instrument may intersect. The barometric determination of heights is, of course, not without similar troubles of its own.
"Do the other animals possess the same barometric accomplishments?" asked the Stranger skeptically, and the Proprietor laughed as he invited him to come inside and judge for himself.
The barometric tide amounted to 0.091 between 9.50 a.m. and 4 p.m., which is less than at the level of the plains of India, and more than at any greater elevation than Tumloong.
The numerical results which I have just marked and which are founded on the laws of distribution of heat, have still the same importance which they possessed at the time of my travels in America; for there does not exist in the immense extent of the Andes, from 8 degrees south latitude to the Straits of Magellan, one Nevada of which the height above the sea-level has been determined, either by a simple geometric measure, or by the combined means of barometric and geodesic measurements.
Doing it at an easy gradient and accustoming oneself to the lessened barometric pressure by slow degrees, there are no such dreadful symptoms. At the same great height I found that even without my oxygen inhaler I could breathe without undue distress. It was bitterly cold, however, and my thermometer was at zero Fahrenheit.
The invention of measures of heat and of atmospheric moisture, pressure, and precipitation, is extremely recent. Hence, ancient physicists have left us no thermometric or barometric records, no tables of the fall, evaporation, and flow of waters, and even no accurate maps of coast lines and the course of rivers.
We found this region, with regard to that from which we had come, to be clearly a hollow, the lowest point being Lake Kumadau; the point of the ebullition of water, as shown by one of Newman's barometric thermometers, was only between 207-1/2 Deg. and 206 Deg., giving an elevation of not much more than two thousand feet above the level of the sea.
His thermometer was based on the afterwards familiar principle of the expansion of a liquid under the influence of heat; but as a practical means of measuring temperature it was a very crude affair, because the tube that contained the measuring liquid was exposed to the air, hence barometric changes of pressure vitiated the experiment.
There was no change in the feel of things inside the ship, of course. Sealed against the vacuum of space, barometric pressure outside made no difference. Height had no effect on the air inside the ship. At 25,000 feet the Chief said suddenly: "We're pointed due east, Joe. Freeze it?" "Right," said Joe. "Freeze it." The Chief threw a lever. The gyros were running at full operating speed.
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