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The rime collected on the thermometers, the glass bowl of the sunshine recorder, and the bearings of the anemometer, necessitating the frequent use of a brush to remove it, and sometimes effectively preventing the instruments from recording at all. One of our worst blizzards occurred on August 1, 1915, which was, for the ship, the beginning of the end.
At 50 miles per hour, the correct figure is 73 1/3 feet, which show that the figures under this rule are within about one per cent. of being correct. With the table before you it will be an easy matter, by observing the air pressure indicator, to determine the proper speed for the anemometer. Suppose it shows a pressure of two pounds, which will indicate a speed of twenty miles an hour.
Some years ago a professor in one of the Scottish Universities set up a windmill which was simply an amplified anemometer, and connected it with several of Faure's storage batteries for the purpose of furnishing the electric light to his residence. His report regarding his experience with this arrangement showed that the results of the system were quite satisfactory.
The two great merits of this anemometer are its simplicity and the absence of a wind vane; on the other hand it is not well adapted to leaving a record on paper of the actual velocity at any definite instant, and hence it leaves a short but violent gust unrecorded. Unfortunately, when Dr.
Here he pointed to a bronze figure wearing a wreath of laurel and inscribed GULIEMUS HOGWORTH, LITT. DOC. "He had made a great fortune in the produce business and wishing to mark his gratitude to the community he erected the anemometer, the wind-measure, on the roof of the building, attaching to it no other condition than that his name should be printed in the weekly reports immediately beside the velocity of the wind.
The following are the instruments described: Features The electrically recording anemometer Cam device with contact on wheel; slowing arrangement, inertia of wheel. The Dynes anemometer Parabola on immersed float. The recording wind vane Metallic pen. The magnetometer Horizontal force measured in two directions vertical force in one timing arrangement.
To Midwinter Day Thursday, June 1. The wind blew hard all night, gusts arising to 72 m.p.h.; the anemometer choked five times temperature +9°. It is still blowing this morning. Incidentally we have found that these heavy winds react very conveniently on our ventilating system.
Penaud estimated from 20 to 30 horse-power sufficient to drive this machine, weighing with pilot and passenger 2,600 lbs., through the air at a speed of 60 miles an hour, with the wings set at an angle of incidence of two degrees. So complete was the design that it even included instruments, consisting of an aneroid, pressure indicator, an anemometer, a compass, and a level.
She hardly moved a foot in either direction, and yet the wind, as evidenced by the anemometer was howling along at a hundred and twenty miles an hour! "Success!" cried Tom. "Success! Now we can lie stationary in any spot, and spy out the land through our telescope. Now we will find the lost platinum mine!"
The vane of our anemometer is somewhat sheltered: Simpson finds the hill readings 20 per cent. higher. Hence in such gusts as this the free wind must reach nearly 100 m.p.h. a hurricane force. To-day Nelson found that his sounding sledge had been turned over. We passed a quiet Sunday with the usual Service to break the week-day routine.
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