. A new thermo-electric fluid-meter and hot-wire anemometer. ty that could be given the anemometer by handpower. With the small steam engine a velocity atthe end of the arm of nearly 60 miles per hour couldbe maintained. 110 The arrangement of the apparatus isshown in figure A • The anemometer beingcalibrated was one of the small type used onkites. Two other anemometers may be seen in thepicture. These represent two methods that wereemployed to measure the natural wind movement dur-ing a calibration run* In the earlier tests thiswind movement was deduced from the record made byan anemometer su
. A new thermo-electric fluid-meter and hot-wire anemometer. ty that could be given the anemometer by handpower. With the small steam engine a velocity atthe end of the arm of nearly 60 miles per hour couldbe maintained. 110 The arrangement of the apparatus isshown in figure A • The anemometer beingcalibrated was one of the small type used onkites. Two other anemometers may be seen in thepicture. These represent two methods that wereemployed to measure the natural wind movement dur-ing a calibration run* In the earlier tests thiswind movement was deduced from the record made byan anemometer surmounting the central axis of thewhirler. since, in this case, the whole anemometerrevolves with the fixed central axis of the whirlerit becomes evident that when the anemometer cupsand whirler revolve in the same direction the speedof the wind must be deduced from the sum of theturns or revolutions of the whirler and the recordedrotations of the cups, but frqm the difference ofthese when the directions of rotation are opposed toeach other. Ill FIGURE Whirling Arm Used in Marvins Anemometer Tests, ^?^•^:.?.? :i;4:)t:>t:*5(c*>i;4: *¥+* + *>(:** + Ilia FIGUIta B.
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Keywords: ., bookcentury1900, bookdecade1920, bookidnewthermoele, bookyear1920
