Exploring the upper air. Left: Beginning of a pilot balloon flight. Right: Sending up a sounding balloon. Note the parachute which wafts the basket of instruments gently to the ground after the balloon bursts. In: “Meteorology” by Charles F. Talman, 1922. Library Call Number M T151m.
Photo Date: Circa 1920
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| Added On | 19th October 2015 |
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