TY - JOUR
AU1 - Abbe, Cleveland
AB -  BY CLEVELAND ABBE, Editor Monthly Weather Review. The experiment described by Dr. C. E. Peet in the April, 1907, issue of this journal implies the use of an air pump, whereas the following method, which has often been used by the editor, not only requires no expensive apparatus, but has several other advantages. A bottle (A), properly corked, has inside of it an ordinary elastic-rubber toy balloon (B), which, when but slightly distended, occupies only two or three cubic inches. A glass’(or preferably a rubber) tube enters the mouth of the balloon, and also passes outward, air-tight, through the cork. On blowing through the tube, or forcing air by any other method into the balloon, the latter is distended, and of course the air within the bottle is compressed. Pinch the rubber tube and wait until this compressed air has lost its warmth, which it quickly does by conduction and radiation to.the sides of the bottle, then remove the tube and allow the compressed air of the bottle to push the air within the balloon outward through the rubber tube. The work done by this expansion cools it enough to produce the most delicate cloud of condensed vapor, 
TI - ESPY'S NEPHELOSCOPE *
JF - School Science and Mathematics
DO - 10.1111/j.1949-8594.1907.tb01081.x
DA - 1907-10-01
UR - https://www.deepdyve.com/lp/wiley/espy-s-nepheloscope-H01n7TkdM2
SP - 586
VL - 7
IS - 7
DP - DeepDyve
ER -