Lynde, Carleton John, b. 1872, Gilbert, A. C. (Alfred Carlton), 1884-1961, A.C. Gilbert Company · New Haven, CT : A.C. Gilbert Co. · leaf 11
ced by the balloon, theballoon sinks; when they are less, it rises.Experiment 10. Fun with thin tubes. Hold a piece of No. 2 tubing in the lamp flame and turn itconstantly. When it is red hot and soft, take it out of theflame and pull your hands apart until the tube is stretched tenor twelve inches… … FIG. 16DRAWING A THIN TUBE 10 BOY ENGINEERING blow into the other end to make air bubbles in the water(Fig. 18). If you can do so, it is a real tube.Does the thin tube bend easily and does it spring back when released? Repeat the experiment with an-other piece of No. 2 tubing, but makethe thin tube…
Glass blowing and working
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