Lynde, Carleton John, b. 1872, Gilbert, A. C. (Alfred Carlton), 1884-1961, A.C. Gilbert Company · New Haven, CT : A.C. Gilbert Co. · leaf 12
FIG. 18AIR THROUGH TUBE runs downhill,but you will nowsee it run uphilland remain therein a most magicalmanner. Cut off 5-inchlengths of No. 6,No. 4, and No. 2tubing, standthem side by sidein a glass full ofwater (Fig. 19),and move themup and down in the water to wet the inside of the tubes. … CSD FIG. 19WATEI RUNS UPHILL GLASS BLOWING 11 Now look at the water level in each of the tubes. Is it abovethe level of the water in the glass, and is it higher the smallerthe inside diameter of the tube, that is, is it higher in the No. 2than in No. 4, and in No. 4 than in No. 6? Now take the thin…
Glass blowing and working
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