. Inductive elementary physical science with inexpensive apparatus, and without laboratory equipment . 6. Place a small tube in the mercury in thesmall bottle. Also use the tube with mercury as adropper. Inferences. 1. Illustrate with drawings. 2. Comparethe two forces in this case with the same in case of waterand glass. Exp. 57. Fill the equal-arm U-tube with water; withthe finger cover one end, invert, and, holding it perpen-dicularly, remove the finger. Inferences. 1. Infer why the Avater does not fall Name all the forces you can that are operating in this AIB MXFEBIMENTS. 41 experi
. Inductive elementary physical science with inexpensive apparatus, and without laboratory equipment . 6. Place a small tube in the mercury in thesmall bottle. Also use the tube with mercury as adropper. Inferences. 1. Illustrate with drawings. 2. Comparethe two forces in this case with the same in case of waterand glass. Exp. 57. Fill the equal-arm U-tube with water; withthe finger cover one end, invert, and, holding it perpen-dicularly, remove the finger. Inferences. 1. Infer why the Avater does not fall Name all the forces you can that are operating in this AIB MXFEBIMENTS. 41 experiment. 3. Do they all assist in holding water in thetube, or not ? Repeat the experiment, using U-tube withunequal arms. Kepeat again with first U-tube, inclining ittill the water runs out. Exp. 58. Fill the U-tube with water, and, placing afinger over one end, invert and hang it over the edge ofthe Apparatus or dish full of water, and remove thefinger. Raise it until the water runs out in drops, andfinally not at .all. Experiment till you see how to makeit run either slowly or rapidly at
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