| 摘要 |
The invention solves the problem of a technical toy, which enables children to understand the difference in gas and liquid compressibility, further Archimedes' and Pascal's principle in a creative manner. The gist of the solution form swimming jellyfishes consisting of a solid non-swimming funnel, which is glued by a plug at the bottom and which has an inflated flexible hat in the upper part. The hat is put on the thistle-top funnel and clamped in its circumferential groove by a ring, while the so created swimming jellyfishes are placed in a bottomless transparent liquid vessel, which is fairly filled with a transparent liquid and in a sealed way mounted on the flange, which opens into the carrying bushing, where the working piston, controlled by a flat bolt, moves vertically. The solution can be used in the production of principally new technical toys and teaching aids.<IMAGE>
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