Soap bubbles on a stand. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Soap bubbles on a stand. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Twist a bubble stand out of wire: a ring with three legs. The diameter of the ring is approximately 7 cm. Dip the ring in the soap solution and drop a bubble on it. Now you can remove the tube; the bubble will sit on the stand for a long time without bursting.

Make a second ring of the same diameter with a handle like a racket. Moisten it with soapy water and lower it onto the bubble sitting on the stand. The bubble will stick to the ring. Ready? Now lift the top ring. Higher, higher... The soap ball will stretch into a cylinder. Move the ring to the side - the cylinder will reach for it and bevel. Lower the top ring back to its original position and the cylinder becomes a ball again.

Soap bubbles on a stand

Do you think it's good to make a stand with smooth wire covered with shiny enamel insulation? No, it's not. It is better to take wire wrapped in silk or cotton yarn, or even rusty iron. It is important that the wire is not too slippery, otherwise the bubble will easily fall behind it.

If you have a wire insulated with yarn or rusty, make a cube out of it with sides of about 7 cm. Attach a U-shaped bracket-handle to the top of the cube so that it is convenient to hold it.

Immerse the entire cube in the soap solution and carefully pull it out. Maybe you expected to get just a bubble in the form of a cube? Nothing like it! That is, a cube will turn out, but in its center there will be another small square connected by oblique films with the edges of the cube!

Soap bubbles on a stand

Immerse the wire cube again into the solution, but only with one bottom plane. You will see a new transformation: a small cube of soap film will appear in the middle of the cube, and around it - six regular pyramids. And all this fragile structure will shimmer with red and yellow, green and blue!

Touch one of the planes of the large cube with the corner of a blotting paper - and the inner cube will instantly turn back into a square!

Author: Galpershtein L.Ya.

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