The Science of Soap Bubbles. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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The Science of Soap Bubbles. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Of course you were blowing bubbles. This is a very simple matter, accessible even to very young children. There would be soapy water and a straw!

But now you are no longer so small and even begin to get acquainted with physics. It's time for you to learn how to blow bubbles not somehow, but solidly, scientifically. It's harder than just blowing straws, But the bubbles will be very interesting!

Soap for soap bubbles is not suitable for everyone. The worst soapy water comes from the best toilet soaps. So you need to take household soap.

The most suitable for blowing bubbles is the so-called 72 percent, light. Good and 70 percent soap. But, at worst, the most common one is also suitable - 65 percent. It is still more suitable for our purpose than toilet.

Soap should be rubbed and diluted in soft, and even better in distilled water. Do not dilute too thinly: this will cause the bubbles to burst soon. Strain the solution through a clean cloth so that there are no undissolved pieces of soap left in it.

To make the bubbles stronger, it is good to add glycerin, two tablespoons for every three tablespoons of soap solution. Shake this mixture well and let stand until a white foam forms on its surface. Remove the foam, and keep the finished solution in a tightly corked bottle. It can be stored for several days.

The tube for bubbles is also not suitable for everyone. With a straw, real or plastic, or a glass tube, only small bubbles can be blown. If you split a straw or put a circle of cork or school gum on the end of the tube, this will serve as support for the bubbles. You can blow bigger bubbles. For the largest bubbles, you will need a funnel or a toy children's pipe. With the help of a funnel, you can blow out a giant bubble with a diameter of up to 30 cm. Of course, you will have to blow intermittently, each time pinching the hole. "With one spirit" you cannot inflate such a bubble: almost a bucket of air enters it!

Wet the edges of the tube or funnel well with the solution. Otherwise, the bubbles burst when descending. And the saliva that got into the tube is also the enemy of bubbles. And even a drop of soap solution hanging on the bottom of the bubble is very dangerous. Carefully remove it with a finger dipped in the solution so that the sissy bubble does not burst!

Well, that's the whole science of bubbles. Now get down to business!

Author: Galpershtein L.Ya.

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