Why can blow a bubble of soap

This is because the soap water can form a layer of soap film, soap membrane is not easily broken.When you blow, soap film will swell up bit by bit, into a soap bubble, just like blowing balloons.If you want to blow out a lot of soap bubbles, you can put a little starch or protein in soap and water, they can make the soap film is not easy to break.If you observe carefully, the bubble will be colorful in the sunshine.This is because: the seemingly colorless sunshine is actually composed of red, orange, yellow, green, green, blue, purple and so on seven kind of monochromatic light after light, if somewhere in soap film reflected red just make two phase offset, can't see the red and turquoise, in a place like this in the same way, in another part, its some kind of light is strengthened, the present is another kind of color.Soap bubbles is made up of a layer of thin, like a transparent cellophane soap membrane formed, when the sun shot to soap membrane, it can produce the inside and outside of the reflection.

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