The blacker, the lighter. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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The blacker, the lighter. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Take a shiny spoon. If it is well polished, it even seems to be a little mirror-like, reflecting something. Soot it over the flame of a candle, but blacker. Now the spoon doesn't reflect anything anymore! Soot absorbs all rays.

Dip the spoon into a glass of water. Look: it shone like silver! Where did the soot go? Washed off, right? You take out the spoon - it's still black ...

The point here is that soot particles are poorly wetted by water. Therefore, around a sooty spoon, a film is formed, as it were, a "water skin", with which you are already familiar. Like a soap bubble stretched over a spoon like a glove! But a soap bubble is shiny, it reflects light. This bubble surrounding the spoon also reflects.

You can, for example, smoke an egg over a candle and immerse it in water. It will shine there like silver. The blacker, the brighter!

Author: Galpershtein L.Ya.

We recommend interesting experiments in physics:

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