Capillarity and the mixing of colours. Do you dare to?

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We all love experiments, which is why we’re going to learn a little about the capillarity of water and the mixing of primary colours. It’s so easy and such fun! One of the physical properties of water is its capillarity, thanks to which water moves through very minute canals. Today’s experiment will help us understand this notion and also enable us to discover how secondary colours are formed.

Materials:

  • Three glasses with water
  • Three empty ones
  • Edible red, yellow and blue dyes
  • Kitchen paper

Follow these steps:

  1. Pour water into three glasses until they’re half full and put one of the three colours you want to mix together in each one.
  2. Make rolls of the kitchen paper (by twisting or folding it)
  3. Stand the glasses in a row, alternating the full and empty ones.
  4. Connect the glasses in a series with the kitchen paper
  5. The rolled kitchen paper must reach down into the bottom of the glasses.
  6. Make sure the rolled papers do not touch each other in the middle glasses.
  7. Be patient, it’s a good idea to wait until tomorrow. And, le voilà!

Can there be a more original and amusing way of studying colours?

boboliland

Discovery magazine

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