To this experiment we need: a glass, a water, a coin.
We put coin on the table and cover it with glass. Look! We can see a coin. After that we pour water .... and now we can't see a coin. Why? Because of refraction.
hello! i´m a student of school Sagrado Corazon of Spain. I watched this experiment and it is fantastic because i can´t see the coin!! CONGRATULATIONS!! Jose Manuel Vazquez
hello! i´m a student of school Sagrado Corazon of Spain. I watched this experiment and it is fantastic because i can´t see the coin!! CONGRATULATIONS!! Jose Manuel Vazquez
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