How does a photocopier work?
Reading Time: 2 minutes We all know the difference between an insulating and a conductor. Despite that there are also materials which, depending on… Read More »How does a photocopier work?
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Why is the sky blue?
Reading Time: 3 minutes It is easy to see that the sky is blue. Have you ever wondered why? A lot of other smart… Read More »Why is the sky blue?