People stand in front a large aquarium. Fishes and sharks swim in it.

Physics, Secondary ed level, Tutorial

Why is glass transparent?

If all things consist of molecules, why is it that some materials are transparent while others aren’t? Why is glass transparent? Continue reading Why is glass transparent?

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KJ Runia2020-09-222022-10-21

Physics, Secondary ed level, Tutorial

The double-slit experiment

We describe the famous double-slit experiment, which proved to be fundamental to our current understanding of quantum physics. Continue reading The double-slit experiment

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KJ Runia2020-05-022020-07-01

A modern kitchen with a microwave oven. Is the radiation of a microwave oven unhealthy?

Physics, Secondary ed level, Tutorial

Is microwave oven radiation unhealthy?

We discuss what electromagnetic radiation is and why ionising radiation is dangerous. We discuss how a microwave oven heats up food, and vitamins too. Continue reading Is microwave oven radiation unhealthy?

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KJ Runia2019-07-072020-07-161 Comment