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

Physics, Secondary ed level, Tutorial

Why, exactly, do glass and liquids refract light?

We provide a semi-in-depth look into why glass and liquids bend light. We discuss quantum fields, Maxwell’s equations, and vectors. No calculations. Continue reading Why, exactly, do glass and liquids refract light?

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KJ Runia2019-06-302022-10-21

Level 1 Undergraduate, Physics, Secondary ed level, Tutorial

The formula that got Albert Einstein the Nobel Prize and should stop us getting sunburn all the time

Albert Einstein didn’t win the Nobel Prize with his famous formula from the special theory of relativity. What formula did he win the Prize with then? Continue reading The formula that got Albert Einstein the Nobel Prize and should stop us getting sunburn all the time

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KJ Runia2019-03-102020-07-02