A classical image of an atom is portrayed with an electron whizzing around the nucleus. They are all portrayed as balls, which is false.

Physics, Secondary ed level

This is not an atom

The standard cartoon of an atom is incorrect. An atom is not like a tiny planetary system. Quantum mechanics is all about the wave function. Let’s observe this carefully. Continue reading This is not an atom

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KJ Runia2020-02-202020-07-021 Comment

Physics, Secondary ed level

A radioactive smoking gun

Even physics tells us that smoking is bad. We briefly discuss what radioactivity is, what ionising radiation is, and how radioactive lungs become. Continue reading A radioactive smoking gun

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KJ Runia2019-08-092020-07-02