Category: Astronomy

Earth Moon - NASA

A few months ago I released an experiment video explaining how Eratosthenes calculated the circumference of the Earth using the shadow of sticks. The method was performed almost two millenia ago, and produced quite accurate results (considering the ‘equipment’ used). But it was far from being the only (or first) method to understand our planet’s shape.

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If I sail a ship to the far far seas, continue on, and on, and on and– well, you got the point. Where will I find myself? Well, if I travel in a more-or-less straight line (ignoring weather or geography, or time constraints, or my pending homework) I will end up right where I started. Why? Because the Earth is round. Duh.

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You probably hear this every day, that weird phenomenon sounds makes when it whooshes you by quickly. In fact, the entire ‘whoosh’ effect – that ‘zzzzzzzzzzzhoooooooom!’ that seems all children are familiar with and use as a description for a passing car is a great hint that something is going on.

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We’re SmarterThanThat

The scientific method is all around you, and you use it without even noticing. Science can be fun, interesting and engaging; you don't have to be a nerd to enjoy understanding the world around you. Read More...

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