2200 year-old: the Antikythera computer

2200 year-old: the Antikythera computer

2200 year-old calculator: the Antikythera computer Computers: someone or something that calculates something. That would be the general idea. But (machine) computers don't have to be digital. In 1901, divers found the Antikythera mechanism in a shipwreck in the Aegean sea. It is old. Very old. Estimated, in fact, to be from 200-100 BC. That would ...
Dangerous tectonic visualisations

Dangerous tectonic visualisations

Dangerous tectonic visualisations: Visualisations are good things. They should be beautiful to look at, informative and invite discovery. But they can be very dangerous. Visualisations can be used to make decisions, learn something new, connect surprising dots, showing unknown connections. If you want to buy a car, you might find a visualisation that shows the ...
geologic timeline spiral

Scalable geologic timeline II

For the geo-geeks out there, I have finished my geologic timescale brush; now better and more accurate than the previous one. Download the Illustrator file here Download .EPS file here Included is a swatch folder with all the colours as per the instructions of the International Commission on Stratigraphy: You are welcome to use this in ...
Oblate spheroid

Smarties and the shape of the earth

The sphere is, according to Wikipedia, a reasonably correct model for earth. But mathematically the earth is  an oblate spheroid. An example of that would be smarties and M&Ms, spheres squished at the poles. As a result of gravitation and the rotation of earth, it is about 21 km longer than the Earth’s polar radius. This is, of course, ...
dodecahedron

Platos sacred geometry

Plato's sacred geometry: In  Euclidean geometry there are five Platonic solids. Each of them was associated with an element, and since there are five, one of these shapes were considered sacred by the old Greeks, and to know the shape, and to share that knowledge was punishable. Platonic solids have clear definitions, to quote Wikipedia: ...