Columbus

20 08, 2017

Why does earth have weather? – Earth Science

By |2017-08-20T17:40:27-07:00August 20th, 2017|Physics|Comments Off on Why does earth have weather? – Earth Science

A thunderstorm in South Africa The weather on Earth happens because of the evaporation and condensation of water, and because of the spinning of the earth and the tilt of the earth on its axis. Does it [...]

4 08, 2017

Medieval sailing – Ships in medieval Europe

By |2018-10-04T07:02:49-07:00August 4th, 2017|Medieval, Science|Comments Off on Medieval sailing – Ships in medieval Europe

Caravels, about 1500 AD (Livro das Fortalezas de Duarte Damas) Frame-first ship construction The Early Middle Ages - about 500 AD - brought a major change in Mediterranean ship-building. Instead of putting the planks together [...]

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