Medium scale 3.

Medium scale 3.

A torquetum: a medieval astronomical analogue computer, designed to take and convert measurements made in three sets of coordinates: Horizon, equatorial, and ecliptic. #history #astronomy #mathematics

A torquetum: a medieval astronomical analogue computer, designed to take and convert measurements made in three sets of coordinates: Horizon, equatorial, and ecliptic. #history #astronomy #mathematics

bosco chiesanuova | Flickr - Photo Sharing!

bosco chiesanuova | Flickr - Photo Sharing!

Orologio solare | Flickr - Photo Sharing!

Orologio solare | Flickr - Photo Sharing!

....camminando | Flickr - Photo Sharing!

....camminando | Flickr - Photo Sharing!

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