Paper Models of Ancient Greek Sundials

The first scientific instruments in history were Ancient Greek devices for tracking the sun across the sky and marking not only the divisions of the day but the divisions of the year as well. These are two paper models that you can make of classic Greek sundials. Paper Dome: https://www.astronomyforthinkers.com/... "Butterfly" Sundial: https://www.astronomyforthinkers.com/... Hemispherical Sundial https://www.astronomyforthinkers.com/... 00:00 Making a Recording of the Sky 01:00 Time-Lapse Photos of Sunrises and Sunsets 02:56 The "Highway" of the Sun Across the Sky 03:42 The Hemispherical Sundial 06:30 The Butterfly Sundial 08:52 Paper Sundials