Why was the sundial invented?
Consequently, why was the sundial important?
Introduction. A sundial uses local solar time. Before the invention of the clock the sundial was the only source of time, after the invention, the sundial became more important as the clock needed to be reset regularly from a sundial- as its accuracy was poor. A clock and a dial were used together to measure longitude.
Also, what was the first sundial made of? Past sundial discoveries date to the Greco-Roman period, which lasted from about 332 B.C. to A.D. 395. The sundial is made of a flattened piece of limestone, called an ostracon, with a black semicircle divided into 12 sections drawn on top.
Just so, how was the sundial invented?
The Babylonian astronomer Berosus (flourished c. 290 bce) invented a variant of this sundial by cutting away the part of the spherical surface south of the circular arc traced by the shadow tip on the longest day of the year.
How did a sundial work?
When the earth rotates about its axis, the sun appears to “move” across the sky, causing objects to cast shadows. A sundial contains a gnomon, or a thin rod, that casts a shadow onto a platform etched with different times. As a result of the tilt of the earth's axis, the visible movement of the sun changes daily.