What is the sun?
The sun is the most primitive form of hours. The simplest sun consists of a wand set in the ground that casts a shadow indicating the time of day. In addition, it was clear that the sun rose above one horizon and planted in the other. It is certain that the shadows throw themselves while the sun has taken the way through the sky, the announcement of primitive people did not escape. The morning shadows were long, gradually shortened to disappear at noon, then re -extended in the opposite direction and watched the sunset. The shadow cast would be a natural tool for telling time.
No one can be sure when the first sunlight appeared, but we know that already at 3500 ° C. The Egyptians built solar points that not only kept time but indicated the longest and shortest day of the year.
The sun is usually produced with a lower circular disk that represents the face of the clock on which there are segmented lines indicating the clock. The sun can also monitor the tides, seasons or equinoxes. In the middle stands an obelisk orGnomon A serves as an element that throws a shadow that indicates time. In the northern hemisphere, when the sun travels around the sky, the shadow will move clockwise. At local noon the shadow disappears.
In order to compensate the tilt of the ground on its axis, the solar clock can be tilted north. Otherwise, the Sun will not compensate for a slightly different path that the sun takes place every day when the Earth moves through seasons. The sun, which is tilted north, is called styles . Because their leveling compensates for the tilt of the ground, the clock marks can remain the same throughout the year.
The tongue that we use to maintain time refers to us back to the sundial. hour and mountain (Greek and Latin for itself), come har or mountains , ancient Egyptian word for "day" or "solar road". Egyptian god Horus with the head of a hawk and youLa man was the god of dawn.
The sun endured as the most accurate form of time leading, even after the invention of the clock. In fact, people used the sundial to reset the clock! With the advent of practical wristwatches, however, the sun viewers were included in beautiful garden decorations.
The largest sundial in the world is located in the amber Mantar observatory built by Jai Singh in northern India. It is called samrat yantra and the impressive towers of stone structures over 89 feet (27 meters) high. More surprising is that it is said that it is accurate in a fraction of a second!