What are the sundial?
Sun clock is the clock that uses the Sun movements to tell time. These clocks are somewhat limited because they do not work at night, but are the oldest form in the world and laid the foundations for the invention of later measurement devices. People continue to use sundial in different environments, both as news and real working hours that help communities watch time.
The earliest sundials divided the day into two parts: morning and afternoon. These clocks were designed by creating a large column or obelisk and monitoring the movement of the shadow thrown by this object when the sun moved during the day. The half of the day occurred when the shadow was the shortest, suggesting that the sun was directly above the head. Numerous Middle East cultures used this basic design, as well as the Egyptians. The sundial that would be recognizable for modern users, although the length of hours could be slightly different than we are used to. Several cultures also invented versions, toThe teré could change to adapt to the season, and acknowledge that the sun is changing the location in the sky during the year, and some sundials marked the main events such as the sun and equinox, as well as the clock.
The sun is a classic example of sundial, although numerous variations of design have been developed by ancient cultures. Some communities also developed the human sundial, in which one stood on a clearly labeled data bar and checked time by seeing where his shadow had fallen. Human sundials are sometimes installed on the area of scientific museums and educational centers to make people interested in the history of time management and sundial.
In order to be properly placed for the solar clock, it must be properly placed. For example, someone who installs dialing the sun in northern width must be stuck by releasing time when you takeE consideration of the position of the Sun in relation to the lessons. The same position used in Kansas City by Missouri did not work in Capetown in South Africa, because the position of the sun in the sky is different. One way to do this is to focus on the sundial so that the shadow falls on noon when the sun is directly above the head, although there are also scientific calculations that can be used to place the sunshine.