Astronomy was very important to the ancient Egyptians, who observed the sky periodically. The astronomers named what they saw in the sky, and used their observations to create the Egyptian calendar. And was the beginning of the year when the ancient Egyptians declare with the arrival of water flooding of the Nile; They observed that the flood comes with the emergence of star Sirius, the brightest stars in the sky (to the south). The incident represented the beginning of the agricultural year in Egypt. Formed that year of 365 days; divided into twelve months, each in thirty days. They made the remaining five days (days postponing) Birthdays days added to the end of the year. Months of the year as divided into three seasons: the flood season, the planting season, and the harvest season. The ancient Egyptians recorded by the king assumed power in the country and documents; starting day of year, the season, month and day.
The ancient Egyptians used equipment or reagents, to monitor the polar star; They would then draw the center line north to the south; on the ground, to determine the direction and location of the star. A step that was necessary for the proper orientation of important building projects. It was one of those devices called "Mrecht," which can mean "revealing indicator." It consists of a narrow wooden bar with a hole in one end; astronomer would look through it, to fix the position of the star. There is another device called the "bay Emmy Onott", which means the rib (cranium) Palm. And the device slot or incision figure 7, made at the wider end; a hole through which the priest in charge of tracking hours, in order to be able to locate the star.
In the Ptolemaic era, Claudius Ptolemy, an astronomer and mathematician, and geographer, studying data left behind by his predecessors; to map the sites of about a thousand stars. He compiled a list of 48 groups with an asterisk (towers), and a description of latitude and longitude of the planet. He believed that the earth is the center of the universe, and work to advance this theory. The further development of the Ptolemaic system; to explain why some planets seemed to move backwards for periods of time, in their orbits around the Earth. It was assumed that each planet has a rotation in a smaller rotation last in a larger circle, which is called the "epicycle." The theory that prevailed for about 1400 years ago, proved that the earth's rotation itself in orbit around the sun.
In the Greco-Romans used a calendar based on the accounts of the Julian calendar, which was adopted on a leap year. And the adoption of the Copts in Egypt that calendar; to follow the sun and calculate the days, seasons, and solar years. The lunar year is also important, as was used to determine the date of Easter Holiday; and other important religious holidays. As the Ptolemaic era also saw the invention of the astrolabe; a navigational tool that was perfected in the era of succession and the mandate of the rulers of the Muslims. The astrolabe played an important role in guiding ships; whether for military or commercial purposes.
The ancient Egyptians used equipment or reagents, to monitor the polar star; They would then draw the center line north to the south; on the ground, to determine the direction and location of the star. A step that was necessary for the proper orientation of important building projects. It was one of those devices called "Mrecht," which can mean "revealing indicator." It consists of a narrow wooden bar with a hole in one end; astronomer would look through it, to fix the position of the star. There is another device called the "bay Emmy Onott", which means the rib (cranium) Palm. And the device slot or incision figure 7, made at the wider end; a hole through which the priest in charge of tracking hours, in order to be able to locate the star.
In the Ptolemaic era, Claudius Ptolemy, an astronomer and mathematician, and geographer, studying data left behind by his predecessors; to map the sites of about a thousand stars. He compiled a list of 48 groups with an asterisk (towers), and a description of latitude and longitude of the planet. He believed that the earth is the center of the universe, and work to advance this theory. The further development of the Ptolemaic system; to explain why some planets seemed to move backwards for periods of time, in their orbits around the Earth. It was assumed that each planet has a rotation in a smaller rotation last in a larger circle, which is called the "epicycle." The theory that prevailed for about 1400 years ago, proved that the earth's rotation itself in orbit around the sun.
In the Greco-Romans used a calendar based on the accounts of the Julian calendar, which was adopted on a leap year. And the adoption of the Copts in Egypt that calendar; to follow the sun and calculate the days, seasons, and solar years. The lunar year is also important, as was used to determine the date of Easter Holiday; and other important religious holidays. As the Ptolemaic era also saw the invention of the astrolabe; a navigational tool that was perfected in the era of succession and the mandate of the rulers of the Muslims. The astrolabe played an important role in guiding ships; whether for military or commercial purposes.