Historical events related to imperialism in africa
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The Greek engineer Ctesibius of Alexandria is credited with inventing the pipe organ in the 3rd century B.C. and improving the clepsydra, the most accurate clock for more than 1,800 years
As a prominent cultural center, Alexandria triggered the beginning of the golden age of innovation and progress in the ancient world. The city was envisioned by Ptolemy I who reigned Egypt following the death of Alexander the Great in 323 B.C. By settling Alexandria on the Meditarreanan coast of Egypt, Ptolemy enabled the exchange of knowledge and culture among the ancient Greek and Egyptian societies.
Ctesibius, for one, was a Greek inventor and mathematician who worked in Alexandria during the reign of the Ptolemaic dynasty. A notable figure, Ctesibius was probably the first head of the Museum of Alexandria. This was one of the central and most important institutions founded by Ptolemy, or possibly his son, Ptolemy II Philadelphus. The museum, sometimes called The Institution of the Muses, also included the famous Library of Alexandria. The institution as a whole was a center of music and poe
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A primate of this period, at ease both in the trees and on the ground, is probably the common ancestor of gorillas, chimpanzees and humans
Go to Simiiformes in A Dictionary of Zoology (3 ed.)
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Various species of ape develop the habit of walking upright on two feet
Go to Paranthropus in A Dictionary of Zoology (3 ed.)
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Certain primates, in eastern and southern Africa, are by now sufficiently like humans to be classed as hominids
Go to hominid in A Dictionary of Biology (6 ed.)
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Ardi, the earliest known individual of partially human type (or hominid), is of the species Ardipithecus, in the Awash valley region of Ethiopia
Go to Ardi in New Oxford American Dictionary (3 ed.)
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Two or three hominid individuals, probably Australopithecus Afar Next I must tell about the machine of Ctesibius, which raises water to a height. Ctesibius or Ktesibios or Tesibius was a Greek inventor and mathematician in Alexandria, Ptolemaic Egypt. He wrote the first treatises on the science of compressed air and its uses in pumps and even in a kind of cannon. This, in combination with his work on the elasticity of air On pneumatics, earned him the title of "father of pneumatics." None of his written work has survived, including his Memorabilia, a compilation of his research that was cited by Athenaeus. Ctesibius' most commonly known invention today is a pipe organ hydraulis, on which the invention of the piano was later based. Ctesibius was probably the first head of the Museum of Alexandria. Very little is known of his life, but his inventions were well known. It is said possibly by Diogenes Laërtius that his first career was as a barber. During his time as a barber, he invented a counterweight-adjustable mirror. His other inventions include the hydraulis, a water organ that is considered the precursor of the modern pipe or
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Inventions
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