Wednesday, May 31, 2017
Minoan eclipse calculator
A stone die of the Minoan period, discovered near Palaikastro in Crete, Greece, in 1899, was selected for this study as bearer of astronomical significance. Strong evidence is presented in favor of its use (especially of the “ray-bearing” disc on its right-hand side) as a die for the construction of a device that could determine eclipse dates during the Minoan period (circa 15th century BC); additionally, two more practical uses for it are examined: as a sundial and as an instrument for the determination of the geographical latitude.
Pythagorean theorem
In mathematics, the Pythagorean theorem, also known as Pythagoras's theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. The theorem can be written as an equation relating the lengths of the sides a, b and c, often called the "Pythagorean equation" a2 + b2 = c2
Tuesday, May 30, 2017
Posidonius
Posidonius was celebrated as a polymath throughout the Graeco-Roman world because he came near to mastering all the knowledge of his time, similar to Aristotle and Eratosthenes. He attempted to create a unified system for understanding the human intellect and the universe which would provide an explanation of and a guide for human behavior.
Monday, May 29, 2017
Sunday, May 28, 2017
Saturday, May 27, 2017
Wednesday, May 24, 2017
Tuesday, May 23, 2017
Mycenaean Pottery
The pottery of the Mycenaean
civilization (1550-1050 BCE), although heavily influenced by the earlier
Minoans based on Crete, nevertheless, added new pottery shapes to the
existing range and achieved its own distinctive decorative style which was
strikingly homogenous across Mycenaean Greece. Mycenaean wares
typically display stylized representations of marine and plant life and show a
fondness for minimalistic linear designs, a trend which would go on to
influence the early pottery of Archaic and Classical Greece from the 9th
century BCE.
Mycenaean pottery
Monday, May 22, 2017
Saturday, May 20, 2017
Ancient crypto stick
In cryptography, a scytale (rhymes approximately with Italy ;
also transliterated skytale, Greek σκυτάλη "baton") is a tool used
to perform a transposition cipher, consisting of a cylinder with
a strip of parchment wound around it on which is written a message. The ancient
Greeks, and the Spartans in particular, are said to have used this
cipher to communicate during military campaigns.
The recipient uses a rod of the same diameter on
which the parchment is wrapped to read the message. It has the advantage of
being fast and not prone to mistakes—a necessary property when on the
battlefield. It can, however, be easily broken. Since the strip of
parchment hints strongly at the method, the cipher text would have to
be transferred to something less suggestive, somewhat reducing the advantage
noted.
Skytale
Friday, May 19, 2017
Temple of Aphaea
The Temple of Aphaia (Greek: Ναός Αφαίας) or Afea is located within a sanctuary complex dedicated to the goddess Aphaia on the Greek island of Aigina, which lies in the Saronic Gulf. Formerly known as the Temple of Jupiter Panhellenius, the great Doric temple is now recognized as dedicated to the mother-goddess Aphaia. It was a favorite of the neoclassical and romantic artists such as J. M. W. Turner. It stands on a c. 160 m peak on the eastern side of the island approximately 13 km east by road from the main port.
Temple of Aphaea Aigina
Lucian True History
A True
History or A True Story (Ancient Greek: Ἀληθῆ διηγήματα, Alēthē diēgēmata; Latin: Vera
Historia) is a parody of travel tales, by the Greek-speaking Assyrian author Lucian of Samosata,
the earliest known fiction about travelling to outer space, alien life-forms
and interplanetary warfare. Written in the 2nd century, the novel has been
referred to as "the first known text that could be called science
fiction". The work was intended by Lucian as a satire against
contemporary and ancient sources, which quote fantastic and mythical events as
truth.
LucianThursday, May 18, 2017
Tuesday, May 16, 2017
The Phaeacians ships
Therefore, Sir, do you
on your part affect no more concealment nor reserve in the
matter about which I shall ask you; it will be more polite
in you to give me a plain answer; tell me the name by which your father and mother over yonder used to call you, and by which you
were known among your neighbours and fellow-citizens. There is no one, neither rich nor poor, who is
absolutely without any name whatever, for people's fathers and
mothers give them names as soon as they are born. Tell me also your country, nation, and city, that our ships may shape their purpose
accordingly and take you there. For the Phaeacians have no
pilots; their vessels have no rudders as those of other
nations have, but the ships themselves understand what it
is that we are thinking about and want; they know all the cities and countries in the whole world, and can traverse the sea just as
well even when it is covered with mist and cloud, so that
there is no danger of being wrecked or coming to any harm.
Still I do remember hearing my father say that Neptune was
angry with us for being too easy-going in the matter of
giving people escorts. He said that one of these days he should wreck a ship of ours as it was returning from having escorted some
one, and bury our city under a high mountain. This is what
my used to say, but whether the god will carry out his
threat or no is a matter which he will decide for himself.
Read also
Tuesday, May 9, 2017
Wednesday, May 3, 2017
Aristarchus of Samos
Aristarchus of Samos
the Greek astronomer who maintained that Earth rotates on its
axis and revolves around the Sun.
Read also
Copernican System
Monday, May 1, 2017
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