Greece – 10 euro silver, MATHEMATICIANS – EUCLID, 2023
Euclid is considered the father of geometry. He lived in Alexandria during the reign of Ptolemy I and must have flourished about 300 BC. His central work was the Elements, where he presented the fundamental concepts and principles of geometry and, based on five indemonstrable postulates or axioms (e.g. two points determine one and only one straight line), managed to summarise the geometric wisdom of the time in a comprehensible and coherent system, named Euclidean geometry in his honour.
His influence was so immense that it was not until the 19th century that a non-Euclidean geometry was developed. He also wrote Optics, Catoptrics, Conics, etc. They say that when Ptolemy once asked him if there was in geometry any shorter way than that of the Elements, he replied that there was no royal road to geometry.
THE AUTOMATIC MAIDSERVANT OF PHILO. GREEK CULTURE – ANCIENT GREEK TECHNOLOGY
The automatic maidservant of Philo is described in the Pneumatics of Philo of Byzantium, a 3rd century BC engineer who lived in Alexandria. It is an automaton (robot) in the form of a (life-size) maidservant holding a wine jug in her right hand.
Inside the effigy were two tanks, one for wine and one for water (as the Greeks used to drink their wine diluted), and a mechanism consisting of liquid and air tubes. By placing a cup on the extended left hand of the maidservant, the mechanism started to work.
Air pressure pushed the liquids (first wine and then water) through the right arm into the jug and then into the cup, in the desired proportion. The automatic maidservant is the first known functional robot.
Each Britannia 2023 bullion coin featuring the fifth and final effigy of Queen Elizabeth II has a limited production run.
A Britannia coin featuring King Charles III’s first effigy will be released in the new year.
The legendary figure of Britannia has symbolised Britain’s strength and integrity on coinage since Roman times. Little wonder then that the silver Britannia, with such a depth of history behind it, has been a popular choice with bullion investors ever since its introduction in 1997. This new specification combined with its tradition and integrity gives new life for today’s investment customer.
GREEK CULTURE – ANCIENT GREEK TECHNOLOGY – THE ANTIKYTHERA MECHANISM. The Antikythera mechanism was recovered from a shipwreck found in 1900 by sponge divers off the island of Antikythera.
Built in Hellenistic times, this intricate device was used for astronomical calculations and has been described as the oldest analogue computer. Its more than 30 bronze gearwheels rotated pointers over different dials. Thus, manually selecting a date on the main dial – which represented the zodiac, as well as the solar and lunar years – shifted the smaller gears, so that the pointers on the other dials indicated the position of the selected date in the four-year cycle of the Panhellenic games (Olympia, Pythia, Isthmia, Nemea), the positions of the five then-known planets and the correlation with astronomy cycles that were of particular interest to the ancient Greeks.
The mechanism also predicted solar and lunar eclipses. Research on the mechanism, which has fascinated scholars for decades, is still ongoing under the Antikythera Mechanism Research Project, which, using advanced imaging technologies, continues to provide impressive new insights into the mechanism’s complex inner workings.
Commemorative coin 2 euro dedicated to the anniversary of 200 years since the introduction of the first Greek constitution.
From 20 December 1821 to 16 January 1822, the revolted Greeks held their first National Assembly at Nea Epidavros (known then as Piada), which adopted modern Greece’s first government charter, the Provisional Constitution of Greece.
CULTURAL HERITAGE – THE ANCIENT THEATRE OF EPIDAURUS.
The ancient theatre of Epidaurus, one of the best preserved of antiquity, is located on the grounds of a sanctuary to the healing god Asclepius. Attributed to the architect Polykleitos, it was constructed in the late 4th century BC, with subsequent additions. The cavea of the theatre, built into the natural hillside, comprises an upper and lower tier, separated by a walkway. The circular orchestra, 19.54 m. in diameter, was where the chorus performed, while the actors moved about the proscenium of a two-storey stage building, of which only the foundations survive.
Excavated by Panagiotis Kavvadias in 1881-83, the theatre required only limited restoration. The first modern-day revival of Greek drama at Epidaurus was directed by Dimitris Rontiris in 1938. Since 1954, the theatre has become the venue of the Epidaurus Festival, hosting mainly ancient tragedy and comedy productions. Thousands of spectators thus have an opportunity every summer to admire the theatre’s renowned acoustics and enjoy the unique experience of ancient drama in its natural setting.