Water clockA water clock or clepsydra (; ; water thief) is a timepiece by which time is measured by the regulated flow of liquid into (inflow type) or out from (outflow type) a vessel, and where the amount is then measured. Water clocks are one of the oldest time-measuring instruments. The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon, Egypt, and Persia around the 16th century BC. Other regions of the world, including India and China, also have early evidence of water clocks, but the earliest dates are less certain.
BallistaThe ballista (Latin, from Greek βαλλίστρα ballistra and that from βάλλω ballō, "throw"), plural ballistae, sometimes called bolt thrower, was an ancient missile weapon that launched either bolts or stones at a distant target. Developed from earlier Greek weapons, it relied upon different mechanics, using two levers with torsion springs instead of a tension prod (the bow part of a modern crossbow). The springs consisted of several loops of twisted skeins. Early versions projected heavy darts or spherical stone projectiles of various sizes for siege warfare.
Kingdom of PergamonThe Kingdom of Pergamon, Pergamene Kingdom, or Attalid kingdom was a Greek state during the Hellenistic period that ruled much of the Western part of Asia Minor from its capital city of Pergamon. It was ruled by the Attalid dynasty (ˈætəlᵻd; Δυναστεία των Ατταλιδών). The kingdom was a rump state that was created from the territory ruled by Lysimachus, a general of Alexander the Great. Philetaerus, one of Lysimachus' lieutenants, rebelled and took the city of Pergamon and its environs with him; Lysimachus died soon after in 281 BC.
AgrigentoAgrigento (aɡriˈdʒɛnto; Girgenti dʒɪɾˈdʒɛndɪ or Giurgenti dʒʊɾˈdʒɛndɪ; Ἀκράγας; Agrigentum or Acragas; Kirkant, or جرجنت Jirjant) is a city on the southern coast of Sicily, Italy and capital of the province of Agrigento. It was one of the leading cities of Magna Graecia during the golden age of Ancient Greece. Akragas was founded on a plateau overlooking the sea, with two nearby rivers, the Hypsas and the Acragas, after which the settlement was originally named.
EratosthenesEratosthenes of Cyrene (ɛrəˈtɒsθəniːz; Ἐρατοσθένης eratosthénɛːs; 276 BC – 195/194 BC) was a Greek polymath: a mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. His work is comparable to what is now known as the study of geography, and he introduced some of the terminology still used today. He is best known for being the first person known to calculate the circumference of the Earth, which he did by using the extensive survey results he could access in his role at the Library; his calculation was remarkably accurate.
Ancient RomeIn modern historiography, ancient Rome refers to Roman civilisation from the founding of the Italian city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. It encompasses the Roman Kingdom (753–509 BC), Roman Republic (509–27 BC), and Roman Empire (27 BC–476 AD) until the fall of the western empire. Ancient Rome began as an Italic settlement, traditionally dated to 753 BC, beside the River Tiber in the Italian Peninsula.
Venus de MiloThe Venus de Milo (də_ˈmaɪloʊ,_də_ˈmiːloʊ ; Aphrodítē tēs Mḗlou) or Aphrodite of Melos is an ancient Greek sculpture that was created during the Hellenistic period. It is one of the most famous works of ancient Greek sculpture, having been prominently displayed at the Louvre Museum since shortly after the statue was rediscovered on the island of Milos, Greece, in 1820. The Venus de Milo is believed to depict Aphrodite, the Greek goddess of love, whose Roman counterpart was Venus.
Archimedes' screwThe Archimedes screw, also known as the Archimedean screw, hydrodynamic screw, water screw or Egyptian screw, is one of the earliest hydraulic machines. Using Archimedes screws as water pumps (Archimedes screw pump (ASP) or screw pump) dates back many centuries. As a machine used for transferring water from a low-lying body of water into irrigation ditches, water is pumped by turning a screw-shaped surface inside a pipe. In the modern world, Archimedes screw pumps are widely used in wastewater treatment plants and for dewatering low-lying regions.
CleopatraCleopatra VII Thea Philopator (, lit. Cleopatra "father-loving goddess"; 70/69 BC - 10 August 30 BC) was Queen of the Ptolemaic Kingdom of Egypt from 51 to 30 BC, and its last active ruler. A member of the Ptolemaic dynasty, she was a descendant of its founder Ptolemy I Soter, a Macedonian Greek general and companion of Alexander the Great. After the death of Cleopatra, Egypt became a province of the Roman Empire, marking the end of the last Hellenistic period state in the Mediterranean and of the age that had lasted since the reign of Alexander (336–323 BC).
Ancient GreeceAncient Greece (Hellás) was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity (600 AD), that comprised a loose collection of culturally and linguistically related city-states and other territories. Most of these regions were officially unified only once, for 13 years, under Alexander the Great's empire from 336 to 323 BC (though this excludes a number of Greek city-states free from Alexander's jurisdiction in the western Mediterranean, around the Black Sea, Cyprus, and Cyrenaica).
