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Bilge Pump
A bilge pump is a water pump used to remove bilge water. Since fuel can be present in the bilge, electric bilge pumps are designed to not cause sparks. Electric bilge pumps are often fitted with float switches which turn on the pump when the bilge fills to a set level. Since bilge pumps can fail, use of a backup pump is often advised. The primary pump is normally located at the lowest point of the bilge, while the secondary pump would be located somewhat higher. This ensures that the secondary pump activates only when the primary pump is overwhelmed or fails, and keeps the secondary pump free of the debris in the bilge that tends to clog the primary pump. Ancient bilge force pumps had a number of common uses. Depending on where the pump was located in the hull of the ship, it could be used to suck in sea water into a live fish tank to preserve fish until the ship was docked and the fish ready to be sold. Another use of the force pump was to combat fires. Water would again be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syracusia
''Syracusia'' (, ''syrakousía'', literally "of Syracuse") was an ancient Greek ship sometimes claimed to be the largest transport ship of antiquity. She was reportedly too big for any port in Sicily, and thus only sailed once from Syracuse in Sicily to Alexandria in the Ptolemaic Kingdom of Egypt, whereupon she was given as a present to Ptolemy III Euergetes. The exact dimension of Syracusia is unknown; Michael Lahanas put it at 55 m long, 14 m wide, and 13 m high. General characteristics ''Syracusia'' was designed by Archimedes and built around 240 BC by Archias of Corinth on the orders of Hieron II of Syracuse. The historian Moschion of Phaselis said that ''Syracusia'' could carry a cargo of some 1600 to 1800 tons and a capacity of 1,942 passengers. She reputedly bore more than 200 soldiers, as well as a catapult. She sailed only once to berth in Alexandria, where she was later given to Ptolemy (Ptolemaios) III Euergetes of Egypt and renamed ''Alexandreia'' (, literally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wikimedia Commons
Wikimedia Commons, or simply Commons, is a wiki-based Digital library, media repository of Open content, free-to-use images, sounds, videos and other media. It is a project of the Wikimedia Foundation. Files from Wikimedia Commons can be used across all of the Wikimedia projects in all languages, including Wikipedia, Wikivoyage, Wikisource, Wikiquote, Wiktionary, Wikinews, Wikibooks and Wikispecies, and can also be downloaded for offsite use. As of April 2025, the repository contains over 120 million free-to-use media files, managed and editable by registered volunteers.commons:Special:Statistics, Statistics page on Wikimedia Commons History The idea for the project came from Erik Möller in March 2004 and Wikimedia Commons was started on September 7, 2004. In July 2013, the number of edits on Commons reached 100,000,000. In 2018, it became possible to upload 3D models to the site in STL (file format), STL format. One of the first models uploaded to Commons was a reconstruc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hanging Gardens Of Babylon
The Hanging Gardens of Babylon were one of the Seven Wonders of the Ancient World listed by Hellenic culture. They were described as a remarkable feat of engineering with an ascending series of tiered gardens containing a wide variety of trees, shrubs, and vines, resembling a large green mountain constructed of mud bricks. It was said to have been built in the ancient city of Babylon, near present-day Hillah, Babil province, in Iraq. The Hanging Gardens' name is derived from the Greek word (, ), which has a broader meaning than the modern English word "hanging" and refers to trees being planted on a raised structure such as a terrace. According to one legend, the Hanging Gardens were built alongside a grand palace known as ''The Marvel of Mankind'', by the Neo-Babylonian King Nebuchadnezzar II (who ruled between 605 and 562 BC), for his Median wife, Queen Amytis, because she missed the green hills and valleys of her homeland. This was attested to by the Babylonian priest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitruvius
Vitruvius ( ; ; –70 BC – after ) was a Roman architect and engineer during the 1st century BC, known for his multi-volume work titled . As the only treatise on architecture to survive from antiquity, it has been regarded since the Renaissance as the first book on architectural theory, as well as a major source on the canon of classical architecture. It is not clear to what extent his contemporaries regarded his book as original or important. He states that all buildings should have three attributes: , , and ("strength", "utility", and "beauty"), principles reflected in much Ancient Roman architecture. His discussion of perfect proportion in architecture and the human body led to the famous Renaissance drawing of the ''Vitruvian Man'' by Leonardo da Vinci. Little is known about Vitruvius' life, but by his own descriptionDe Arch. Book 1, preface. section 2. he served as an artilleryman, the third class of arms in the Roman military offices. He probably served as a senior of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archimedes' Screw
The Archimedes' screw, also known as the Archimedean screw, hydrodynamic screw, water screw or Egyptian screw, is one of the earliest documented hydraulic machines. It was so-named after the Greek mathematician Archimedes who first described it around 234 BC, although the device had been developed in Egypt earlier in the century. It is a reversible hydraulic machine that can be operated both as a pump or a power generator. As a machine used for lifting water from a low-lying body of water into irrigation ditches, water is lifted 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. Run in reverse, Archimedes screw turbines act as a new form of small hydroelectric powerplant that can be applied even in low head sites. Such generators operate in a wide range of flows (0.01 m^3/s to 14.5 m^3/s) and heads (0.1 m to 10 m), including low heads and moderate flow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphrodite
Aphrodite (, ) is an Greek mythology, ancient Greek goddess associated with love, lust, beauty, pleasure, passion, procreation, and as her syncretism, syncretised Roman counterpart , desire, Sexual intercourse, sex, fertility, prosperity, and victory. Aphrodite's major symbols include seashells, Myrtle (common), myrtles, roses, doves, sparrows, and swans. The cult of Aphrodite was largely derived from that of the Ancient Canaanite religion, Phoenician goddess Astarte, a cognate of the East Semitic goddess Ishtar, whose cult was based on the Sumerian religion, Sumerian cult of Inanna. Aphrodite's main cult centers were Kythira, Cythera, Cyprus, Corinth, and Athens. Her main festival was the Aphrodisia, which was celebrated annually in midsummer. In Laconia, Aphrodite was worshipped as a warrior goddess. She was also the patron goddess of Prostitution in ancient Greece, prostitutes, an association which led early scholars to propose the concept of sacred prostitution in Greco-Rom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnasium (ancient Greece)
The gymnasium () in Ancient Greece functioned as a training facility for competitors in public games. It was also a place for socializing and engaging in intellectual pursuits. The name comes from the Ancient Greek term '' gymnós'', meaning "naked" or "nude". Only adult male citizens were allowed to use the gymnasia. Athletes competed nude, a practice which was said to encourage aesthetic appreciation of the male body, and to be a tribute to the gods. Gymnasia and palaestrae (wrestling schools) were under the protection and patronage of Heracles, Hermes and, in Athens, Theseus. Etymology The word ''gymnasium'' is the latinisation of the Greek noun γυμνάσιον (''gymnasion''), "public place for physical exercises; exercise area", in pl. "bodily exercises" and generally "school", which in turn is derived from the common Greek adjective (''gymnos'') meaning "naked" or "nude", by way of the related verb γυμνάζω (''gymnazo''), whose meaning is "to train naked", "t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Athenaeus
Athenaeus of Naucratis (, or Nαυκράτιος, ''Athēnaios Naukratitēs'' or ''Naukratios''; ) was an ancient Greek rhetorician and Grammarian (Greco-Roman), grammarian, flourishing about the end of the 2nd and beginning of the 3rd century AD. The ''Suda'' says only that he lived in the times of Marcus Aurelius, but the contempt with which he speaks of Commodus, who died in 192, implies that he survived that emperor. He was a contemporary of Adrantus. Athenaeus himself states that he was the author of a treatise on the ''thratta'', a type of fish mentioned by Archippus (poet), Archippus and other comic poets, and of a history of the Syrian kings. Both works are lost. Of his works, only the fifteen-volume ''Deipnosophistae'' mostly survives. The ''Deipnosophistae'' The ''Deipnosophistae'', which means 'dinner-table philosophers', survives in fifteen books. The first two books, and parts of the third, eleventh and fifteenth, are extant only in epitome, but otherwise the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Pump
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic or pneumatic energy. Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis. When a pump contains two or more pump mechanisms with fluid being directed to flow through them in series, it is called a ''multi-stage pump''. Terms such as ''two-stage'' or ''double-stage'' may be used to specifically describ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foot Power Bilge Pump
The foot (: feet) is an anatomical structure found in many vertebrates. It is the terminal portion of a limb which bears weight and allows locomotion. In many animals with feet, the foot is an organ at the terminal part of the leg made up of one or more segments or bones, generally including claws and/or nails. Etymology The word "foot", in the sense of meaning the "terminal part of the leg of a vertebrate animal" comes from Old English ''fot'', from Proto-Germanic *''fot'' (source also of Old Frisian ''fot'', Old Saxon ''fot'', Old Norse ''fotr'', Danish ''fod'', Swedish ''fot'', Dutch ''voet'', Old High German ''fuoz'', German ''Fuß'', Gothic ''fotus'', all meaning "foot"), from PIE root *''ped-'' "foot". The plural form ''feet'' is an instance of i-mutation. Structure The human foot is a strong and complex mechanical structure containing 26 bones, 33 joints (20 of which are actively articulated), and more than a hundred muscles, tendons, and ligaments.Podiatry Channel, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
