|
Columbian Press
The Columbian press is a type of hand-operated printing press invented in the United States by George Clymer, around 1813. Made from cast iron, it was a very successful design and many thousands were made by him and by others during the 19th century. Columbians continued to be made as late as the early-20th century, 90 years after their introduction. Despite their age, many are still used for printing, especially by artists who make prints using traditional methods. The Columbian design is also notable for its elaborate, symbolic ornamentation. History The Columbian press was inspired in some measure by the earlier Stanhope press. It was designed to allow large formes, such as a broadsheet newspaper page, to be printed at a single pull. The press worked by a lever system, similar to that of the Stanhope press and quite different from the toggle action of the slightly later English Albion press. George Clymer first began working on improvements to the printing press around 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Printing Press, D&J Greig, Edinburgh, C 1860 CE
Printing is a process for mass reproducing text and Printmaking, images using a master form or template. The earliest non-paper products involving printing include cylinder seals and objects such as the Cyrus Cylinder and the Cylinders of Nabonidus. The earliest known form of printing as applied to paper was woodblock printing, which appeared in China before 220 AD for cloth printing. However, it would not be applied to paper until the seventh century.Shelagh Vainker in Anne Farrer (ed), "Caves of the Thousand Buddhas", 1990, British Museum publications, Later developments in printing technology include the movable type invented by Bi Sheng around 1040 AD and the printing press invented by Johannes Gutenberg in the 15th century. The technology of printing played a key role in the development of the Renaissance and the Scientific Revolution and laid the material basis for the modern knowledge-based economy and the spread of learning to the masses. History Woodblock printing W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Licensed Production
Licensed production is the production under license of technology developed elsewhere. The licensee provides the licensor of a specific product with legal production rights, technical information, process technology, and any other proprietary components that cannot be sourced by the licensor. This is an especially prominent commercial practice in developing nations, which often approach licensed production as a starting point for indigenous industrial development. While licensed production in developing nations provides stimulus to the production and technical capabilities of local industry, in many cases it remains at least partly dependent on foreign support. History The four most common applications of licensed production have historically been automotive engines and parts, weaponry, aircraft, and pharmaceuticals. During World War I, it was more common for licensing agreements to take place between companies in the same country; for example, Opel was granted a license to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermes
Hermes (; ) is an Olympian deity in ancient Greek religion and mythology considered the herald of the gods. He is also widely considered the protector of human heralds, travelers, thieves, merchants, and orators. He is able to move quickly and freely between the worlds of the mortal and the divine aided by his winged sandals. Hermes plays the role of the psychopomp or "soul guide"—a conductor of souls into the afterlife. In myth, Hermes functions as the emissary and messenger of the gods, and is often presented as the son of Zeus and Maia, the Pleiad. He is regarded as "the divine trickster", about which the '' Homeric Hymn to Hermes'' offers the most well-known account. Hermes's attributes and symbols include the herma, the rooster, the tortoise, satchel or pouch, talaria (winged sandals), and winged helmet or simple petasos, as well as the palm tree, goat, the number four, several kinds of fish, and incense. However, his main symbol is the ''caduceus'', a wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caduceus
The caduceus (☤; ; , ) is the staff carried by Hermes in Greek mythology and consequently by Hermes Trismegistus in Greco-Egyptian mythology. The same staff was borne by other heralds like Iris (mythology), Iris, the messenger of Hera. The short staff is entwined by two serpent (mythology), serpents, sometimes surmounted by wings. In Roman iconography, it was depicted being carried in the left hand of Mercury (mythology), Mercury, the messenger of the gods. Some accounts assert that the oldest imagery of the caduceus is rooted in Mesopotamia with the Sumerian god Ningishzida; his symbol, a staff with two snakes intertwined around it, dates back to 4000 BC to 3000 BC. This iconography may have been a representation of two snakes copulating. As a symbol, it represents Hermes (or the Roman Mercury), and by extension trades, occupations, or undertakings associated with the god. In later Classical antiquity, Antiquity, the caduceus provided the basis for the astronomic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jupiter (mythology)
Jupiter ( or , from Proto-Italic language, Proto-Italic "day, sky" + "father", thus "sky father" Greek: Zeus, Δίας or Zeus, Ζεύς), also known as Jove (nominative case, nom. and genitive case, gen. ), is the sky god, god of the sky and god of thunder, thunder, and king of the gods in ancient Roman religion and Roman mythology, mythology. Jupiter was the chief deity of Roman state religion throughout the Roman Republic, Republican and Roman Empire, Imperial eras, until Constantine the Great and Christianity, Christianity became the dominant religion of the Empire. In Roman mythology, he negotiates with Numa Pompilius, the second king of Rome, to establish principles of Roman religion such as offering, or sacrifice. Jupiter is thought to have originated as a sky god. His identifying implement is the thunderbolt and his primary sacred animal is the eagle, which held precedence over other birds in the taking of auspices and became one of the most common symbols of the Roma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olive Branch
The olive branch, a ramus of '' Olea europaea'', is a symbol of peace. It is generally associated with the customs of ancient Greece and ancient Rome, and is connected with supplication to divine beings and persons in power. Likewise, it is found in most cultures of the Mediterranean Basin and thence expanded to become an almost universally recognized peace symbol in the modern world. In the Greco-Roman world In Greek tradition, a ''hiketeria'' (ἱκετηρία) was an olive branch held by supplicants to show their status as such when approaching persons of power or in temples when supplicating the gods. In Greek mythology, Athena competed with Poseidon for possession of Athens. Poseidon claimed possession by thrusting his trident into the Acropolis, where a well of sea-water gushed out. Athena took possession by planting the first olive tree beside the well. The court of gods and goddesses ruled that Athena had the better right to the land because she had given it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornucopia
In classical antiquity, the cornucopia (; ), also called the horn of plenty, was a symbol of abundance and nourishment, commonly a large horn-shaped container overflowing with produce, flowers, or nuts. In Greek, it was called the " horn of Amalthea" (), after Amalthea, a nurse of Zeus, who is often part of stories of the horn's origin. Baskets or panniers of this form were traditionally used in western Asia and Europe to hold and carry newly harvested food products. The horn-shaped basket would be worn on the back or slung around the torso, leaving the harvester's hands free for picking. In Greek/Roman mythology Mythology offers multiple explanations of the origin of the cornucopia. One of the best-known involves the birth and nurturance of the infant Zeus, who had to be hidden from his devouring father Cronus. In a cave on Mount Ida on the island of Crete, baby Zeus was cared for and protected by a number of divine attendants, including the goat Amalthea ("Nourish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim who were three former employees of PayPal. Headquartered in San Bruno, California, it is the second-most-visited website in the world, after Google Search. In January 2024, YouTube had more than 2.7billion monthly active users, who collectively watched more than one billion hours of videos every day. , videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and , there were approximately 14.8billion videos in total. On November 13, 2006, YouTube was purchased by Google for $1.65 billion (equivalent to $ billion in ). Google expanded YouTube's business model of generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by and for YouTube. It also offers YouTube Premium, a paid subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counterweight
A counterweight is a weight (object), weight that, by applying an opposite force, provides balance and stability of a machine, mechanical system. The purpose of a counterweight is to make lifting the load faster and more efficient, which saves energy and causes less wear and tear on the lifting machine. Counterweights are often used in traction force, traction elevator, lifts (elevators), Crane (machine), cranes and fair, funfair rides. In these applications, the expected load multiplied by the distance that load will be spaced from the central support (called the "tipping point") must be equal to the counterweight's mass times its distance from the tipping point in order to prevent over-balancing either side. This distance times mass is called the Moment (physics), load moment. By extension, a counterbalance force balances or offsets another force, as when two objects of equal weight, power, or influence are acting in opposition to each other. Examples ;Trebuchet: There are fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bald Eagle
The bald eagle (''Haliaeetus leucocephalus'') is a bird of prey found in North America. A sea eagle, it has two known subspecies and forms a species pair with the white-tailed eagle (''Haliaeetus albicilla''), which occupies the same niche as the bald eagle in the Palearctic. Its range includes most of Canada and Alaska, all of the contiguous United States, and northern Mexico. It is found near large bodies of open water with an abundant food supply and old-growth trees for nesting. The bald eagle is an opportunistic feeder that subsists mainly on fish, upon which it swoops down and snatches from the water with its talons. It builds the largest nest of any North American bird and the largest tree nests ever recorded for any animal species, up to deep, wide, and in weight. Sexual maturity is attained at the age of four to five years. Bald eagles are not bald; the name derives from an older meaning of the word, "white-headed". The adult is mainly brown with a white head ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columbian Printing Press (National Museum Of Scotland) 04
The Columbian press is a type of hand-operated printing press invented in the United States by George Clymer, around 1813. Made from cast iron, it was a very successful design and many thousands were made by him and by others during the 19th century. Columbians continued to be made as late as the early-20th century, 90 years after their introduction. Despite their age, many are still used for printing, especially by artists who make prints using traditional methods. The Columbian design is also notable for its elaborate, symbolic ornamentation. History The Columbian press was inspired in some measure by the earlier Stanhope press. It was designed to allow large formes, such as a broadsheet newspaper page, to be printed at a single pull. The press worked by a lever system, similar to that of the Stanhope press and quite different from the toggle action of the slightly later English Albion press. George Clymer first began working on improvements to the printing press around 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
