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Medieval Dagger
A dagger is a fighting knife with a very sharp point and usually two sharp edges, typically designed or capable of being used as a thrusting or stabbing weapon.State v. Martin, 633 S.W.2d 80 (Mo. 1982): This is the dictionary or popular-use definition of a dagger, which has been used to describe everything from an ice pick to a folding knife with pointed blade as a 'dagger'. The Missouri Supreme Court used the popular definition of 'dagger' found in Webster's New Universal Dictionary ("a short weapon with a sharp point used for stabbing") to rule that an ordinary pointed knife with four-to-five inch blade constitutes a 'dagger' under the Missouri criminal code.California Penal Code 12020(a)(24):"dagger" means a ''knife or other instrument'' with or without a handguard that is ''capable of ready use as a stabbing weapon'' that may inflict great bodily injury or death. The State of California and other jurisdictions have seized upon the popular-use definition of a dagger to clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bone
A bone is a Stiffness, rigid Organ (biology), organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red blood cell, red and white blood cells, store minerals, provide structure and support for the body, and enable animal locomotion, mobility. Bones come in a variety of shapes and sizes and have complex internal and external structures. They are lightweight yet strong and hard and serve multiple Function (biology), functions. Bone tissue (osseous tissue), which is also called bone in the mass noun, uncountable sense of that word, is hard tissue, a type of specialized connective tissue. It has a honeycomb-like matrix (biology), matrix internally, which helps to give the bone rigidity. Bone tissue is made up of different types of bone cells. Osteoblasts and osteocytes are involved in the formation and mineralization (biology), mineralization of bone; osteoclasts are involved in the bone resorption, resor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteor Shower
A meteor shower is a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky. These meteors are caused by streams of cosmic debris called meteoroids entering Earth's atmosphere at extremely high speeds on parallel trajectories. Most meteors are smaller than a grain of sand, so almost all of them disintegrate and never hit the Earth's surface. Very intense or unusual meteor showers are known as meteor outbursts and meteor storms, which produce at least 1,000 meteors an hour, most notably from the Leonids. The Meteor Data Centre lists over 900 suspected meteor showers of which about 100 are well established. Several organizations point to viewing opportunities on the Internet. NASA maintains a daily map of active meteor showers. Historical developments A meteor shower in August 1583 was recorded in the Timbuktu manuscripts.Abraham, Curtis"Stars of the Sahara" ''New Scientist'', issue 2617,15 August 2007, page 39–41 In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X-ray Fluorescence
X-ray fluorescence (XRF) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by being bombarded with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and analytical chemistry, chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science, archaeology and art objects such as paintings. Underlying physics When materials are exposed to short-wavelength X-rays or to gamma rays, ionization of their component atoms may take place. Ionization consists of the ejection of one or more electrons from the atom, and may occur if the atom is exposed to radiation with an energy greater than its ionization energy. X-rays and gamma rays can be energetic enough to expel tightly held electrons from the inner atomic orbital, orbitals of the atom. The removal of an electron in this way makes the electronic structu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tutankhamun's Iron Dagger Blade
Tutankhamun's meteoric iron dagger, also known as Tutankhamun's iron dagger and King Tut's dagger, is an iron-bladed dagger from the tomb of the ancient Egyptian Pharaoh Tutankhamun (reigned c. 1334–1325 BC). As the blade composition and homogeneity closely correlate with meteorite composition and homogeneity, the material for the blade is determined to have originated by way of a meteoritic landing. The dagger is currently displayed at the Egyptian Museum in Cairo. Analysis Since the 1960s, the high nickel content in the blade has been accepted as indicative of meteoric origin. A more recent study published in June 2016 derived from x-ray fluorescence spectrometer analysis show that the blade's composition is mostly iron (Fe) and 11% nickel (Ni) and 0.6% cobalt (Co). This means its composition is placed within the median of a group of 76 previously discovered iron meteorites. The nickel content in the bulk metal of most iron meteorites ranges from 5% to 35%, whereas it nev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Iron Production
Archaeometallurgical slag is slag discovered and studied in the context of archaeology. Slag, the byproduct of iron-working processes such as smelting or smithing, is left at the iron-working site rather than being moved away with the product. As it weathers well, it is readily available for study. The size, shape, chemical composition and microstructure of slag are determined by features of the iron-working processes used at the time of its formation. Overview The ores used in ancient smelting processes were rarely pure metal compounds. Impurities were removed from the ore through the process of slagging, which involves adding heat and chemicals. Slag is the material in which the impurities from ores (known as gangue), as well as furnace lining and charcoal ash, collect. The study of slag can reveal information about the smelting process used at the time of its formation.Bachmann H. G.''The Identification of slags from archaeological sites'' Institute of Archaeology, London, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tutankhamun's Mummy
Tutankhamun's mummy was discovered by English Egyptologist Howard Carter and his team on October 28, 1925 in tomb KV62 of Egypt's Valley of the Kings. Tutankhamun was the 13th pharaoh of the 18th Dynasty of the New Kingdom of Egypt, making his mummy over 3,300 years old. Tutankhamun's mummy is the only royal mummy to have been found entirely undisturbed. The burial chamber was found in 1922, but was not opened until a year later. Two years passed between the discovery of the tomb and that of the mummy and its famous death mask. The discovery of the tomb as a whole was one of the most significant and famous archeological discoveries in modern times. There has been much speculation about the king's life and cause of death since very little information about him is known. King Tutankhamun Tutankhamun was the 13th pharaoh of the 18th Dynasty of the New Kingdom; however, the exact dates of his reign are not clear. An educated estimate is that he ruled over Ancient Egypt from abou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceremonial Weapon
A ceremonial weapon is an object used for ceremonial purposes to display power or authority. They are often used in parades and as part of dress uniforms. Although they are descended from weapons used in actual combat, they are not normally used as such. Their form and, especially, their finishing and decoration are typically designed to show status and power and to be an impressive sight, rather than for practicality as a weapon. Quite often, ceremonial weapons are constructed with precious metals or other materials that make them too delicate for combat use. With ceremonial swords, an example of this is that the sword may be poorly balanced. Historically, however, many ceremonial weapons were also capable of actual combat, most notably in the military. Maces, halberds, daggers and swords are the most common form of ceremonial weapons, but in theory almost any weapon can become ceremonial. The Sergeant at Arms in some parliaments carries a ceremonial mace. The Swiss Guard in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pre-dynastic Egypt
Prehistoric Egypt and Predynastic Egypt span the period from the earliest human settlement to the beginning of the Early Dynastic Period around 3100 BC, starting with the first Pharaoh Pharaoh (, ; Egyptian: '' pr ꜥꜣ''; cop, , Pǝrro; Biblical Hebrew: ''Parʿō'') is the vernacular term often used by modern authors for the kings of ancient Egypt who ruled as monarchs from the First Dynasty (c. 3150 BC) until th ..., Narmer for some Egyptologists, Hor-Aha for others, with the name Menes also possibly used for one of these kings. At the end of prehistory, "Predynastic Egypt" is traditionally defined as the period from the final part of the Neolithic period beginning c. 6000 BC to the end of the Naqada III period c. 3000 BC. The dates of the Predynastic period were first defined before widespread archaeological excavation of Egypt took place, and recent finds indicating very gradual Predynastic development have led to controversy over when exactly the Predynasti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knossos
Knossos (also Cnossos, both pronounced ; grc, Κνωσός, Knōsós, ; Linear B: ''Ko-no-so'') is the largest Bronze Age archaeological site on Crete and has been called Europe's oldest city. Settled as early as the Neolithic period, the name Knossos survives from ancient Greek references to the major city of Crete. The palace of Knossos eventually became the ceremonial and political centre of the Minoan civilization and culture. The palace was abandoned at some unknown time at the end of the Late Bronze Age, c. 1380–1100 BC; the reason is unknown, but one of the many disasters that befell the palace is generally put forward. In the First Palace Period (around 2000 BC), the urban area reached a size of as many as 18,000 people. Spelling The name Knossos was formerly latinization of names, Latinized as Cnossus or Cnossos and occasionally Knossus, Gnossus, or Gnossos but is now almost always written Knossos. Neolithic period The site of Knossos has had a very long history ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Minoan III
The Minoan civilization was a Bronze Age Aegean civilization on the island of Crete and other Aegean Islands, whose earliest beginnings were from 3500BC, with the complex urban civilization beginning around 2000BC, and then declining from 1450BC until it ended around 1100BC, during the early Greek Dark Ages, part of a wider bronze age collapse around the Mediterranean. It represents the first advanced civilization in Europe, leaving behind a number of massive building complexes, sophisticated art, and writing systems. Its economy benefited from a network of trade around much of the Mediterranean. The civilization was rediscovered at the beginning of the 20th century through the work of British archaeologist Sir Arthur Evans. The name "Minoan" derives from the mythical King Minos and was coined by Evans, who identified the site at Knossos with the labyrinth of the Minotaur. The Minoan civilization has been described as the earliest of its kind in Europe, and historian Will Duran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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