Iron is a lustrous, magnetic, bendable, shiny white metallic element. Iron comes from the Latin word ferrum. From ferrum its symbol became Fe. The atomic number of iron is 26, and its atomic weight is 55.845. Iron is a transition metal and is also an essential and non-toxic element. However, since iron is a trace element, it can be toxic if not taken in very small doses. The date of discovery is known to the ancient civilizations. The discoverer of iron is unknown.
Iron is the fourth most abundant element in the Earth's crust. It is the second most abundant metal after aluminum. It comprises nearly 5.6% of the Earth's crust. Because it is so common, iron has been used by human society for thousands of years. Iron was known and used for weapons in prehistoric ages, the earliest example still in existence; a group of rusty iron beads found in Egypt, dates from about 4000BC. This period in history was given the name Iron Age because it was the time when people found ways to get iron and to use it for building tools and weapons. .
Iron is the most useful of all metals. It is also the cheapest available metal. Most is used to manufacture steel. Ordinary carbon steel is an alloy of iron with carbon (about 1.5%), with small amounts of other elements. Alloy steels are carbon steels with other additives such as nickel and chromium.
The types of iron can be classified as (1) pig iron, (2) cast iron, or (3) wrought iron. Pig iron is produced in furnace blast. Cast iron is any iron alloy that contains from 2 to 4 percent carbon and wrought iron is mixed with a glasslike material. .
The related elements to iron consist of Ruthenium (Ru), Osmium (Os), and Hassium (Hs). .
Iron is an essential part of a healthy diet. Iron compounds are employed for medicinal purposes in the treatment of anemia, when the amount of hemoglobin or the number of red blood corpuscles in the blood is lowered. Iron is a component of the complex compound in red blood cells called hemoglobin.
Iron was mentioned in many instances in Beloved. ... For example Sethe was described as having an iron will. ... Iron also portrayed a strong will of a person(s). Sethe had been described as having an iron will. ... Iron can also portray a false sense of security. ...
An analysis of Hugo Young's book The Iron Lady: A Biography of Margaret Thatcher would include how he uses a critical tone that eases into a conversational tone as he talks about Thatcher's family and past. ... The author gives this biography a metaphorical title, "The Iron Lady."" "Iron"" was used as an adjective in the title because it is describing Thatcher as strong, sturdy and robust, which are qualities that she possessed as a leader. ...
The large subunit consists of a bimetallic center― nickel-iron cluster. ... Crystal structure of nickel-iron center isolated from D. gigas. ... During the catalytic process, the oxidation state of iron does not change. ... Second, cysteinethiol dissociates with Ni and binds only with iron. Also, cyanide on iron binds with the nickel. ...
Shaw developed the first practical iron lung in 1928 at the Harvard School of Public Health in Boston, Massachusetts. ... The iron lung works to prevent suffocation. ... In Black's book, she includes many examples of those who suffered from polio and had survived as a result of the iron lung. ... The iron respirators revolutionized the treatment of the most serious forms of polio. ... The iron lung is today recognized at an icon of the polio years. ...
The iron-containing compounds in the body are grouped into functional iron, in which iron serves a metabolic or enzymatic function, and storage iron, in which iron is transported or stored. ... Dietary iron consists primarily of either nonheme iron and heme iron, and these are absorbed by different mechanisms. ... The absorption of nonheme iron depends on how the entire meal affects iron solubility. ... The majority of iron deficiency is the direct result of low dietary iron content, especially of bioavailable iron. ... Meat is a good source of iron because most iron is in the form of heme iro...
Stone was used in the Old and New Stone age, bronze in the Bronze Age, and iron in ! the Iron Age. ... The Iron Age came into being with the use of iron in tool and weapon making. ... The Iron Age consists of stages; beginning with the Early Iron Age starting 1500/1200 BC, where Greek art was very dominate. ... The fall of Rome in 500 AD marked the end of the Early Iron Age and the beginning of the Middle Iron Age. ...
A meteor made of iron (91% iron, 8.5% Nickel and 0.6 Cobalt) can hold its shape easier than one created by stone (36% Oxygen, 26% Iron, 18%Silicon, 14%Magnesium, 1.5% Aluminum, 1.4 Nickel and 1.3% Calcium). Iron would eventually crumble due to the atmosphere becoming less dense five to seven miles above the ground. ...
Iron [26Fe], a metal in the first transition series, is one of the most ubiquitous and abundant elements existing in the inner and outer core of the Earth. Iron has sixteen oxides and hydroxides; two stable oxidation states in an aqueous solution of ferrous, Fe(II), and the ferric, Fe(III)[1]. Iron oxides are widespread in nature; they are also conveniently synthesized in the laboratory. ... Ferritins, uniformly nano sized protein cages, existed naturally, have an iron-storage function in a non-toxic and bioavailable form, and are where the reaction between iron and oxygen occurred. ... Wh...
Weber spoke of the "iron cage" in which workers creative powers and imagination were crushed by the regulations of a powerful bureaucracy. ... There is a direct parallel between Weber's "iron cage" theory and the implementation of wide-scale surveillance at the work place. ...
