Search results
Results from the WOW.Com Content Network
The cyanotype was discovered, [2] and named thus, by Sir John Herschel who in 1842 published his investigation of light on iron compounds, [3] expecting that photochemical reactions would reveal, in form visible to the human eye, the infrared extreme of the electromagnetic spectrum detected by his father William Herschel and the ultra-violet or 'actinic' rays that had been discovered in 1801 ...
Iron. Iron is a chemical element; it has the symbol Fe (from Latin ferrum 'iron') and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's outer and inner core.
Pages in category "Iron sculptures". The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes .
Iron in folklore. A horseshoe wind chime, used as a good luck charm. Iron has a long and varied tradition in the mythology and folklore of the world. While iron is now the name of a chemical element, the traditional meaning of the word "iron" is what is now called wrought iron. In East Asia, cast iron was also common after 500 BCE, and was ...
Iron meteorites, also called siderites or ferrous meteorites, are a type of meteorite that consist overwhelmingly of an iron–nickel alloy known as meteoric iron that usually consists of two mineral phases: kamacite and taenite. Most iron meteorites originate from cores of planetesimals, [3] with the exception of the IIE iron meteorite group.
Lunch atop a Skyscraper. Lunch atop a Skyscraper is a black-and-white photograph taken on September 20, 1932, of eleven ironworkers sitting on a steel beam of the RCA Building, 850 feet (260 meters) above the ground during the construction of Rockefeller Center in Manhattan, New York City. It was a staged photograph arranged as a publicity ...
Ferrous metallurgy is the metallurgy of iron and its alloys. The earliest surviving prehistoric iron artifacts, from the 4th millennium BC in Egypt, [1] were made from meteoritic iron-nickel. [2] It is not known when or where the smelting of iron from ores began, but by the end of the 2nd millennium BC iron was being produced from iron ores in ...
The iron compounds produced on the largest scale in industry are iron (II) sulfate (FeSO 4 ·7 H 2 O) and iron (III) chloride (FeCl 3). The former is one of the most readily available sources of iron (II), but is less stable to aerial oxidation than Mohr's salt ((NH4)2Fe (SO4)2·6H2O).