Search results
Results from the WOW.Com Content Network
The process, called "normalize and temper", is used frequently on steels such as 1045 carbon steel, or most other steels containing 0.35 to 0.55% carbon. These steels are usually tempered after normalizing, to increase the toughness and relieve internal stresses. This can make the metal more suitable for its intended use and easier to machine. [9]
Derveni krater, bronze, 350 BC, height: 90.5 cm (35 1 ⁄ 2 in.), Inv. B1, Archaeological Museum of Thessaloniki, after cleaning and conservation. Conservation and restoration of metals is the activity devoted to the protection and preservation of historical (religious, artistic, technical and ethnographic) and archaeological objects made partly or entirely of metal.
Birmingham Museum of Art. Joseph Meder, [ 8 ] Alphonse Legros , the Pre-Raphaelites and Joseph Stella helped revitalize the technique. Art historian Meder created interest in the traditional technique in Austria and Germany, while artist and teacher Legros did likewise in England.
In the early twentieth century the first laboratories focusing on applying scientific techniques on artworks were established around the world. In 1888, the Rathgen-Forschungslabor was founded in Berlin as the first museum laboratory in the world, and in 1928, Edward Forbes established the first conservation research centre in the United States at the Fogg Art Museum at Harvard University (now ...
The origin of the name "Damascus Steel" is contentious. Islamic scholars al-Kindi (full name Abu Ya'qub ibn Ishaq al-Kindi, circa 800 CE – 873 CE) and al-Biruni (full name Abu al-Rayhan Muhammad ibn Ahmad al-Biruni, circa 973 CE – 1048 CE) both wrote about swords and steel made for swords, based on their surface appearance, geographical location of production or forging, or the name of the ...
By the Late Middle Ages even infantry could afford to wear several pieces of plate armour. Armour production was a profitable and pervasive industry during the Middle Ages and the Renaissance. [18] Royal Armoury of Madrid, Spain. A complete suit of plate armour made from well-tempered steel would weigh around 15–25 kg (33–55 lb). [19]
Entrance to the Science Museum of Virginia. A science museum is a museum devoted primarily to science.Older science museums tended to concentrate on static displays of objects related to natural history, paleontology, geology, industry and industrial machinery, etc. Modern trends in museology have broadened the range of subject matter and introduced many interactive exhibits.
The history of metallurgy in the Indian subcontinent began prior to the 3rd millennium BCE. [1] Metals and related concepts were mentioned in various early Vedic age texts. The Rigveda already uses the Sanskrit term ayas (Sanskrit: अयस्, romanized: áyas, lit. 'metal; copper; iron'). [2]