Search results
Results from the WOW.Com Content Network
Iron is the outlier at 1538 °C (2800 °F), [21] making it far more difficult to melt in antiquity. Cultures developed ironworking proficiency at different rates; however, evidence from the Near East suggests that smelting was possible but impractical circa 1500 BC, and relatively commonplace across most of Eurasia by 500 BC. [ 22 ]
Yellin Studio in 1915. Samuel Yellin was born to a Jewish family in Mohyliv-Podilskyi, Ukraine in the Russian Empire in 1884. At the age of eleven, he was apprenticed to a master ironsmith.
In China, blast furnaces produced cast iron, which was then either converted into finished implements in a cupola furnace, or turned into wrought iron in a fining hearth. [34] If iron ores are heated with carbon to 1420–1470 K, a molten liquid is formed, an alloy of about 96.5% iron and 3.5% carbon.
Griswold "slant logo" cast-iron skillet, manufactured approximately 1915 Griswold "small logo" cast-iron skillet, manufactured between 1940 and 1957. Griswold cast-iron pots and pans, skillets, dutch ovens, and other kitchen items had a reputation for high quality, and they are well known to antique collectors and sellers. The easily recognized ...
Steel is an alloy composed of between 0.2 and 2.0 percent carbon, with the balance being iron. From prehistory through the creation of the blast furnace, iron was produced from iron ore as wrought iron, 99.82–100 percent Fe, and the process of making steel involved adding carbon to iron, usually in a serendipitous manner, in the forge, or via the cementation process.
What isn't mentioned in the referenced book is the particular year in which the term "ambrotype" was first used. Ambrotypes were much less expensive to produce than daguerreotypes , the medium that predominated when they were introduced, and did not have the bright mirror-like metallic surface that could make daguerreotypes troublesome to view ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
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]