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Arnold, David (2004), The New Cambridge History of India: Science, Technology and Medicine in Colonial India, Cambridge University Press, ISBN 0-521-56319-4. Balasubramaniam, R. (2002), Delhi Iron Pillar: New Insights, Indian Institute of Advanced Studies, ISBN 81-7305-223-9. Bouri, Nisha.
This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.
Other metal objects made by Indian artisans include lamps. [33] Copper was also a component in the razors for the tonsure ceremony. [15] One of the most important sources of history in the Indian subcontinent are the royal records of grants engraved on copper-plate grants (tamra-shasan or tamra-patra). Because copper does not rust or decay ...
Ferroboron (CAS Registry Number 11108–67-1) is a ferroalloy of iron and boron with boron content between 17.5 and 20%.[1]It is manufactured either by carbothermic reduction of boric acid in an electric arc furnace together with carbon steel, or by the aluminothermic reduction of boric acid in the presence of iron.
As of 2012, India is the largest producer of sheet mica, 2015 the fourth largest producer of iron ore, alumina, chromite, and bauxite in the world. A coal and iron ore project is in the fifth largest reserve in world. India's metal and mining industry was estimated to be $106.4 billion in 2010. [2] Mining in India has been prominent since ...
Soluble boron arranges in steels along grain boundaries. This inhibits the γ-α transformations (austenite to ferrite transformation) by diffusion and therefore increases the hardenability, with an optimal range of ~ 0.0003 to 0.003% B. [1] Additionally Fe 2 B has been found to precipitate at grain boundaries, which may also retard the γ-α transformations . [1]
The Rewari metal craft industry is about 450 years old, with origins around the Mughal period. This place was known to have a nursery of soldiers since Vedic times, which still exists till date. This place was known to have a nursery of soldiers since Vedic times, which still exists till date.
The cash coupons of Indian Princely States that were printed on paper were issued to counteract the shortage of metal during World War II. The Prisoner of War coupons used as money by the interned prisoners of the Anglo-Boer War of 1899-1902, World War II, and the Indo-Pakistani War of 1971 are also illustrated.