Chemistry in golden era, Science

Chemistry in golden era:

Chemistry In the field  of metallurgy  too  we notice some remarkable developmenk. Before the close of the sixteenth century, zinc was isolated by a process known neither to the Arab civilisation nor to the Europeans who learnt the art in  the early nineteenth century.  It has now been suggested by archaeological excavations at Zawar  in Rajasthan  that  Indians knew how  to isolate zinc by about the first century after Christ.  In China, zinc was isolated only during the ninth century.  

The isolation of zinc was accompanied by another achievemenf namely the manufacture of brass, an alloy of copper and zinc. Abu'l Fazl gave three proportions of  zinc and copper for obtaining brass of different varieties. Tin-coating of copper and brass learnt from the Arab world became prevalent in medieval India, thereby enabling copper vessels to be more widely used. Soldering, particularly of gold on agates, crystals and other brittle materials, was done so efficiently,  as to earn commendation from European  travellers. India seems to have discovered the freezing mixture before Europe. Saltpetre (potassium nitrate) was used  for cooling water before 1580. This discovery has been attributed to Emperor Akbar.  

118_chemistery in golden era.png

Posted Date: 9/27/2012 8:28:30 AM | Location : United States







Related Discussions:- Chemistry in golden era, Assignment Help, Ask Question on Chemistry in golden era, Get Answer, Expert's Help, Chemistry in golden era Discussions

Write discussion on Chemistry in golden era
Your posts are moderated
Related Questions
Explain the Process of Hearing The ears, as we all know, are sense organs for hearing. The ear consists of an external ear, a middle ear and an internal ear. It houses receptor

what are the condition necessary for heat transfer to occur?

Explain in detail about the Sedimentary rocks  Sedimentary rocks are formed from the breakdown of  igneous rocks.  These rocks are broken apart by plant roots, ice wedges, and

Explain the Chronic Glomerulonephritis The repeated occurrence of acute glomerulonephritis, persisting proteinuria, hypertension and chronic renal failure may damage more and m

What are the functions of insulin? 1. Promotes glucose transport into all cells of the body except brain. Rapid transport of glucose into the cells decreases the blood glucose


What are the Effects of Temperature variations Different minerals present in the rock behave differently to the changing temperatures. The rocks expand on getting heated at day

An x-ray diffractometer recorder chart for an element that has either the BCC or the FCC crystal structure shows diffraction peaks at the following 2θ angles: 40 0 , 58 0 , 73 0 ,

Soil Textural Classes On the basis of the proportion of different soil separates present, the soils are classified into different groups called as  soil classes. The soil class

Oxidoreductases To this group (EC  1) beIongs all enzymes catalyzing oxidation-reduction reactions. Common  names  include dehydrogenases, oxidazes,  reductases  and  catalases.