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
To show that soil contains air:- Place some soil in a glass jar or bottle and slowly pour water over it. Observe the air bubbles that increase by the water from the soil.

discuss the special conflict that erikson believed marked young adulthood. Then describe how an individual could best resolve this conflict

Define Colorimetric Method for the Estimation of Phosphorous Estimation of phosphorous is based upon the principle of colorimetry. Many methods for quantitative analysis are ba

Vitamin E  (Tocopherols) Vitamin E is an essential fat-soluble vitamin that functions, at  least in part, as a lipid- soluble antioxidant. Presence of vitamin E was first revea

which instrument measure the air pressure

Explain the Functions of the liver Secretion of bile: The liver cells are able to synthesize bile. All constituents of bile are not present in the liver. Liver cells use differ

Question 1 Outline the risks of nuclear fissions Question 2 Comment on semiconductor devices and their usage Question 3 In a total system approach, what are the various



The Maximum theoretical limit of channel is governed by Nyquist theorem, which says Bth = 2 x freq in hertz x log2L ( where L = number of level) Thus we have in this case Bth= 2x60