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An elastomer is a polymeric substance obtained after vulcanization of rubber. Vulcanization is the process of improving the properties of rubber by heating with sulphur. A normal rubber is not useable as it becomes brittle at low temperature and sticky at high temperature. Charles Goodyear had been trying to 'cure' the rubber so that it could be used in all seasons. He tried to mix all kinds of things such as ink, black pepper, cheese and what not. But he couldn't succeed until he dropped a piece of rubber on stove accidentally.
To his surprise, he found that instead of melting the rubber piece hardened and remained pliable. It was found in the lab that it contained traces of sulphur. Goodyear perfected the process and named it 'vulcanization' after the Roman God of fire, 'Vulcan'.
At a large port facility near New York City tractor-trailer trucks are lined-up in long queues as their drivers wait to have their containers inspected and documents processed. As
name of types of piles?
Define Circular Channels Flowing Partially Full Two sets of curved lines on the Circular Channel Ratios figure (discharge Q/Q full and velocity v/v full ). 1. "n" variabl
batching by volume
Question It should be necessary that raking piles of a bridge abutment be placed under an embankment ? Answer For a bridge abutment to be supported on raking piles with div
(a) Explain the 'Soil Texture' and 'Soil structure'. What are the various terms used to explain the above properties of the soil? (b) A clay sample having natural moisture conte
plz tell me the ratio of sand,aggregate,and asphalt.pl tell me the mm of aggregate
interplanar spacing
#Determine the smallest value of P and corresponding angle to the inclined plane which is inclined by 30 degree to horizontal to just start the block moving up the inclined plane.
about lenses & mirrors for assignment
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