carborundum उदाहरण वाक्य

"' Carborundum printmaking "'is a collagraph printmaking technique in which the image is created by adding light passages to a dark field.
Carborundum was originally used by printmakers to grind down lithography stones and is now used in collagraph prints to create gradients of tone and a sandy texture.
Through his carborundum print Life ( Fig . 3 ), he depicts a neatly dressed black girl reading what appears to be a newspaper or magazine.
An extremely hard compound of silicon and carbon, carborundum was first produced artificially by Edward Goodrich Acheson in 1890 during his attempts to produce artificial diamonds.
His patent drawings show many possible configurations for the detector, most were versions of detectors already in use, substituting carborundum for one of the components.

He began work as an engineer in 1958, first at General Motors as a maintenance engineer, then at The Carborundum Company as a supervising sales engineer.
Saint-Gobain is expected soon to complete its acquisition of most of British Petroleum Plc's $ 340 million Carborundum business, which will enhance its ceramics operations
It may be that he named the material " carborundum " by analogy to corundum, which is another very hard substance ( 9 on the Mohs scale ).
Carborundum printmaking uses a carbon-based abrasive to burnish copper plates creating an image that can produce a print in tones ranging from pale gray to deep black.
Acheson also developed the electric batch furnace by which SiC is still made today and formed the Carborundum Company to manufacture bulk SiC, initially for use as an abrasive.