Abrasive (Invention)
Invention of Abrasive Abrasives as a class are simply hard substances used to rub-nard material to form softer substances. I…
Invention of Abrasive Abrasives as a class are simply hard substances used to rub-nard material to form softer substances. I…
Discovery of ABO Blood Groups The Austrian - born American Biologist Karl Landsteiner in 1901 was the first to classify hum…
Invention of Abacus A calculating device consisting of balls strung on wires or rods set in a frame. It is probably of Babyl…
Discovery of Abaca It is a plant grown in Borneo, Philippines and Sumatra for its fibre. The plant grows about 6 metres high…