Carotenoids. Carotenoids are very long-chain water-repelling pigments that are synthesized in the plastids of plant cells. In the sunflower, a common carotenoid, ss-Ã, carotene is produced in the chromoplasts of the ray flowers to produce bright-yellow orange. colorsarotenoids. Carotenoids are very long-chain water-repelling pigments that are synthesized in the plastids of plant cells. In the sunflower, a common carotenoid, ss-Ã, carotene is produced in the chromoplasts of the ray flowers to produce bright-yellow orange. colors
Bette Nesmith Graham. Liquid Paper Inventor. As electric typewriters came into widespread use after World War II, Bette Nesmith Graham and countless other secretaries let out a collective groan. The new machines did make typing easier, but their carbon-film ribbons made it impossible to correct mistakes neatly with a pencil eraser.
The first truly synthetic plastic was invented by Leo Baekeland â a Belgium chemist living in New York. Baekeland was already very rich as he had invented the first commercially successful photographic paper and sold it to George Eastman in 1898 for $1 million.lastic as a whole was very important in World War Two. âPlane cockpits were made of Perspex, polythene was used in insulate radar and plastic was used to make synthetic rubber for tyres.