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.
In 1900, an advertisement shows that B.T. Hoogland's Sons of New York were distributing the watermarked Papel Medicado De Gayetty and giving credit to the invention of the paper in 1857 by Joseph C. Gayetty, Inventor. Nearly the same advertisement was run in English in 1907. The product continued to be marketed until the 1920s.