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 1857, Joseph Gayetty of New York invented Gayettyâs Medicated Paper for the Water-Closet. It contained aloe and Gayetty marketed it as a means to cure sores and prevent the hemorrhoids that came from wiping with inked and chemically altered paper. It sold in packages of five hundred, flat, un-perforated sheets for fifty cents. [5] However, Gayetty never patented his product.