Bubble Wrap (brand) Chavannes sealed two shower curtains together, creating a smattering of air bubbles, which they originally tried to sell as wallpaper. When the product turned out to be unsuccessful as wallpaper, the team marketed it as greenhouse insulation. Although Bubble Wrap was branded by Sealed Air Corporation (founded by Fielding and Chavannes) in 1960, it was not until a year later that its use in protective usage was discovered. As a packaging material, Bubble Wrap's first client was IBM, which used the product to protect the IBM 1401 computer during shipment. Fielding and Chavannes were inducted into the New Jersey Inventors
Greek letters used in mathematics, science, and engineering and u. Sometimes font variants of Greek letters are used as distinct symbols in mathematics, in particular for ε/ϵ and π/ϖ. The archaic letter digamma (Ϝ/ϝ/ϛ) is sometimes used. The Bayer designation naming scheme for stars typically uses the first Greek letter, α, for the brightest star in each constellation, and runs through the alphabet before switching to Latin letters. In mathematical finance, the Greeks are the variables denoted by Greek letters used to describe the risk of certain investments. The Greek letter forms used in mathematics are often different from those used in Greek-language text: they are designed to