Bubble Wrap (brand) Bubble Wrap (brand) Bubble Wrap (originally Air Cap) is a trademarked brand of Sealed Air Corporation that includes numerous cushioning products made from bubble wrap. The brand is produced by the Product Care division of Sealed Air. Both the Bubble Wrap brand and product were introduced in 1960, with the launch of Sealed Air. Although the brand was originally used for the packaging of IBM computers, Sealed Air now does most of its Bubble Wrap business in the food packaging industry. Bubble wrap was invented in 1957 by engineers Alfred Fielding and Marc Chavannes in Hawthorne, New Jersey. Fielding and
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