super glue was discovered by accident during development research on what
Harry Coover In 1942, while searching for materials to make clear plastic gun sights, Coover and his team at Eastman Kodak examined cyanoacrylates, a material that was used during both World Wars (1914-1918; 1939-1945) as an alternative to stitches on large cuts and wounds,[citation needed] rejecting them as too sticky. Nine years later, Coover was overseeing Kodak chemists investigating heat-resistant polymers for jet canopies when cyanoacrylates were once again tested and proved too sticky. That time around, however, Coover recognized that he had discovered a unique adhesive. In 1958, the adhesive, marketed by Kodak as Super Glue, was introduced for sale.[4]
Chemical bond Early speculations about the nature of the chemical bond, from as early as the 12th century, supposed that certain types of chemical species were joined by a type of chemical affinity. In 1704, Sir Isaac Newton famously outlined his atomic bonding theory, in "Query 31" of his Opticks, whereby atoms attach to each other by some "force". Specifically, after acknowledging the various popular theories in vogue at the time, of how atoms were reasoned to attach to each other, i.e. "hooked atoms", "glued together by rest", or "stuck together by conspiring motions", Newton states that he would rather infer from their cohesion, that "particles attract one another by some force, which in immediate contact is exceedingly strong, at small distances performs the chemical operations, and reaches not far from the particles with any sensible effect."