Science and technology of the Tang dynasty
The inventor Ding Huan (fl. 180 AD) of the Han dynasty invented a rotary fan for air conditioning, with seven wheels 3 m (10 ft) in diameter and manually powered. In 747, Emperor Xuanzong had a "Cool Hall" built in the imperial palace, which the "Tang Yulin" (唐語林) describes as having water-powered fan wheels for air conditioning as well as rising jet streams of water from fountains. During the subsequent Song dynasty, written sources mentioned the air conditioning rotary fan as even more widely used.
Bubble Wrap (brand)
Bubble wrap was invented in 1957 by engineers Alfred Fielding and Marc Chavannes in Hawthorne, New Jersey. Fielding and 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 Hall of Fame in 1993. Sealed Air celebrated Bubble Wrap's 50th birthday in January 2010.