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TIL bladeless fans work by squeezing air & accelerating it. Air is forced out through slits, & clings to the curved aerofoil surfaces. This means surrounding air pulled along, too. The air flow becomes about 15 times greater than the air taken in.

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y97p TIL singer-songwriter Jim Croce financed his first album in 1966 with a $500 wedding gift from his parents, who hoped that he would give up music after the album failed. He died in a plane crash in 1973, 5 albums and 11 singles later.
oBGo8 TIL the character Totoro from Hayao Miyasaki's 1988 film My Neighbour Totoro, makes a cameo appearance in the 2010 Pixar film Toy Story 3. Daisuke Tsutsumi, the art director of Toy Story 3, is married to Miyazaki's niece, who was the original inspiration for the character Mei in My Neighbour Totoro.
oBN67 TIL the origin of the phrase “hold a candle to”. When a craftsman and their apprentice would work in the dark, and the apprentice would hold a candle so the master could see. Telling someone they can’t even hold a candle for you, let alone do the complicated job you’re doing, is insulting.
yV0oX TIL that the Bee Gees replaced the last chorus of "Islands In The Stream" with the lyrics of Ghetto Supastar, in their greatest hits version
nObY TIL that Lactase Persistence, the ability of humans to digest milk as an adult, is only common among Europeans and those of European ancestry, as a unique mutation. Most of the global population, including 90% of Asians and 100% of Native Americans, have some degree of lactose intolerance.