when did the first fidget spinners come out
Fidget spinner Catherine Hettinger, a chemical engineer by training, was initially credited by some news stories to have been the inventor of the fidget spinner, including by media outlets such as The Guardian,[9] The New York Times,[10] and the New York Post.[11] Hettinger filed a patent application for a "spinning toy"[12] in 1993 and a patent was issued, but Hettinger allowed the patent to lapse in 2005 after she could not find a commercial partner.[9][8] A May 2017 Bloomberg News article showed that Hettinger was not the inventor of the fidget spinner, and Hettinger agreed.[8]
Helicopter The earliest references for vertical flight came from China. Since around 400 BC,[8] Chinese children have played with bamboo flying toys (or Chinese top).[9][10][11] This bamboo-copter is spun by rolling a stick attached to a rotor. The spinning creates lift, and the toy flies when released.[8] The 4th-century AD Daoist book Baopuzi by Ge Hong (抱朴子 "Master who Embraces Simplicity") reportedly describes some of the ideas inherent to rotary wing aircraft.[12]