10. Wireless Transmissions

Last but really not the least is Hedy Lamarr who invented a classified communications system during the World War 2. Basically, it’s wi-fi. Yes, Hedy Lamarr invented wi-fi (also the bluetooth technology).

Not cool enough for ya? She’s mostly a self-taught inventor with no real formal training! Oh, and she’s also a well-known actress that has starred in about 30 films aside from all the inventing she did. Wow.