 On October 14, 1947, just under a month after the United States Air Force had been created as a separate service, tests culminated in the first manned supersonic flight where the sound barrier was broken, piloted by Air Force Captain Chuck Yeager in the Bell X-1.1947 Acrylic paint

Acrylic paint is fast-drying paint containing pigment suspended in an acrylic polymer emulsion.The first acrylic paint was invented by Leonard Bocour and Sam Golden in 1947 under the brand Magna paint.