Popular Science

who works as a postdoctoral researcher at the University of California at Irvine’s Math Department.

the name for the change in sound as waves from the source move closer or farther away from you, elongating as they move away and shortening as they come closer. Visible light, as seen in the colors of the rainbow, exhibits similar properties, with longer wavelengths appearing as a red shift and shorter wavelengths as a blue shift.

Einstein’s declaration of wave-particle duality earned him the Nobel Prize in physics in 1921.