… in time than the original wavelength’s duration: leveraging the quantum property of superposition. If you take multiple different waves, with different wavelengths, you can superimpose them atop one another to create pulses of either long or short duration that are “peaked” at a specific, controllable frequency. This type of pulsing enables a great many types of science, from “beat frequencies” with sound waves to the ultra-fast lasers that are used to probe the fundamental quantum properties of matter.