NIST's June Lau, in collaboration with Brookhaven National Lab and Euclid TechLabs, have invented a new type of electron microscope that gives us a freeze-frame look at the smallest parts of our world. To do this, they shoot microwaves at an arbitrary frequency through a waveguide, so that only electrons catching onto their desired wave can get through the microscope. By controlling the waves, you control the timeframe. It’s a whole new level of photography, capturing atomic-scale still images mid-motion.