SARS-CoV-2 is sometimes referred to as "the invisible enemy" - but human have known well how to reveal such small enemies for decades: quantum mechanics. The scanning electron microscope uses the wave nature of matter to make images of near-atomic-scale phenomena. Credit: NIAID. https://twitter.com/drsekula/status/1250208070917120006/photo/1 https://chirp.cooleysekula.net/attachment/64576