Physicists have finally watched positronium, a short‑lived atom made of an electron and its antimatter twin, behave like a rippling quantum wave instead of a tiny billiard ball. In a set of ...

Q: What are diffraction gratings? A diffraction grating is an optical component for spectroscopy that splits light into different wavelengths. A typical diffraction grating has thousands of grooves ...

An experiment measuring a single atom's recoil confirmed that observing a particle destroys interference, settling the ...

We want to hear from men over the age of 30 who feel as if they have not yet had a meaningful romantic relationship for a New York Times Magazine feature. By Charley Locke Charley Locke is a ...

When last we saw [xoreaxeax], he had built a lens-less optical microscope that deduced the structure of a sample by recording the diffraction patterns formed by shining a laser beam through it. At the ...