PhysicsTiniest 'ruler' ever measures distances as small as an atom's width A new technique uses glowing molecules, laser light and microscopes to measure distances as minuscule as 0.1 nanometres – the width of a typical atom ¿ìè¶ÌÊÓÆµ
PhysicsThis test could reveal whether gravity is subject to quantum weirdness If gravity is a truly quantum entity, something as simple as measuring the strength of an object’s gravitational field should change its quantum state ¿ìè¶ÌÊÓÆµ