A social media post this week made thousands of people pick up the nearest ruler and look at it, really look at it, for what ...

A seemingly simple ruler hides a clever design: the gap before the zero mark. This isn't an oversight but a deliberate ...

Researchers have developed a 'quantum ruler' to measure and explore the strange properties of multilayered sheets of graphene, a form of carbon. The work may also lead to a new, miniaturized standard ...