The smallest time interval ever defined. Named after theoretical physicist Max Planck (1858-1947), Planck time is 10-43 seconds; however, the only measurement ever actually made was more than twice as ...

The Planck scale, whether referring to size, time, mass, or otherwise, is the smallest unit of the universe we can describe — or, perhaps, that even exists. Below these scales, our current theories ...

Planck's constant reveals the quantum world's fundamental energy levels. It shows how light and matter exist in discrete units (quanta). This constant defines limits to our knowledge of particle ...

I’d like to invite you to an even higher level of nerdom! Every good nerd knows that E=mc^2. Every great nerd knows that, really, E^2=m^2c^4+p^2c^2 Want to know what that even means? Sure, I’ll tell ...

The smallest conceivable length of time might be no larger than a millionth of a billionth of a billionth of a billionth of a second. That's according to a new theory describing the implications of ...