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 ...

Planck's constant is one of the most important numbers in all of physics. It is, essentially, the ultimate guide to the quantum world. It tells us where quantum effects are important, the fundamental ...

The highest energy conceivable for an elementary particle is the so-called Planck energy. With this energy, quantum mechanics changes the nature of gravity and gravitational interaction is as strong ...

How hot can the Universe truly get? Enter the Planck Temperature,a mind-blowing 1.416784 × 10³² Kelvin. This is not just another extreme number; it's the theoretical maximum temperature the Universe ...

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 ...

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 ...