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 ...

and the energy needed to probe that size is the Planck energy-2 billion Joules. Sounds tricky, but it's not the first time two excellent theories conflicted. I hope you still remember that ...

Before that threshold (specifically, before the end of the first Planck time after the Big Bang began), it's tough to make any informed conclusions because we have no way of testing anything at all.

Quantum uncertainty Max Planck is widely credited for being the first person to realize that the energy of a body is “quantized”, but history shows that this is probably not what he had in mind at the ...