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 ...

Physicists believe these messy conditions continued all the way down to a scale of 10 -33 cm and time intervals of 10 -43 seconds, called the Planck size and time. The Planck scale, whether referring ...