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The second is the si base unit of time commonly understood and historically defined as 1 86400 of a day this factor derived from the division of the day first into 24 hours then to 60 minutes and finally to 60 seconds each another intuitive understanding is that it is about the time between beats of a human heart mechanical and electric clocks and.
The point is if you the science fiction writer postulate lots of technological advances in your novels you must at least pay lip service to the sad fact that it will make a sizable segment of your society very angry.
What is phet founded in 2002 by nobel laureate carl wieman the phet interactive simulations project at the university of colorado boulder creates free interactive math and science simulations.