Hello dbmorpher here, I was looking at some articles on entropy and wondered, could this be used to calculate time? Entropy is known as the arrow of time, figurative I know but could actually be used to measure. If there was a device that calculated the entropy in a set system couldn't it automatically calculate it and give a numerical value? This would need a set system for all clocks but would render any other non- atomic clocks obsolete because it is based on measurements and calculations instead of gears and circuitry. I would like to know if what I said in that last sentence could happen and if I could make one myself. I found this http://www.eoht.info/page/Entropy+clock But I do not understand it very well.