Why We'll Never Build a Perfect Clock
2021年2月4日—Imagineatotallyperfectclock.Itmeasuresthetimeintheplacewhereitissituated.Itsownpropertime.Butduetogeneralrelativitythe ...,2018年10月26日—Fromsundialstoatomicclocks,westilldon'thaveaperfecttimemeasuringdevice.,Imagineaclockthatticksw...。參考影片的文章的如下: