time measured by a clock that has the same motion as the observer. Any clock in motion relative to the observer, or in a different gravitational field, will not, according to the theory of relativity, measure proper time
THE SEPTEMBER WORD OF THE DAY QUIZ HAS ARRIVED!
Go ahead, test your mental legerity to see how many words you remember from last month!
Question 1 of 10
Which definition best describes “spang”?
Words nearby proper time
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012