Consider the space time diagram below, which shows events A and B and the world lines of clocks that one might use to measure the time between those events.
The clock(s) following which world line(s) measure(s)
(a) the space time interval between events A and B?
(b) a proper time between events A and B?
(c) a coordinate time between events A and B?
(d) the shortest time interval between events A and B?
(e) the longest time interval between events A and B?
(a) the space time interval between events A and B? - B
(b) a proper time between events A and B? - E
(c) a coordinate time between events A and B? - F
(d) the shortest time interval between events A and B? - E
(e) the longest time interval between events A and B? - A
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