Talk:Proper length

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I don't think proper distance is the same as proper length

[edit] spacelike?

... spacelike events in a frame of reference in which the events are simultaneous.

Doesn't it mean timelike? If I remember correctly, spacelike events can be in the same spot, but not at the same time. Timelike events, however, can be at the same time, but not in the same place.

You don't remember correctly. Timelike events can be related through time. So they can be at the same place but not at the same time. Similartly spacelike events can be related only through space. --EMS | Talk 20:17, 3 July 2007 (UTC)