Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
replied:
David Rutherford wrote:
In response to a question asking if it's a fair statement that I expect
a line drawn from E1 to E2 to "coincide" in different frames, I
coincide
No, I don't expect the line to coincide in different reference
frames. In the case I gave, the lines don't coincide in F and
F', but the point I'm trying to make is that they don't
spacetime,in spacetime, either. When I say they don't coincide in
spacetime, I mean, they don't coincide independently and apart
from either reference frame.
If E1 is a an event in spacetime, and E2 is a separate event in
how is there more than one unique "line" connecting them? F and F' mayhave
different descriptions for that line, but there's nothing to "coincideof
independently" since there's only one line being referred to.
You certainly wouldn't ask if E1 "coincides independently" in F and F'
because it's only one event. Likewise for E2. Why then ask that question
the line from E1 to E2?