| : tau0 is referring to the "measured lifetime at rest",
|
| And the muon in the experiment is in fact moving.
Too bad, the experiment disagrees with Einstein's SR.
Fuck off, you can't understand plain English or read algebra.
The meaning of the word stationary varies with the object under
discussion. Stationary means that something is not moving, but it does
not by itself mean anything when you don't know the object to which it
is being applied to. The English word stationary means nothing
without specifying the object that isn't moving.
Einstein went to a lot of trouble in his 1905 article to specify
the meaning of stationary frame. If you look at how he defines the
stationary frame, you will see that it includes measuring instruments
(clocks and rulers) that are at rest in this frame. There is nothing
in his definition that specifies that a muon, pion or human body has
to be stationary in this frame. In the context of the 1905 article, a
stationary frame is a coordinate system with a set of measuring
instruments that aren't moving.
No dictionary defines stationary as referring specifically to
muons or any object in the system that is being examined. Einstein did
not define the word stationary to refer to muons or any part of the
system being examined. He used it to refer only to a set of measuring
instruments used to examine the system. The word stationary, in
Einstein's article, does not refer to the object being examined.
Your "plain English" is gibberish to other people. You
arbitrarily choose the object that you want to be stationary. Einstein
defines both stationary and rest in plain English.
When physicists say "rest lifetime of a muon," they mean the
lifetime as measured by clocks that are moving with the exact same
velocity as the muon. A stationary frame is merely a coordinate system
with a set of clocks at each node that aren't moving. The muon doesn't
have to be at rest in the stationary system.