The period of a pendulum clock is proportional to the square root of the length of the pendulum arm. The length of the pendulum arm will expand and contract with air temperature and alter the period accordingly.
Does this mean that air temperature _really_ dilates _time_? I would say it means that air temperature really dilates the period of pendulum clocks which have been designed and built without due regard for the affects of temperature. Harry Stephen A. Lawrence wrote: > > > >> Horace Heffner wrote: > >>> I don't think it is generally accepted an more that >>> m=m0*gamma is a real effect. I definitely read that in some text. > > I've also read that "m0*gamma" isn't "real" mass. I've also read that > time dilation is not "real". Both statements, as written, are > nonsensicle -- they are both meaningless. > > To make them sensible statements you first must define "real". > > Can you do that? > > If you can, then you'll also be able to say definitively whether either > of those effects is "real". > > But if you can't define "real" then any question about whether something > is "real" is meaningless. >
