A clock second is not a universal interval of time.
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From: Inertial on 7 Oct 2009 09:10 <kenseto(a)erinet.com> wrote in message news:893458a8-b057-49d6-a6d1-7f488b9d65a6(a)b18g2000vbl.googlegroups.com... > On Oct 7, 7:52 am, "Y.Porat" <y.y.po...(a)gmail.com> wrote: >> On Oct 6, 7:11 pm, kenseto <kens...(a)erinet.com> wrote:> A clock second is >> not a universal interval of time. >> > What does this mean? >> >> ------------------- >> it means that there is not at all >> a universal interval of time !! > > No....it means that a clock second does not measure the same interval > of universal time in different frames. What universal time? Does any clock measure universal time? How could you tell if it did? How can it be called a universal time if it doesn't correspond to what we measure time to be?
From: kenseto on 7 Oct 2009 09:12 On Oct 6, 7:04 pm, "Inertial" <relativ...(a)rest.com> wrote: > "kenseto" <kens...(a)erinet.com> wrote in message > > news:6b160fe1-4d0b-44d6-9e3c-938b151b03e7(a)p9g2000vbl.googlegroups.com... > > > A clock second is not a universal interval of time. > > What does this mean? > > You wouldn't know. You are an runt of the SRians.
From: kenseto on 7 Oct 2009 09:15 On Oct 6, 5:37 pm, Sam Wormley <sworml...(a)mchsi.com> wrote: > kens...(a)erinet.com wrote: > > On Oct 6, 3:01 pm, Sam Wormley <sworml...(a)mchsi.com> wrote: > >> kenseto wrote: > >>> A clock second is not a universal interval of time. > >> A clock second is an invention of humans. > > >> An example of universal constant, on the other hand, is > >> the speed of light/gravity which is totally independent > >> of humans. > > > Hey idiot what is the time interval you use to measure the speed of > > light????? If you say a clock second is a human invention does that > > mean that a clock second use to define light speed is also a human > > invention???? > > You got yer cart before yer chicken, Seto. The propagation of > light existed long long before humings came up with some way to > measure it. > > This in important, Seto, so pay attention! Light is used as > a standard to DEFINE both units of distance and units of time. > So join the 20th and 21st centuries, Seto! Wormy using the speed of light to define units of distance and time is circular. > > > > > > > Ken Seto > > >> Furthermore, Einstein showed in 1905 that neither time > >> nor distance is absolute or fixed. Foe experimental con- > >> firmation, see: > > >> What is the experimental basis of Special Relativity? > >> http://math.ucr.edu/home/baez/physics/Relativity/SR/experiments.html- Hide quoted text - > > - Show quoted text -
From: kenseto on 7 Oct 2009 10:35 On Oct 7, 9:10 am, "Inertial" <relativ...(a)rest.com> wrote: > <kens...(a)erinet.com> wrote in message > > news:893458a8-b057-49d6-a6d1-7f488b9d65a6(a)b18g2000vbl.googlegroups.com... > > > On Oct 7, 7:52 am, "Y.Porat" <y.y.po...(a)gmail.com> wrote: > >> On Oct 6, 7:11 pm, kenseto <kens...(a)erinet.com> wrote:> A clock second is > >> not a universal interval of time. > >> > What does this mean? > > >> ------------------- > >> it means that there is not at all > >> a universal interval of time !! > > > No....it means that a clock second does not measure the same interval > > of universal time in different frames. > > What universal time? Does any clock measure universal time? How could you > tell if it did? How can it be called a universal time if it doesn't > correspond to what we measure time to be? Universal time (or absolute time) is the only time that exists. A clock second will contain a specific interval of universal time (absolute time) in A's frame and a clock second will cntain a different interval of universal time in B's frame. That's why clocks in different frame run at different rates. This is illustrated clearly by the GPS ststem...a GPS second had to redfined to have 4.15 more periods of the Cs 133 radiation than a ground clock second. The purpose of this redefinition is to make the GPS second contain the same anount of absolute time (universal time) as the ground clock second. Ken Seto
From: Sam Wormley on 7 Oct 2009 12:23
kenseto(a)erinet.com wrote: > On Oct 6, 5:37 pm, Sam Wormley <sworml...(a)mchsi.com> wrote: >> You got yer cart before yer chicken, Seto. The propagation of >> light existed long long before humings came up with some way to >> measure it. >> >> This in important, Seto, so pay attention! Light is used as >> a standard to DEFINE both units of distance and units of time. >> So join the 20th and 21st centuries, Seto! > > > Wormy using the speed of light to define units of distance and time is > circular. That's you opinion (and incorrect at that), Seto. Ref: http://physics.nist.gov/cuu/Units/current.html Unit of time - second "The second is the duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom". Seto--This definition has nothing to so with length! Unit of length - meter "The meter is the length of the path travelled by light in vacuum during a time interval of 1/299792458 of a second". So, Seto, as you can see, the definition of length uses the definition of a second, but the definition of a second DOES NOT USE the definition of length. |