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Natural Science Forum / Physics / General Physics / July 2008



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Time Dilation

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kronecker@yahoo.co.uk - 12 Jul 2008 21:13 GMT
Now make the assumption that we cannot travel faster than light but
that we may someday be able to travel at maybe 90% the speed of light.
The time-dilation then takes effect.
Does this not mean that future astronaughts may be on a one-way trip
into the future and never see their families again? Also, it could
mean one could indefinately go forward in time. Just return home and
set-out again faster still with newer technology having made a pact
with future generations.You need only gain 50 years per trip - it
would soon mount up.

K.
Androcles - 12 Jul 2008 21:18 GMT
| Now make the assumption that we cannot travel faster than light

Why make a stupid assumption like that?
Mitch Raemsch - 12 Jul 2008 21:56 GMT
> <kronec...@yahoo.co.uk> wrote in message
>
> news:a0f91ee1-bd75-4a11-87f3-9fbddab580ac@z66g2000hsc.googlegroups.com...
> | Now make the assumption that we cannot travel faster than light
>
> Why make a stupid assumption like that?

Acceleration decelerates time.

Mitch Raemsch
Spaceman - 13 Jul 2008 03:30 GMT
>> <kronec...@yahoo.co.uk> wrote in message
>>
[quoted text clipped - 4 lines]
>
> Acceleration decelerates time.

Nope.
It goofs up the clock and actions-reactions
and anyone that uses science finds out
how much it goofed up by and knows why
after they actually look for the "physical" cause
of the frequency change.
:)

Signature

James M Driscoll Jr
Spaceman

Spaceman - 13 Jul 2008 03:29 GMT
>> Now make the assumption that we cannot travel faster than light
>
> Why make a stupid assumption like that?

Oh, ya Thanks for reminding him of that silly so far imaginary
only wall.
Can't believe I let that slip by.
:)

Signature

James M Driscoll Jr
Spaceman

Sue... - 12 Jul 2008 22:14 GMT
On Jul 12, 4:13 pm, kronec...@yahoo.co.uk wrote:
> Now make the assumption that we cannot travel faster than light but
> that we may someday be able to travel at maybe 90% the speed of light.
[quoted text clipped - 7 lines]
>
> K.

Before you swallow the whole hook line and sinker you might
ask the source of such notions to explain how inertial
motion affects the invariant mass or torque of this simple
mechanism:

"Torsion Pendulum"
http://farside.ph.utexas.edu/teaching/em/lectures/node108.html

See also:
"The relativity principle"
http://farside.ph.utexas.edu/teaching/em/lectures/node108.html

Sue...
Sue... - 12 Jul 2008 22:18 GMT
On Jul 12, 4:13 pm, kronec...@yahoo.co.uk wrote:
> Now make the assumption that we cannot travel faster than light but
> that we may someday be able to travel at maybe 90% the speed of light.
[quoted text clipped - 7 lines]
>
> K.

Before you swallow the whole hook line and sinker you might
ask the source of such notions to explain how inertial
motion affects the invariant mass or torque of this simple
mechanism:

"Torsion Pendulum" [URL corrected]
http://farside.ph.utexas.edu/teaching/301/lectures/node139.html

See also:
"The relativity principle"
http://farside.ph.utexas.edu/teaching/em/lectures/node108.html

Sue...
PD - 13 Jul 2008 14:01 GMT
> On Jul 12, 4:13 pm, kronec...@yahoo.co.uk wrote:
>
[quoted text clipped - 21 lines]
>
> Sue...

Only "Sue" would dance along a jargon string, led by web search
strings:
special relativity --> inertial frames --> inertia --> moment of
inertia --> torsion pendulums. And then imagine that special
relativity is about torsion pendulums.

Of course, if he had followed only two more degrees of separation, he
would have found that special relativity is also about Kevin Bacon.

PD
Sue... - 13 Jul 2008 22:28 GMT
> > On Jul 12, 4:13 pm, kronec...@yahoo.co.uk wrote:
>
[quoted text clipped - 16 lines]
>
> > "Torsion Pendulum" [URL corrected]

http://farside.ph.utexas.edu/teaching/301/lectures/node139.html

> > See also:
> > "The relativity principle"

http://farside.ph.utexas.edu/teaching/em/lectures/node108.html

> > Sue...
>
[quoted text clipped - 3 lines]
> inertia --> torsion pendulums. And then imagine that special
> relativity is about torsion pendulums.

<< The key to understanding special relativity is
Einstein's relativity principle, which states that

   All inertial frames are totally equivalent for the
performance of all physical experiments.

In other words, it is impossible to perform a physical
experiment which differentiates in any fundamental
sense between different inertial frames. By definition,
Newton's laws of motion take the same form in
all inertial frames. Einstein generalized this result in
his special theory of relativity by asserting that all laws
of physics take the same form in all inertial frames.>>
http://farside.ph.utexas.edu/teaching/jk1/lectures/node7.html

So you too, are invited to help some of your fellow
"advocates of nonsense"  explain how Hooke's
law is modified by inertial morion.

Sue...
PD - 13 Jul 2008 23:07 GMT
> > > On Jul 12, 4:13 pm, kronec...@yahoo.co.uk wrote:
>
[quoted text clipped - 49 lines]
> "advocates of nonsense"  explain how Hooke's
> law is modified by inertial morion.

I'm sorry... Hooke's "law" is not really a law of physics, any more
than Ohm's "law" is. It is a description that holds in a broad class
of cases, just like Ohm's law does, but it is really no more than
keeping the first-order term in a Taylor expansion about *any*
potential about a local minimum.

I realize, "Sue", that it must be horribly frustrating to get so
confused about terminology in physics, especially when the yield in
internet search engines generates such a cacophony that is hard for
you to parse.

This is why it is actually more useful to learn physics in a
structured environment, so that when you crank your handlebars hard to
the left and end up in shoulder-high weeds, you will have someone that
will call you back to a more level surface.

PD
Sue... - 13 Jul 2008 23:33 GMT
> > > > On Jul 12, 4:13 pm, kronec...@yahoo.co.uk wrote:
>
[quoted text clipped - 45 lines]
> > his special theory of relativity by asserting that all laws
> > of physics take the same form in all inertial frames.>>

http://farside.ph.utexas.edu/teaching/jk1/lectures/node7.html

> > So you too, are invited to help some of your fellow
> > "advocates of nonsense"  explain how Hooke's
[quoted text clipped - 5 lines]
> keeping the first-order term in a Taylor expansion about *any*
> potential about a local minimum.

Then the impedance of free-space isn't really  377 ohm?

I think you are saying inertial motion revokes Hooke's law.

While that certainly   unique among your fellows advocates
I think you will find your logic refuted where
the product of eps and mu are factors in the constancy
of light speed.
http://farside.ph.utexas.edu/teaching/em/lectures/node108.htm

Sue...

> PD
PD - 13 Jul 2008 23:55 GMT
> > > > > On Jul 12, 4:13 pm, kronec...@yahoo.co.uk wrote:
>
[quoted text clipped - 59 lines]
>
> Then the impedance of free-space isn't really  377 ohm?

No, I'm not saying that, and that doesn't have anything to do with
Ohm's law.
Here again your internet search keyword free association game lead you
down into little rabbit warrens in the weeds and you have no idea how
you got there.
First it was special relativity -> inertial reference frame -> inertia
-> moment of inertia -> torsion pendulum
Now it's Ohm's law -> resistance -> impedance -> impedance of vacuum -
> Maxwell's equations -> law of physics.
As I said, if you try harder, you'll be able to associate special
relativity with Kevin Bacon, as that's only six degrees of separation,
a well-known law of physics.

> I think you are saying inertial motion revokes Hooke's law.

No I'm not saying that at all. Your ability to comprehend anything
other than free association of internet search terms is a bit on
the ... unaccomplished end of the scale.

> While that certainly   unique among your fellows advocates
> I think you will find your logic refuted where
[quoted text clipped - 4 lines]
>
> > PD
Sue... - 14 Jul 2008 00:14 GMT
> > Then the impedance of free-space isn't really  377 ohm?
>
[quoted text clipped - 3 lines]
> down into little rabbit warrens in the weeds and you have no idea how
> you got there.

> First it was special relativity -> inertial reference frame -> inertia
> -> moment of inertia -> torsion pendulum
> Now it's Ohm's law -> resistance -> impedance -> impedance of vacuum -> Maxwell's equations -> law of physics.

NNTP-Posting-Host: 70.250.155.250
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22:55:54 GMT)
X-Complaints-To: groups-abuse@google.com
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> As I said, if you try harder, you'll be able to associate special
> relativity with Kevin Bacon, as that's only six degrees of separation,
[quoted text clipped - 14 lines]
>
> > > PD
PD - 14 Jul 2008 00:35 GMT
> > > Then the impedance of free-space isn't really  377 ohm?
>
[quoted text clipped - 23 lines]
>         AppleWebKit/525.13 (KHTML, like Gecko) Version/3.1 Safari/
> 525.13,gzip(gfe),gzip(gfe)

I'm not surprised you would have a stiff reaction to someone seeing
right through what you do, especially since you work so hard to dress
it up in camos and throw distracting chaff liberally. This would be
another lovely example.

PD

> > As I said, if you try harder, you'll be able to associate special
> > relativity with Kevin Bacon, as that's only six degrees of separation,
[quoted text clipped - 14 lines]
>
> > > > PD
Eric Gisse - 14 Jul 2008 02:27 GMT
[...]

Yikes - that got a reaction! Direct hit with that salvo, it appears.

That's the thing an actual education provides - a way to filter out
the endless stream of babbling bullshit that you get when parsing
search engine output. If I didn't know how to interpret what Google
tells me, there'd be _NO_ way for me to do the varying things I work
with.

Right now I'm trying to build a cluster on pre-existing workstations
using virtualization technology. Fat f.ck chance I could do that
without Google.
kronecker@yahoo.co.uk - 14 Jul 2008 21:59 GMT
> [...]
>
[quoted text clipped - 9 lines]
> using virtualization technology. Fat f.ck chance I could do that
> without Google.

Believe it or not people did research and development work with great
competence long before the internet existed.

K.
Sue... - 14 Jul 2008 22:46 GMT
On Jul 14, 4:59 pm, kronec...@yahoo.co.uk wrote:

> > [...]
>
[quoted text clipped - 12 lines]
> Believe it or not people did research and development work with great
> competence long before the internet existed.

Whether you use it or not, it is a REAL bad idea to indicate you
have access to someone else's search strings which may
be stored by Google. (unless you are the government of China)

http://searchengineland.com/070314-180307.php

Sue...

> K.
BURT - 14 Jul 2008 23:17 GMT
> On Jul 14, 4:59 pm, kronec...@yahoo.co.uk wrote:
>
[quoted text clipped - 28 lines]
>
> - Show quoted text -

Acceleration decelerates the clock of matter.

Mitch Raemsch
G=EMC^2 Glazier - 17 Jul 2008 14:32 GMT
Sue  time dilation exists even at very slow speeds.  It came out of SR
It tell us that time slows down for an observer that is in motion.
Bert
Sam Wormley - 17 Jul 2008 18:00 GMT
> Sue  time dilation exists even at very slow speeds.  It came out of SR
> It tell us that time slows down for an observer that is in motion.
> Bert

  Relative motion, Herb, relative motion with that which is being
  observed.
G=EMC^2 Glazier - 18 Jul 2008 18:05 GMT
Sam  I said it right even if you do not like it.  Go figure  Bert
Uncle Al - 13 Jul 2008 01:40 GMT
> Now make the assumption that we cannot travel faster than light

Bullshit.  A body with rest mass cannot travel *at* lightspeed.
Faster or slower is 100% OK, as with positive and negative temps
kelvin vs. unattainable absolute zero.  Going to negative temps kelvin
is trivially easy:  MRI, NMR, EPR, adiabatic demagnetization of
paramagnetic salts, lasing media.

The interested reader is invited to reduce to practice violation of
lightspeed by a like mechanism.

> but
> that we may someday be able to travel at maybe 90% the speed of light.

Google
"Oh My God Particle"

at Fourmilab.  If you cannot do math, do not boast empirical
conclusions.

> The time-dilation then takes effect.
> Does this not mean that future astronaughts may be on a one-way trip
[quoted text clipped - 3 lines]
> with future generations.You need only gain 50 years per trip - it
> would soon mount up.

Come back when your turds extrude as parallelepipeds.

Signature

Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2

BURT - 13 Jul 2008 01:57 GMT
> kronec...@yahoo.co.uk wrote:
>
[quoted text clipped - 31 lines]
> Uncle Alhttp://www.mazepath.com/uncleal/
>  (Toxic URL! Unsafe for children and most mammals)http://www.mazepath.com/uncleal/lajos.htm#a2

Light has Gamma One. None of its energy is kinetic. Light is massive
by its energy.

Mitch Raemsch
kronecker@yahoo.co.uk - 13 Jul 2008 04:59 GMT
> kronec...@yahoo.co.uk wrote:
>
[quoted text clipped - 31 lines]
> Uncle Alhttp://www.mazepath.com/uncleal/
>  (Toxic URL! Unsafe for children and most mammals)http://www.mazepath.com/uncleal/lajos.htm#a2

If you could travel faster than light then you would get there before
you left!

K.
Spaceman - 13 Jul 2008 05:15 GMT
> If you could travel faster than light then you would get there before
> you left!

No you would not.
When you see a planet that is 100 light years away.
Even if you instantly go there (note the term instantly)
You would get there 100 light years after what you saw.
and if you spent 2 second there and instantly popped
back here only 2 seconds would have gone by.
:)
The same is true about taking any speed.
If you passed by this planet as 50 lightyears a second
(that is one sick a.s speed above light)
you would still take 2 seconds to get there
and of course it would be 100 yrs and 2 seconds
after what you saw happen there just before you left
here.

You really should get that "time changing rate" crap
out of your head.
:)

If you are using any other math than what would happen
above.
You have lost basic math.
If you think such basic math is wrong because
basic math proves such about time slowing down,
you have proved your "proof" is invalid since it also
uses basic math that you just proved wrong.
Time does nto slow rate.
Clocks malfuntion.
The Entire Universe Agrees with me.
If you wish to argue about such, go yell at the Sun
and Moon.
:)

Signature

James M Driscoll Jr
Spaceman

kronecker@yahoo.co.uk - 13 Jul 2008 10:32 GMT
On Jul 13, 4:15 pm, "Spaceman" <space...@yourclockmalfunctioned.duh>
wrote:
> kronec...@yahoo.co.uk wrote:
> > If you could travel faster than light then you would get there before
[quoted text clipped - 36 lines]
> James M Driscoll Jr
> Spaceman

NASA proved a long  time back that the "time-changing crap" is in fact
right. I am sure you know the experiment.

The thing that intrigues me however is not that Einstein was wrong per-
se but that that c may not be universally constant. It may vary in
differnt parts of the universe and that messes things up a bit. How
can we prove otherwise, that c is a universal constant is conjecture
only.

K.
Spaceman - 13 Jul 2008 21:51 GMT
> On Jul 13, 4:15 pm, "Spaceman" <space...@yourclockmalfunctioned.duh>
> wrote:
[quoted text clipped - 41 lines]
> NASA proved a long  time back that the "time-changing crap" is in fact
> right. I am sure you know the experiment.

NASA proved the clock changing does occur,
NASA ignores the clock changes that occur on the planets
so they can study them when our clock says they will be there.
And guess what.. that means the clocks DID malfunction.
Maybe you should learn more about what NASA does to see
planets and actually land on them using our timing system,
not the dang planets timing system that simple messes up
our clocks if the clock was on it.
Sheesh!

> The thing that intrigues me however is not that Einstein was wrong
> per- se but that that c may not be universally constant. It may vary
> in differnt parts of the universe and that messes things up a bit. How
> can we prove otherwise, that c is a universal constant is conjecture
> only.

A speed can not be constant for all.
And clocks malfunction, they do not change any "time" in the universe
at all.

Signature

James M Driscoll Jr
Spaceman

Spaceman - 13 Jul 2008 03:28 GMT
> Now make the assumption that we cannot travel faster than light but
> that we may someday be able to travel at maybe 90% the speed of light.
> The time-dilation then takes effect.
> Does this not mean that future astronaughts may be on a one-way trip
> into the future and never see their families again?

If you passed Earth at 90% the speed of light and traveled for
5 yrs in a giant circle that came back to Earth in that time
It would only be 5 yrs for everyone on Earth also.
Your clock might not say such, but that is simply a problem
with the clock, not a problem with the Universe.
Because you see, no matter what your clock said.
The Universe would show you it is wrong and that silly
thing that made us call a day as one day (The Earth)
and the amount of trips it took around the Sun would still
do so just about the same speed it did for the whole time you
were gone.
:)
time dilation = clock malfunction (or action-reaction changes from
accelerated motion and such g-force changes)
Time does not change rate in science.

Signature

James M Driscoll Jr
Spaceman

PD - 13 Jul 2008 13:58 GMT
On Jul 12, 3:13 pm, kronec...@yahoo.co.uk wrote:
> Now make the assumption that we cannot travel faster than light but
> that we may someday be able to travel at maybe 90% the speed of light.
> The time-dilation then takes effect.
> Does this not mean that future astronaughts may be on a one-way trip
> into the future and never see their families again?

Yes.

> Also, it could
> mean one could indefinately go forward in time.

Yes.

> Just return home and
> set-out again faster still with newer technology having made a pact
> with future generations.You need only gain 50 years per trip - it
> would soon mount up.
>
> K.
 
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