One
could also say that the compass represents another reference

no, one can not. one can ONLY state which direction magnetic North is and
which direction relative to that the boat is pointed, but *no* deduction can be
made as to which direction actually is actually going. none.



but that would be
too complex for jaxie.

wasn't too complex for Einstein when he wrote his PhD thesis on the subject.
you can read that thesis, if you want, by looking up The Special Theory of
Relativity.

"JAXAshby" wrote in message
...
One
could also say that the compass represents another reference

no, one can not. one can ONLY state which direction magnetic North is and
which direction relative to that the boat is pointed, but *no* deduction can
be
made as to which direction actually is actually going. none.

I never claimed you had absolute certainty with infinite precision about the
direction of travel. You're the one claiming that's the only definition of DR.
In fact, formally speaking, the DR plot by itself makes no such presumption; it
only describes the position based on the ship's heading and speed through the
water. If you had any understanding of DR you would know this. Once again, you
just prove you don't know what DR is.





but that would be
too complex for jaxie.

wasn't too complex for Einstein when he wrote his PhD thesis on the subject.
you can read that thesis, if you want, by looking up The Special Theory of
Relativity.

Einstein's PhD thesis was not special relativity, it was "A New Determination of
Molecular Dimensions." And Special Relativity did not focus on the relative
motion issues that are significant for ship's navigation. That was fully
addressed by Galileo in his "Theory or Relativity" 300 years earlier. Einstein
only mentioned it by way of recapitulating traditional physics before showing
how Special Relativity is different. It looks like this is yet another topic
where you can show your ignorance.

jeffies, DR is just guessing, and the degree of uncertainty can not be
determined. That is physically impossible.

remember, jeffies, when you claimed to have a degree in physics from some
junior college? Well, if you had that associates degree in physics you might
have heard of the PhD thesis written a hundred some years ago by a young man by
the Al Einstein.

One
could also say that the compass represents another reference

no, one can not. one can ONLY state which direction magnetic North is and
which direction relative to that the boat is pointed, but *no* deduction
can
be
made as to which direction actually is actually going. none.

I never claimed you had absolute certainty with infinite precision about the
direction of travel. You're the one claiming that's the only definition of
DR.
In fact, formally speaking, the DR plot by itself makes no such presumption;
it
only describes the position based on the ship's heading and speed through the
water. If you had any understanding of DR you would know this. Once again,
you
just prove you don't know what DR is.





but that would be
too complex for jaxie.

wasn't too complex for Einstein when he wrote his PhD thesis on the
subject.
you can read that thesis, if you want, by looking up The Special Theory of
Relativity.

Einstein's PhD thesis was not special relativity, it was "A New Determination
of
Molecular Dimensions." And Special Relativity did not focus on the relative
motion issues that are significant for ship's navigation. That was fully
addressed by Galileo in his "Theory or Relativity" 300 years earlier.
Einstein
only mentioned it by way of recapitulating traditional physics before showing
how Special Relativity is different. It looks like this is yet another topic
where you can show your ignorance.

"JAXAshby" wrote in message
...
jeffies, DR is just guessing, and the degree of uncertainty can not be
determined. That is physically impossible.

And why is this "qualitatively different" from any other method of navigation?


remember, jeffies, when you claimed to have a degree in physics from some
junior college? Well, if you had that associates degree in physics you might
have heard of the PhD thesis written a hundred some years ago by a young man
by
the Al Einstein.

Please, can you explain how "On a new determination of molecular dimensions"
relates to this problem? You don't even know what Bert's thesis actually was!




One
could also say that the compass represents another reference

no, one can not. one can ONLY state which direction magnetic North is and
which direction relative to that the boat is pointed, but *no* deduction
can
be
made as to which direction actually is actually going. none.

I never claimed you had absolute certainty with infinite precision about the
direction of travel. You're the one claiming that's the only definition of
DR.
In fact, formally speaking, the DR plot by itself makes no such presumption;
it
only describes the position based on the ship's heading and speed through the
water. If you had any understanding of DR you would know this. Once again,
you
just prove you don't know what DR is.





but that would be
too complex for jaxie.

wasn't too complex for Einstein when he wrote his PhD thesis on the
subject.
you can read that thesis, if you want, by looking up The Special Theory of
Relativity.

Einstein's PhD thesis was not special relativity, it was "A New Determination
of
Molecular Dimensions." And Special Relativity did not focus on the relative
motion issues that are significant for ship's navigation. That was fully
addressed by Galileo in his "Theory or Relativity" 300 years earlier.
Einstein
only mentioned it by way of recapitulating traditional physics before showing
how Special Relativity is different. It looks like this is yet another topic
where you can show your ignorance.

well, jeffies, *if* you can see Lighthouse White Diamond and you can see
Daymarker Eel and you can measure the angle between relative to your boat THEN
you know where you are IF you have a chart that accurately portrays where both
are.

jeffies, that be different from wondering around in the fog looking for rocks
to hit.

jeffies, DR is just guessing, and the degree of uncertainty can not be
determined. That is physically impossible.

And why is this "qualitatively different" from any other method of
navigation?


remember, jeffies, when you claimed to have a degree in physics from some
junior college? Well, if you had that associates degree in physics you
might
have heard of the PhD thesis written a hundred some years ago by a young
man
by
the Al Einstein.

Please, can you explain how "On a new determination of molecular dimensions"
relates to this problem? You don't even know what Bert's thesis actually
was!




One
could also say that the compass represents another reference

no, one can not. one can ONLY state which direction magnetic North is
and
which direction relative to that the boat is pointed, but *no* deduction
can
be
made as to which direction actually is actually going. none.

I never claimed you had absolute certainty with infinite precision about
the
direction of travel. You're the one claiming that's the only definition
of
DR.
In fact, formally speaking, the DR plot by itself makes no such
presumption;
it
only describes the position based on the ship's heading and speed through
the
water. If you had any understanding of DR you would know this. Once
again,
you
just prove you don't know what DR is.





but that would be
too complex for jaxie.

wasn't too complex for Einstein when he wrote his PhD thesis on the
subject.
you can read that thesis, if you want, by looking up The Special Theory
of
Relativity.

Einstein's PhD thesis was not special relativity, it was "A New
Determination
of
Molecular Dimensions." And Special Relativity did not focus on the
relative
motion issues that are significant for ship's navigation. That was fully
addressed by Galileo in his "Theory or Relativity" 300 years earlier.
Einstein
only mentioned it by way of recapitulating traditional physics before
showing
how Special Relativity is different. It looks like this is yet another
topic
where you can show your ignorance.

Really? You're claiming the angle between two objects gives you a fix?
Interesting ... is that the way it works for airplanes?



"JAXAshby" wrote in message
...
well, jeffies, *if* you can see Lighthouse White Diamond and you can see
Daymarker Eel and you can measure the angle between relative to your boat THEN
you know where you are IF you have a chart that accurately portrays where both
are.

jeffies, that be different from wondering around in the fog looking for rocks
to hit.

jeffies, DR is just guessing, and the degree of uncertainty can not be
determined. That is physically impossible.

And why is this "qualitatively different" from any other method of
navigation?


remember, jeffies, when you claimed to have a degree in physics from some
junior college? Well, if you had that associates degree in physics you
might
have heard of the PhD thesis written a hundred some years ago by a young
man
by
the Al Einstein.

Please, can you explain how "On a new determination of molecular dimensions"
relates to this problem? You don't even know what Bert's thesis actually
was!




One
could also say that the compass represents another reference

no, one can not. one can ONLY state which direction magnetic North is
and
which direction relative to that the boat is pointed, but *no* deduction
can
be
made as to which direction actually is actually going. none.

I never claimed you had absolute certainty with infinite precision about
the
direction of travel. You're the one claiming that's the only definition
of
DR.
In fact, formally speaking, the DR plot by itself makes no such
presumption;
it
only describes the position based on the ship's heading and speed through
the
water. If you had any understanding of DR you would know this. Once
again,
you
just prove you don't know what DR is.





but that would be
too complex for jaxie.

wasn't too complex for Einstein when he wrote his PhD thesis on the
subject.
you can read that thesis, if you want, by looking up The Special Theory
of
Relativity.

Einstein's PhD thesis was not special relativity, it was "A New
Determination
of
Molecular Dimensions." And Special Relativity did not focus on the
relative
motion issues that are significant for ship's navigation. That was fully
addressed by Galileo in his "Theory or Relativity" 300 years earlier.
Einstein
only mentioned it by way of recapitulating traditional physics before
showing
how Special Relativity is different. It looks like this is yet another
topic
where you can show your ignorance.

JAXAshby wrote:
jeffies, DR is just guessing, and the degree of uncertainty can not be
determined. That is physically impossible.

remember, jeffies, when you claimed to have a degree in physics from some
junior college? Well, if you had that associates degree in physics you might
have heard of the PhD thesis written a hundred some years ago by a young man by
the Al Einstein.


UHOH, look out!!!! Jax is gettin serious now, he's pulling out his big
guns, ole Albie Einstein !!!!

sailor Al knew a thing or two about both sailing and relative motion. he is
considered worth listening to by five generations of physicists now.

jeffies, DR is just guessing, and the degree of uncertainty can not be
determined. That is physically impossible.

remember, jeffies, when you claimed to have a degree in physics from some
junior college? Well, if you had that associates degree in physics you
might
have heard of the PhD thesis written a hundred some years ago by a young
man by
the Al Einstein.


UHOH, look out!!!! Jax is gettin serious now, he's pulling out his big
guns, ole Albie Einstein !!!!

"JAXAshby" wrote in message
...
sailor Al knew a thing or two about both sailing and relative motion. he is
considered worth listening to by five generations of physicists now.


Yes, but that was not what his thesis was about, nor was it important to Special
Relativity. And it wasn't anything new, since it was fully developed by Galileo
in his ""Theory of Relativity" 300 years earlier. The fact that you keep
invoking Einstein's name in this just shows you have no understanding of his
work.

-jeff "I like sailing because it is the sport which demands the least energy”
Albert Einstein

Physicists, yes. Don't know too many navigators that listen to him on
navigation..... not enough practical experience.

JAXAshby wrote:
sailor Al knew a thing or two about both sailing and relative motion. he is
considered worth listening to by five generations of physicists now.


jeffies, DR is just guessing, and the degree of uncertainty can not be
determined. That is physically impossible.

remember, jeffies, when you claimed to have a degree in physics from some
junior college? Well, if you had that associates degree in physics you

might

have heard of the PhD thesis written a hundred some years ago by a young

man by

the Al Einstein.


UHOH, look out!!!! Jax is gettin serious now, he's pulling out his big
guns, ole Albie Einstein !!!!