On Oct 7, 4:35 am, "Pmb" wrote:
"Ken S. Tucker" wrote in oglegroups.com...



On Oct 6, 1:21 pm, "Pmb" wrote:
"nill" wrote in message

roups.com...

i hear a lot of people around me telling
that it wasnt einstein inventing relativity,
but some other guys before him

And yet these other guys can't prove it for themselves?

There were at least two other people who were significanlty involved. One
was a mathematician named David Hilbert who also worked on General
Relativity. In fact he worked with Einstein during November 1915. The
final
steps to the theory of general relativity were taken by Einstein and
Hilbert
at almost the same time. They both discovered the same final form of the
gravitational field equations within days of each other must indicate
that
their exchange of ideas was helpful.

The other his friend was his friend Marcel Grossman. I'm not sure how
much
they worked together but I do know that they published a paper together
called "Outline of a Generalized Theory of Relativity and of a Theory of
Gravitation." The first part was called "Physical Part" and was written
by
Einstein while the second part was called "Mathematical Part" and was
written by Grossman.

exactly what was einsteins contributon to relativity,

To hard to quantify but he contributed to most of it. Ask an historian
that
question.

.. did he stole his tensors?

You can steal a tensor as much as you can steal the number 4.

Pete

123 567, something looks missing.
From what I've gleened from bio's, AE
learned tensors in his 30's, but most
guys today started in their teens, that's
a big advantage, growing up with them.

I learned enough mathematics to get a degree in math during my 20's. I had
two majors and they only let me have one major on the diploma. Since I'd
rather be a physicist than a mathematician I chose Physics as my primary
major. All I really did is to take a handful of courses that I otherwise
would have filled with basketweaving and wham! Second major. I started
learning about tensors in my 30's and really hammered down on them when I
was 39. Since then its mostly what I've been studying. Or I've been studying
something which would aid in my sudy of tensors such as refreshing my memory
on Linear and Abstract Algebra.

Well in tensors (IMHO) you're in Daryl's
league, which is about as good as they come.

If I had my way, I'd start tensors in
public school, which in a way is done
by learning conversion from metric units
to imperial units for length, areas,
volumes, mass etc.
Yea Fahrenheit!
Ken

I woder if it'd work?

As a brat I'd enjoy tracing and drafting.
When it hit me that I could trace a plain
line from a blank sheet of paper onto any
kind of graph paper, (metric , 1/4", polar,
isometric graph paper etc), it's the *same*
line, simple enough but it was a wow moment.
Later, when reading GR, CS transformations,
General Covariance and Invariance were all
very impressive - that the big shots had
actually formulated an entire branch of math
to that subject, tensor analysis.
It was also democratic, in that anyone may
select there own PoV (CS) and arrive at
different numbers even looking at the same
thing.

So I think it would work, it also provides
a simple way of "relating" different CS's
which is a basis of relativity. The "wow"
moment I described is easily available to
Public School kids.
Regards
Ken S. Tucker