Re: Symmetric language

Uncle Al wrote:

> Edward Green wrote:

<...>

> Ignorant idiot.

Every time I dare politely dispute one of your oracles, you resort to
insult and bluster?

> [snip]
>
> > Charge reversal, time reversal and parity reversal are not continuous
> > transformations, and as far as I know no conserved quantities attach to
> > discrete symmetries through Noether's theorem.
>
> You are light on math and empty of known content.

Unresponsive.

Does Noether's theorem apply to discontinuous symmetries, or not?

Don't you know, or don't you want to admit that you shot from the hip
yet again and hit yourself in the foot still bleeding from the last
time? The long section which you copied into your post, without
attribution, shows you both wrong and too careless to read the material
you were plagiarizing.

Tsk.

> > I know just enough to be dangerous. ;-)
>
> You harbor unbounded delusions of competence.

In this instance I happened to be right. Tant pis for you.

> [snip]

> Empirical demonstration of parity nonconservation in January 1957
>
> http://physics.nist.gov/GenInt/Parity/cover.html

My suggestion was merely that the conventional phrase "parity
conservation" is poorly chosen, and that there is no physical quantity
called "parity", analogous to charge or momentum, which is conserved.
The fact that an experiment completed in 1957 tended to demonstrate
that known physics is not invariant with respect to parity inversion is
not in dispute. The fact that this lack of invariance in not
infrequently labeled "parity nonconservation" is neither in dispute.
But I do suggest that the conventional phrase is carelessly chosen and
misleading.

Since you are so wrought up about my simple semantic point, could you
perhaps explain to me how "parity", which you feel is indeed a
conserved quantity in the conventional sense and one predicted from
Noether's theorem, is to be measured experimentally?

> made Tsung Dao Lee and Chen Ning Yang Noble Laureates/Physics in
> December 1957. The speed record still stands. The first test of
> gravitational parity violation will be complete in mid-September. The
> whole of physics is looking for Lorentz violation,
>
> http://www.physics.indiana.edu/~kostelec/faq.html
>
> Uncle Al simply got there first - unburdened by PERT charts, budget,
> staff, management, equipment, progress reports... or expectations of
> productivity. He called out to the Severely Gifted and they
> volunteered an Army of Light. If it succeeds at the end, so much the
> better.

Well, if you do succeed, it will be illustrative of something -- that a
persistant but flawed person can make a difference even if burdened by
entire swarms of conceptual errors -- no doubt happens in business all
the time. Chutzpa and energy helps. Watch that tendency to cover
yourself with insult and BS when you feel cornered. People will notice.

.