No Mass -- no real physics !!

Sue ..i can hardly say you're almost as bad.
There is NO COHERENT cgs SYSTEM of UNiTs.!!
Esu and emu CANNOT relate the AFFiNE GAP.!!
The Heavyside Lorentz scow is DOUBLE cgs.!!
i.e. The esu & emu "equate *SEPARATELY*".!!
The SI Giorgi SYSTEM was best 'til GUESS.!!
brian a m stuckless

Sue... wrote:
PD wrote:
Y.Porat wrote:
PD wrote:
wrote:
everybody agrees that photon has momentum

the dimensions of momentum a

kilogram meter/seconds

kilograms is mass!!

ATB
Y.Porat
-----------------------

The units of momentum are joules*seconds/meter.

and waht are the dimensions of Jaules ? .........(as more basic
dimensions)

I don't know why you think that kg*m^2/s^2 are more fundamental than
joules for the case of photons.


common
it is imposible in righ tphysics that a physical entity
like say energy or momentum can eescape to othere basic
dimentions
afaik th eonly basic dimensions are
in mks kilograms meterss and seconds

Amperes are included in that SI set as well, you'll note. That is a
*convention* which does not in any way dictate physical fundamentality.

if you use another system it must be the same basic
dimensions or else something is wrong in your analysis.
--

I've tried to explain
this to you before. It is dangerous to look at the units of a number
and try to derive physical basis from them. Energy has units
kg*m^2/s^2, but it also has units farads*volts^2,

so what are the more basic dimensions of farads and volts??

I don't know that there are more *physically* fundamental dimensions of
farads and volts. I know that there is a *convention* about units that
are tied to unit *standards*.


you have to go to the scratch!! you cant avoid coming to the same
results
by covering it by more complicated entities.

I'm really not trying to cover it up. I know what you're trying to say.
The problem is that you're ascribing too much *physical* importance to
a *convention* used to set up a system of units.

Indeed, SI and MKS, for the sake of utility, make some
general 'homogenised' assumtions about Maxwell fields.

In interpreting the validity of an electromagnetic expression,
it is frequently helpful to see it in cgs and some
of the other time and homogenity variations which exist.

http://farside.ph.utexas.edu/teachin...res/node6.html
http://farside.ph.utexas.edu/teaching/em/em.html

Sue...


-----------


and it is dangerous
to say that one is more fundamental than the other.

the most basic are kilograms meter and seconds
all the others are derivations of those basics.

ATB
Y.Porat
-----------------

PD

A one meter long pendulum CLOCK *period* beats one second ON the EARth's
SURFACE but that period decreases with ANY increase in ALTiTUDE, at all.

Switching to ATOMiC higher frequency counters simply increases accuracy.
Note ATOMiC higher FREQUENCY COUNTERs are NOT exactly PENDuLUM CLOCKs.!!
Note ATOMiC higher FREQUENCY COUNTERs are NOT altered due to ALTiTUDE.!!
Note ATOMiC higher FREQUENCY COUNTERs are altered, by AMBiENT DENSiTY.!!
Note that a PENDuLUM CLOCK is ALSO EQUALLY altered by AMBiENT DENSiTY.!!

Note that a DENSiTY GRADiENT exists between the EARth and a GPS ORBiT.!!
The DENSiTY GRADiENT PRE-set FACTOR between EARth & GPS is 4.5*10^-10.!!
An ATOMiC mega-frequency COUNT simply BETTER CALiBRATEs a *REAL* time.!!

ANY increase in ALTiTUDE is *motion* ..no matter how slow, or how far.!!
HAViNG the *WRONG TiME* has NOTHiNG to do with TWiN AGiNG on GR trips.!!
brian a m stuckless

Sue... wrote: Y.Porat wrote: OK Henry
the main point is that we agree on a very important
and not least- revolutionary issue!!

mind you it is more revolutionary than we can imagine at first glance

and again No mass - no real physics !!

If we want to compare the space between a 1cm
charge-pair to the space between a 2cm charge-pair
then we must allow that something is different about
the two spaces. We can measure it with a fish scale.

In an experimental context, we cannot measure
the differnce without access to the material
charges. But, are you willing to say a difference
in the two spaces does not exist, simply because
we cannot measure it? That would be like saying
we should not consider the possibilty that the
sun rises every day if we are confined to a light
proof enclosure.

I understand why you (and many others) favor a
more rigid definition of what is physical and
what is mathmatical. --

You have ever critized me, on spelling.?!!

-- Without question, much of
the freewheeling math used, has driven our discipline
to the edge of never-never land but I don't think
it is for lack of rules.

IMHO, practitioners in both fields are overly
optimistic about what we know, and what we don't
know. The popular media amplifies on concepts that
are barely conjectural and the result is
generation(s) that think they know what they don't
and try to build on it. Sensationalism traveles --

Sue, have you ever critized me ..on spelling.?!!

-- faster
than the speed of light.


that is going to be one of the basics of physics from now on
and will save tons of vain mumbling!!

That is a noble goal... but I think you will
find most of the misconceptions in our field
are traceable to inadaquate application of the
scientific method of investigation.

One of my favorites:
Predictions (reasoning including *logical*
deduction from hypotheses and theories)
http://en.wikipedia.org/wiki/Scientific_method

There is nothing *logical* about a clock responding to motion, --

insert ..see top of PAGE.!!

-- yet people who should know better claim
experimental proof of this totally imaginary concept.

Sue...

ATB Y.Porat ----------------------

Sue... wrote:
There is nothing *logical* about a clock responding to motion, --

Note SOME edited text, and a new BOTTOM line:..
A one meter-long pendulum's *PERiOD* beats EXACTLY 1 second, ON EARth's
SURFACE, but the PERiOD decreases with ANY increase in ALTiTUDE, at all.
The GPS EARth-clock OUGHT BE in a Very Low Orbit (VLO) ..not *ON* EARth,
since this is WHAT CAUSEs some GPS Systems to REQUiRE a DAiLY re-SET.!!

Switching to ATOMiC higher frequency counters simply increases accuracy.
Note ATOMiC higher FREQUENCY COUNTERs are NOT exactly PENDuLUM CLOCKs.!!
Note ATOMiC higher FREQUENCY COUNTERs are NOT altered due to ALTiTUDE.!!
Note ATOMiC higher FREQUENCY COUNTERs are altered, by AMBiENT DENSiTY.!!
Note that a PENDuLUM CLOCK is ALSO EQUALLY altered by AMBiENT DENSiTY.!!

Note that a DENSiTY GRADiENT exists between the EARth and a GPS ORBiT.!!
The DENSiTY GRADiENT PRE-set FACTOR between EARth & GPS is 4.5*10^-10.!!
An ATOMiC mega-frequency COUNT simply BETTER CALiBRATEs a *REAL* time.!!

ANY increase in ALTiTUDE is *motion* ..no matter how slow, or how far.!!
HAViNG the *WRONG TiME* has NOTHiNG to do with TWiN AGiNG on GR trips.!!
So, how could ANYone ever know WHiCH CLOCK actually HAD a WRONG TiME.?!!
But, you will FORGET ALL THAT GR gtr Tivity NONSENCE, anyway ..Right.?!!

NEEDless to ADD:
jOE FiSCHER's *NEW SYNoNYM* of "PENDuLUM CLOCK" is an "accelerometer".!!
brian a m stuckless


-- yet people who should know better claim
experimental proof of this totally imaginary concept.

Sue...

ATB Y.Porat ----------------------