Re: has light got mass?
Y.Porat
<ew...@sirius.tg00suus7038.net> wrote:
> In sci.physics, BURT
> <macromi...@yahoo.com>
> wrote
> on Mon, 6 Oct 2008 15:57:11 -0700 (PDT)
> <e33349ca-cad0-439e-90cd-d1dac8fd2...@v13g2000pro.googlegroups.com>:
>
> [crunch]
>
> > You can substitute mass for energy for light's momentum.
>
> Depends on what theory you want to use. In standard
> Newtonian theory, a light quantum's momentum is
> p = mc and its energy is E = 1/2 m c^2, yielding p = 2E/c,
> exactly twice the value predicted by Special Relativity,
> or a variant thereof.
>
> There is also the quibble regarding unit conversion;
> 1 kg = about 9 * 10^16 J (E = mc^2, or E^2 = m^2c^4 + p^2c^2).
>
>
>
> > Mitch Raemsch
>
> --
> #191, ewi...@earthlink.net
> Linux. Because Windows' Blue Screen Of Death is just
> way too frightening to novice users.
> ** Posted fromhttp://www.teranews.com**
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there is no momentum without mass !!
momentum without mass is only for fucken mathematicians
that call themselves physicists
ATB
Y.Porat
-------------------------------
Eric Gisse
How do you know?
Electric and magnetic fields carry momentum. They don't have mass.
Y.Porat
can you prove it by experiment ??
(do you claim it based only on some theory ??
if yes than fix or adjust your theory !)
th e dimensions of momentum are
kilogram meter /second .....
the ' Kilogram' there is not just for decoration
**it is indispensible there **
iow
if you put zero before that' Kilogram' as a multiplyer
you will get zero momentum !!
the needed correction that has to be inserted to the 'existing
understanding'
is
that the photon is a limit exception case
of mass that can move at c (probably the smallest mass)
thats all !!!
ATB
Y.Porat
--------------------------
Eric Gisse
http://pdg.lbl.gov/2007/listings/s000.pdf
The fields would behave in a specific way were photons massive. We've
been over this before.
[snip dimensional analysis whining]
Y.Porat
----------------------------
its time that you will start 'whining' like that
ATB
Y.Porat
and Bye
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------------------
Eric Gisse
[...]
After all these years you still do not understand that your
'definition' of the photon's mass entirely depends on which system of
units you are using.
BURT
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For momentum mass can sustitute for energy.
Y.y.Porat
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after all thjese years you do not understand that
IF SOME PHYSICAL FACTS ARE RIGTH IN ONE LEGITIMATE
UNIT SYSTEM
IT IS RIGHT FOR ANY OTHER UNIT SYSTEM AS WELL
or else the used sysem would not be a legitimate
useful system
2
it was shown to you that no matter what system you use
if you really analyze it *to scratch*
you will find mass in energy
no matter what unit system you will use
i remeber well that
Frazire (spelling ??) showed it even in the cgs system
but you must be expert enough to dig it out
(and actually be open motivationaly to do it ).....
ATB
Y.Porat
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Y.Porat
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???????????????
Y.P
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BURT
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Substitute mass for the energy in the momentum of light.
Mitch Raemsch
BradGuth
The matter/antimatter(MAM) photon has mass while at c.
At less than c the MAM photon represents less mass.
Photons can also be smaller than electrons, if not 2D quantum string
like.
~ BG
Y.Porat
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are you sure you know what you are talking about ??
please show it in formulas
Y.Porat
----------------------
Y.Porat
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(:-)
Y.P
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BURT
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It is done all the time. Substitute mass for energy.
Y.Porat
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mass is not energy
energy is
mass IN MOVEMENT !!!
in some cases while mass is converted to energy
it is
E=mc^2
in that case
the inner (invisible) movement
inside the subparticles composing the mass
were sot out as visible
mass in movement
in that case the velocity of that shot out mass
is moving at c---- as photons
ATB
Y.Porat
------------------------
ATB
Y.Porat
---------------------------
BURT
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Energy is infinitely dense C sqpoint particles of matter
Y.Porat
> Y Porat Free electrons have the right energy balance,and do not absorb
> or emit photons. The photons give these free electrons a push and kick
> them off a metals surface. Einstein knew this,and got his Nobel. Fact
> is laser light can push electrons up to 99.9999 of c Photons are
> particles coming out of star cores,and gravity changes their wave length
> creating a mixture that creates white light. White light is best for
> reflection. TreBert
-----------------
please answer the questions:
does the photon has mass??
2
is mass conserved??
TIA
Y.Porat
----------------------
Y.Porat
> Y.Porat Yes photons are conserved. Yes gamma photons have to have
> mass,or give that features we associate with mass
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ok so we have another member in our
'photon has mass; club (:-)
and please dont forget to add that
THERE IS JUST ONE KIND OF MASS
no matter how do you call it
ATB
Y.Porat
-----------------------------------
. Gamma best for
> kicking free photons of metal surface. Photons with longer waves such as
> those that are seen as red no matter how strong their force can not
> kick electrons off a metal. Use a red bulb in my dark room. TreBert
BURT
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Mass is infinitely dense energy at a standard C squared.
Y.Porat
> Y Porat Light can not get old Photons that emerged from the BB are the
> same age today as then. Energy or mass equal the same thing Two sides to
> the sAME COIN
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No Sir
mass and energy are not the same thing
as well as as a horse and a horse race is not the same!!
energy is MASS IN MOTION !!
got it??
what is so difficult to remember that ??!!
it is in microcosm exactly as in macrocosm !!!
-----------
Einstein E M ^C2 told us that. Mass can be hypothesised
> as frozen energy
it is not frozen energy at all !!
E=mc^2
it is mass in INNER motion (hidden motion) that you cant see it
what is so difficult to remember that ???
a special; case in which very small particles (may be the smallest)
move withthe inner velocity of c
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Y Porat Do you7 have a better definition for Mass?
no need for a better definition
it is as the old definition:
a property of matter to resist changes in motion or in rest
position !!
now you will ask waht is matter ??
matter is matter .... (:-) an experimental fact and observation
if you like matter is a basic postulate
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----------------
> End by going again with Einstein mass thinking,and it tells me this
> The more energy something has the more massive it becomes. Thus it would
no Sir
more energy of the same mass is more MOTION
to the same mass !!
so difficult to get it ??
-----------------
> take an infinite amount of energy for an electron to be pushed to c
the mass of the electron cannot be pushed to c
it is only a much smaller mass that can be pushed to c
what is so difficult to get it ??
ATB
Y.Porat
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> TreBert
extremesou...@yahoo.com
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the rest mass has stored energy once its kenetic then it can be
accelerated to its full speed
Y.Porat
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iow
energy is mass in motion
even if we cant detect the(inner) motion
at the 'first glance'
ATB
Y.Porat
----------------------------
Y.Porat
> Y. Porat You just do not get it. Reason you go against this THE MORE
> ENERGY THE PARTICLE GETS THE MORE MASSIVE IT BECOMES (big printing to
> get that fact into your brain) This has been proven TreBert
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i am disaponted from your intelligence
ans your ability to learn something new
it is not
F =gamma m a
it is F/Gamma =m a
and m remaines constant
if you don get it i am waisting my (precious) time on you
BYE
Y.Porat
---------------
Eric Gisse
I love it when retards argue about algebra.
extremesou...@yahoo.com
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particle's momentum p such that it behaves in well-defined ways that
are an extension of the newtonian case. Although p and v still point
in the same direction, it turns out that they are no longer
proportional; the best we can do is relate them via the particle's
"relativistic mass" mrel. Thus,
When the particle is at rest, its relativistic mass has a
minimum value called the "rest mass" mrest. The rest mass is always
the same for the same type of particle. For example, all protons,
electrons, and neutrons have the same rest mass; it's something that
can be looked up in a table. As the particle is accelerated to ever
higher speeds, its relativistic mass increases without limit.