Re: Proof for E=mc2

From: Androcles (dummy_at_dummy.net)
Date: 01/16/05 

Date: Sun, 16 Jan 2005 11:14:35 GMT

"Zigoteau" <zigoteau@yahoo.com> wrote in message
news:1105869214.559400.75740@z14g2000cwz.googlegroups.com...
> Hi, Androcles,
>
>
>> I cannot agree with that. Newtonian physics readily accepts potential
>> energy, given up as kinetic. The cork bobbing on water or the mass on
>> a spring are examplars.
>
> Nobody is denying it.
>
>> We accept the sun is constantly pouring away
>> enormous quantities of energy, the potential form of which is it's
>> mass,
>
> ?? That's a relativistic concept.

Whatever you call it, it happens.
Why does it need to be called "relativistic"?

>
>> > and mass is measured as force.
>
> ?? No it's not

No? Oh... I'll throw away my bathroom scale, shall I?
Just how DO you measure mass, then?
F = dp/dt, I thought.
Hmm.. maybe I don't have mass if I'm not moving, huh?
I'm willing to learn new tricks, go ahead and tell me how its done.

>
>> The potential energy (mass)
>> concentrates into a small space by some force we call gravity,
>> (again in NM)
>
> OK
>
>> and the resultant pressure at the core gives rise to
>> the release of the mass as radiation.
>
> No

Ok, have a nice day.
Androcles

>
>> Finding an equation relating
>> the two was not something Newton did, that is agreed, but Newton's
>> physics didn't end with Newton. They continued once experiments
>> with electricity and magnetism were made, and diverged when
>> Einstein began guessing with his "thought" experiments.
>
> They . . Newtonian physics? . . started running into trouble at the
> end of the 18th century with various discoveries, including
> radioactivity.
>
>> Any equations you write are intended to represent the world
>> in which we live,
>
> Absolutely
>
>> not a wild imagination where time, previously
>> invariant, and distance, previously invariant, give up those
>> properties in favour of light's speed being invariant, and gives
>> up the PoR as well.
>
> Since when has imagination been a bad thing per se? Are you taking
> pride in your lack of it?
>
>> Einstein states:
>> "But this result comes into conflict with the principle of
>> relativity set forth in Section V. "
>> ref. http://www.bartleby.com/173/7.html
>> He is in fact stating that the velocty of A with respect to B
>> differs from the velocity of B with respect to A.
>
> Isn't that something to be bothered by?
>
> And I do like the story about Einstein imagining himself sitting on a
> light beam, which would then apparently have an impossible
> distribution
> of electric and magnetic fields.
>
>> How can you reconcile the collision energy? Does the stationary
>> car do less damage to the moving car than the moving car
>> does to the stationary?
>
> The risk of death or serious injury in a road accident is much greater
> in a SUV than in an ordinary car. (Just to join in the spirit of the
> thing and bring in a completely irrelevant fact.)
>
> Cheers,
>
> Zigoteau.
>

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