Re: What is mass?
From: N:dlzc D:aol T:com \(dlzc\) (net_at_nospam.com)
Date: 02/24/05
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Date: Thu, 24 Feb 2005 09:08:36 -0700
Dear khrapko_ri:
<khrapko_ri@hotmail.com> wrote in message
news:1109259712.958471.182320@g14g2000cwa.googlegroups.com...
>
> N:dlzc D:aol T:com (dlzc) wrote:
>> Dear Radi Khrapko:
>>
>> "Radi Khrapko" <khrapko_ri@hotmail.com> wrote in message
>> news:352716a5.0502231157.685c02c@posting.google.com...
>> ...
>> > Unfortunately, the great idea of relativistic mass is carefully
>> > isolated from youth.
>>
>> Given relativistic mass m1 and relativistic mass m2, with
>> m1 << m2, what is the period of its orbit, assuming the
>> orbit is circular?
>>
>> Relativistic mass is a whore, comely at first, but fickle.
>> That is why mass is defined as rest mass, and to be
>> properly understood, you should always preface your
>> intent to use relativistic mass by the word "relativistic".
>> That way, those that know can avoid you, and you can
>> confuse the rest of humanity with a clear conscience.
>> They have been warned.
>
> Your problem about m1 & m2 is senseless. The period is independent on
> body's mass. A body's world line is independent on body's mass.
Incorrect. Explain that to Kepler. The period is dependent on the
*system's* mass, and if you are flying towards the system... so that the
system has relativistic mass... if you go fast enough, the system must
become a black hole.
> Your
> problem points to your weak-mindedness. And this explains why you can't
> understand that "it must always be that U=mc^2".
So how is Peter M. Brown in his new nym to draw hate mail from Bilge these
days?
"Weak-mindedness" is the problem of people that do not speak so that others
can understand. Language and mathematics are not supposed to be tools used
to keep the elite safe from the masses. They are supposed to be tools of
understanding. Try and use them that way.
By the way, since I have identified you as Peter M. Brown (whether you are
or not), I need to say goodbye.
Goodbye.
<plonk>
David A. Smith
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