kg definition refinement/clarification

-------- Forwarded Message --------
Subject: kg definition refinement/clarification
Date: Sun, 02 Aug 2015 12:54:11 +0200
From: Bernhard Kuemel <bernhard@bksys.at>
To: xxxx@bipm.org
CC: xxxx@bipm.org, xxxx@bipm.org

Hello Dr Hao FANG, Mr Alain PICARD, Dr Michael STOCK, scientific community!

Can you please clarify the definition of the IPK in view of relativistic
effects.

1. Temperature. Adding thermal energy to matter increases its mass by
E/c^2. Adding thermal energy to the IPK decreases mass of all other
matter in the universe.

2. Speed. If the IPK travels at high velocity the mass of all other
matter in the universe decreases.

3. Altitude. Adding energy to lift the IPK decreases the mass of all
other matter in the universe.

4. Gravity/acceleration. I'm not sure what this does.

If an electron/observer flies past the IPK at 0.87 c the mass of the
matter in the universe is halved compared to an electron/observer at
rest relative to the IPK. Of course the orbits in the solar system would
be unaffected by this mass loss, consequently the gravitational constant
would have to increase to compensate the mass loss. Having the
gravitational constant and other values depend on such factors seems bad
to me.

Please can you define the kg by specifying it as the mass of the IPK at
0 K, 0 m/s, some location/altitude on Earth or in
interplanetary/interstellar/intergalactic space or an empty universe and
at 0 m/s^2 or some other acceleration like 9.81 m/s^2.


Thanks, Bernhard Kuemel


PS: Has this request happened before?


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