Using local units, will an observer measuring the Proper Values of his own height, find a different value, after moving to another frame?
A. – No. He finds the same number of units. Of course, his own height has changed. However, the number of units are the same because the length to be measured (the moving observer) has moved as well as the meter used for the measurement. When moving to a different frame, the standard meter changes by the same amount as the height of the human body, since they both (the body and the standard meter) are submitted to the same change of velocity and the same change of gravitational potential. The Bohr radius changes by the same ratio for both the observer and the standard meter. ———————– Question – (1-F) If we move from Earth to the orbit of Mercury (always neglecting the mass of Mercury), will we find that the number of units giving the size (of an external body) of the Sun (using Mercury proper values) is the same as measured from Earth (using Earth proper values)? A. – No. Because now, the size of the meter carried out with the observer from Earth to Mercury’s orbit, does
Related Questions
- Why does the local observer (in a moving frame) not use the same universal standard meter (and standard clock) as defined everywhere else (instead of his local meter and local clock)?
- Using local units, will an observer measuring the Proper Values of his own height, find a different value, after moving to another frame?
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