THIS is what observer A sees:
_________
B's ruler: ||||||||||| = smaller (-)
|_________|
___________________
A's ruler: | | | | | | | | | | | = larger (+)
|___________________|
THIS is what observer B sees:
___________________
B's ruler: | | | | | | | | | | | = larger (+)
|___________________|
_________
A's ruler: ||||||||||| = smaller (-)
|_________|
There are in total, 4 measure entries. Notice
that for each "+" there is a corresponding "-."
Because a measure of relative size is simply a
measure of difference, we could've ascertained
a priori that the change in size would sum to
0 by observing that as a rule, the sum of
all differences between all numerical
measurements always equals zero:
0 1 2 3
____________
0 | 0 1 2 3 |
| |
1 |-1 0 1 2 |
| |
2 |-2 -1 0 1 |
| |
3 |-3 -2 -1 0 |
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VISIT IAN WILLIAMS GODDARD --------> http://Ian.Goddard.net
______________________________________________________________
"A new scientific truth does not triumph by convincing its
opponents and making them see the light, but rather because
its opponents eventually die, and a new generation grows
up that is familiar with the idea from the beginning."
Max Plank - Nobel physicist
"The smallest minority on earth is the individual.
Those who deny individual rights cannot claim
to be defenders of minorities." Ayn Rand