http://www.online-literature.com/orwell/1984/
George Orwell "1984":
"In the end the Party would announce that two and two made five, and you
would have to believe it. It was inevitable that they should make that
claim sooner or later: the logic of their position demanded it. Not merely
the validity of experience, but the very existence of external reality, was
tacitly denied by their philosophy. The heresy of heresies was common
sense. And what was terrifying was not that they would kill you for
thinking otherwise, but that they might be right. For, after all, how do we
know that two and two make four? Or that the force of gravity works? Or
that the past is unchangeable? If both the past and the external world
exist only in the mind, and if the mind itself is controllable what then?"
http://www.fourmilab.ch/etexts/einstein/specrel/www/
Albert Einstein "ON THE ELECTRODYNAMICS OF MOVING BODIES":
"From this there ensues the following peculiar consequence. If at the
points A and B of K there are stationary clocks which, viewed in the
stationary system, are synchronous; and if the clock at A is moved with the
velocity v along the line AB to B, then on its arrival at B the two clocks
no longer synchronize, but the clock moved from A to B lags behind the
other which has remained at B by (tv^2/c^2)/2 (up to magnitudes of fourth
and higher order), t being the time occupied in the journey from A to B. It
is at once apparent that this result still holds good if the clock moves
from A to B in any polygonal line, and also when the points A and B
coincide. If we assume that the result proved for a polygonal line is also
valid for a continuously curved line, we arrive at this result: If one of
two synchronous clocks at A is moved in a closed curve with constant
velocity until it returns to A, the journey lasting t seconds, then by the
clock which has remained at rest the travelled clock on its arrival at A
will be (tv^2/c^2)/2 second slow. Thence we conclude that a balance-clock
at the equator must go more slowly, by a very small amount, than a
precisely similar clock situated at one of the poles under otherwise
identical conditions."
Pentcho Valev
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