It is hard to accept the notions of space, time, and mass change
in relativity. Still consider, for example, that electron beams are
spiraling, and as more energy is added, the beam spirals more,
the energy goes into spiraling motion, not more mass, and the
distance traveled is longer because of the tightening spiral path.
What is interesting about general relativity, according to a friend
with PhD in astrophysics, is that it allows for extraction of energy
from gravity. Unlike Newtonian gravity that is conservative - cannot
get more energy out than put in. Note that Nasa used the so-called
slingshot effect stating less fuel was used with a longer path.
http://quest.arc.nasa.gov/galileo/edbrief/galileopage5.html
Now, can the slingshot effect be used with electrons on magnets?
Lawrence
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