[TheForge] YAK relativity- WAY OT, or not...

[Mike Linn]

Here is the way I understand it...

As a body increases in velocity its mass increases, time slows down and thus
it takes more energy to increase speed even more. As the body approaches c
the mass approaches infinity and thus the energy required to accelerate
approaches infinity also.. therefore it would take infinite energy to
accelerate a body to faster than the local c.

One thing not mentioned here is that light is not a wave nor a particle..
its both..
(that's what's really weird, the 2 slit experiment really blows my mind)

Light is pure energy and thus has a 0 rest mass. Light is NOT affected by
gravity. SPACE-TIME is curved in the presence of a massive body but light
continues to travel in a straight line. Since space-time is curved it
appears that the light curves also. This "gravitational lensing" was
predicted by the Einstein and was proven during a solar eclipse a short time
later.

Relativity never said "nothing" can travel faster than light, what
relativity says is that no INFORMATION can travel faster than light, a
subtle but important distinction. "Bells Inequality" using quantum pairs and
polarized light that seem to violate this locality, but so far no one has
figured out how to send a message using it. Einstein called this "spooky
action at a distance"

As far as blackhole emissions. This was posited by Hawkings and Thorne and
as of yet is unproven but, what they did was make use of Heisenberg's
uncertainty principle to allow for light to "leak" from the blackhole in a
similar way they particles can tunnel through potential barriers. We make
use of this fact all the time in tunnel diodes that are used to create
electrical pulses. Over the life of the universe a blackhole could
essentially evaporate..




'The most exciting phrase to hear in science,
the one that heralds new discoveries, is not
'Eureka!' (I've found it!), but 'That's funny...'

				-Isaac Asimov

mike


-----Original Message-----
osan@netlabs.net writes:
> It's just that bodies seem to develop infinite mass as they approach c,

    Photons don't. :)
This is due to the fact that photons are virtually massless particles as I
recall

> That was the first thing I noticed during my study of special relativity-
if
> a light source is moving away from you, then the light emitted that is
also
> traveling away from you is moving at more than c relative to you. Duh!


Even if this was true and assuming no other forces acting on a measured
velocity of 7C, this would mena the photon was emitted from 6 other sources
traveling at C...ie a star somehow a C emits an x-ray at c emits ...... etc
etc

By the way here folks X-rays escape from Blackholes indicating the ability
to
move at a velocity greater than C...just to enrich this discussion

Ted Jones...just an avid science buff