Space-time Invariance and Quantum
Gravity:
or how c, G, and h create the fabric of
time-space (reality)!
Learn about Space-time Invariance
and Quantum Gravity.
What
significance does using Discrete
Numbers (there is a smallest or
shortest quantity) versus Real Numbers
(where there is no smallest or
shortest quantity) to measure length and time have in the observable
universe. Is it time to abandon the Real Numbers in describing
space-time? What is the smallest time: chronon, hodon, and space:
extintion in SI, Standard International units?
Real small huh, so that is
why we thought the universe was continuos when it was really discrete
or pixelated. Max Planck first calculated this smallest time and
distance in 1899 a year before he formulated blackbody radiation in
December of 1900 in Prussian Academy of Sciences. Max Planck: 'Über
irreversible
Strahlungsvorgänge'. Sitzungsberichte der Preußischen
Akademie der Wissenschaften, vol. 5, p. 440-479-480
(1899). These
are the so called Planck
units or natural units. At 10^-35 meters or 10^-43 seconds
space-time is discrete; so these are the building blocks of physical
reality. The realm of quantum gravity
with
Loop Quantum Gravity and String
Theory (better web access to String Theory)
as two possibilities, at the moment, who knows which if either is
right,
but we will let experiments decide. Find out what and when an
experiment
might be done to detect
some evidence for this very small
structure that has until now only been numerological.
Edge of Physics a Scientific American digital
publication. Free access to "Many articles on strings and other
things" by Michael
J. Duff.
What are the physical consequences to our freedom to move forward and
backward in space, but only forward in time? What
causes
causality?
Is there a cosmic censorship principle that prevents
messing with time travel so you
can not kill your mother before you are
born? Does it even make sense to talk about time travel?
How can we modify the theories of gravity
so that it is no longer time inversion invariant? What does
this
have to do with CPT invariance?
Charge
Conjugation
(transforming
matter to antimatter) Parity (mirror
inversion in space) Time
(going forward or backward in time).
PowerPoint
presentions used on Saturday, April 19, 2008, with some extra things
said after most of the group left. The first Quicktime
Mov movies made by Stephanie Rose Williams, "Zeno2",
while at Drexel University, the second
Quicktime Mov movie "PlankLength"
made by Stephanie Rose Williams Martinez, the
same person, and newest
Quicktime Mov movie made by Stephianie Rose Williams Marinez on this
subject.
This was a special "World Year of Physics 2005" event commemorating
Albert
Einstein's wonderful creative year, Special
Relativity, the
Photoelectric
Effect, and Brownian Motion
papers where published in
1905. Though by 2015 it is hoped that this yearly event will have
evolved enough to commemorate the 100 year anniversary of "General
Relativity" that was invented by Albert Einstein in 1915. So we
have 10
years to figure out Quantum Gravity, if we want to honor his 1915 work!
Tick Tock!
Montgomery
College Planetarium
Last changed 12:31PM on April 25,
2008 by Dr. Harold Williams