Questions for Dr. Lawrence M. Krauss - Page 2

Arneb · #31 (**permalink**) 02-December-2005, 05:47 PM

Dr. Krauss,

assuming the Universe as a whole is geometrically flat (as called for by current csomological models and apparently confirmed by WMAP data) -

Does this mean the Universe is infinite? If it is, was it infinite ab initio, i.e., did the Big Bang create a Universe that was inifinite from the beginning?

If the Universe is not infinite yet still flat and still without "borders" - is it possible to give a geometric analogy for the lay reader? The balloon analogy for "limited surface yet still no borders" only works for a closed Universe, so which alternative representations could be constructed?

Thank you very much
Arneb

Simsthefat · #32 (**permalink**) 04-December-2005, 03:00 AM

If there is so much trouble unifying gravity to the other 3 forces (Electromagnetism strong and weak force). Why are we trying so hard to fit the mis-fitted puzzle piece into the big picture? Is there no way of explaining what gravity is using only quantum physics? Maybe gravity is just a side effect of the other forces interacting with each other.

Simsthefat · #33 (**permalink**) 04-December-2005, 08:32 AM

We are traveling very fast through space and it is said that the more velocity you have, the less you age. So if we were to completely stop and let the expansion of the universes wiz by us, what would time do? Wiz by us as well. It almost seems that we are traveling backward through time

As time is constantly moving forward from 1a.m to 2a.m. and its not easy to simply turn time from 2a.m. back to 1a.m. We are traveling from point A to point B and is not easy to travel from point B back to point A. So the exact Point in space that we occupied the day I was born millions of miles away and millions of seconds away and it is very hard to get back to that same location in space as well as time. How would time react with movement through space at an absolute Zero?

RussT · #34 (**permalink**) 05-December-2005, 12:21 AM

Dr.Krauss;

The following is from;

http://www.bbc.co.uk/science/horizon...unitrans.shtml

Here is a short paragraph, and my question will follow.

NARRATOR: The tiny invisible strings of String Theory was supposed to be the fundamental building blocks of all the matter in the Universe, but now, with the addition of the eleventh dimension, they changed. They stretched and they combined. The astonishing conclusion was that all the matter in the Universe was connected to one vast structure: a membrane. In effect our entire Universe is a membrane. The quest to explain everything in the Universe could begin again and at its heart would be this new theory. It was dubbed Membrane Theory, or M Theory, but so enigmatic and profound did the idea seem that some thought M should stand for other things.

[, but now, with the addition of the eleventh dimension, they changed. They stretched and they combined. The astonishing conclusion was that all the matter in the Universe was connected to one vast structure: a membrane. ]

Dr. Krauss, shouldn't the astonishing conclusion be, that since the strings stretched and combined, that they are connected as 'membranes' throughout the entire 11th dimension, throughout our universe?
In other words, if the strings are "IN" our universe, if they stretch and combine, doesn't that put the "Membranes" "IN" our universe, and shouldn't that mean the 11th dimension is "OUR" Universe, with the strings and membranes "INSIDE" "OUR" Universe?

Thank you
RussT
S=G
I have a registered Theory, that says...when the membranes touch, it causes a 'singularity' (GRB's) "INSIDE" our universe and makes Galaxies, not universes.

Fraser · #35 (**permalink**) 07-December-2005, 04:39 PM

Okay, I'm going to give everyone another day. So, midnight December 8th, 2005 to pose any questions, and then I'll pass our favorites along to Dr. Krauss. Keep 'em coming.

RussT · #36 (**permalink**) 08-December-2005, 01:58 AM

Fraser;

Are you going to provide a list of which questions have been chosen to be submitted?

RussT

Larry · #37 (**permalink**) 08-December-2005, 05:37 PM

Question for Dr. Krauss,

What is your opinion of the conjecture that the speed of light varies over cosmological time?

Nereid · #38 (**permalink**) 09-December-2005, 01:49 AM

It's still not midnight on the 8th, in some parts of the world, so here goes ...

How would the equivalent of thermodynamics in String/M-theory differ from the classical thermodynamics which is taught in undergrad physics classes?

How would the relationship between information theory and thermodynamics change in String/M-theory (from that laid out in Claude Shannon's classic paper)?

mickal555 · #39 (**permalink**) 11-December-2005, 10:52 AM

Whats the meaning of life...?

mickal555 · #40 (**permalink**) 21-December-2005, 02:09 PM

Quote:

Originally Posted by Fraser

Okay, I'm going to give everyone another day. So, midnight December 8th, 2005 to pose any questions, and then I'll pass our favorites along to Dr. Krauss. Keep 'em coming.

...

George · #41 (**permalink**) 21-December-2005, 02:32 PM

Quote:

Originally Posted by mickal555

...

You just had to ask him the meaning of life.

mickal555 · #42 (**permalink**) 22-December-2005, 10:08 AM

well.. I was woundering...

George · #43 (**permalink**) 22-December-2005, 02:41 PM

Quote:

Originally Posted by mickal555

well.. I was woundering...

Me too, but I suspect the answer is hiding in a mirror.

[My brother just gave me this book, which Krauss wrote. I am enjoying it, though I have only started.]

Maybe the delay is from the heliochromoloy stumbling block. Only an elite have even heard of it.

nokton · #44 (**permalink**) 26-December-2005, 08:00 PM

Quote:

Originally Posted by trinitree88

Dr. Krauss. As a physics and chemistry teacher, I have given talks at American Association of Physics Teacher's Meetings, sometimes jointly held with the American Physical Society Meetings at Vassar College(92), Williams College(93), Harvard University(94), Norwich University(99), and Hartford, Pratt&Whitney Aircraft(2004). (Also talks at local Astronomy clubs in New England)Most of these have involved supernova theory in some capacity or other....their energetics, morphological characteristics of remnants, parity effects, pulsar characteristics, a solution to the Supernova Problem, neutrino forward-scattering, gravity waves, prompt neutrino bursts, galactic escape velocities for pulsars. Subliminal to these talks has been my hints at an underlying mechanism for pulsar ejections which is involved in a unified field theory I wrote some 23 years ago. ...simple, but valid. I would like to give a talk on that idea at Fermilab. Leon Lederman personally pushed for high school science teachers, and particularly physics teachers to be more collaborative with industrial-academic coalitions. Been there, done that. Boston College asked us to conduct a little piece of research ourselves to stay current. Been there,too,done that. This little talk will show the merits of encouraging such things...a high school physics teacher will reveal the only valid quantum theory of gravity yet to predict physical effects seen at six different major labs or institutions in the world. It's posted in these forums piecemeal, and you will note. I do not violate the precepts of SR or GR. I do not violate the Hierarchy of Conservation Laws. I obey Lorentz invariance, and hold others to it too. Gracious Bill Bertozzi, who ran the worlds largest particle physics group..the Nuclear Interaction Group...at MIT, said of my off-the-cuff talk ( I had 15 minutes to prepare)..on the relation of the results of the He-3 parity experiments at Bates to the parity effects in type-2 supernova pulsar ejections.."that's the kind of thinking we need going on around here(Bldg 26 lecture hall). So, I'm putting you on the spot, "Can you open the doors of Fermilab to the patient, genuine, radical thinking,near-solitary thinker, who has confounded them all? "
P.S.My letter to Leon Lederman went unanswered. My dad used to say ( I wish he was here for this as he used to letter the stalls for Man-O-War, Citation, etc..), put your money where your mouth is. Pick a horse. Buy a ticket. Go down to the rail. Feel the thundering herd go by. Watch the clods of dirt flying from their hooves. Listen to the heavy breathing of the steeds, and the cursing of the jockeys, the leather saddles creaking, and groaning. Watch the steaming, flaring nostrils....and scream em home! When you win at the track. It's simple. You cash your ticket. When you win in physics, it's not so clearcut.

Ciao. Pete

PPS. In the New England forum I will give similar talk locally, as a memory to Al Rosenburg of Keene State for his help as chair of the Williams event.

Get yourself a life and start thinking for yourself for a change. Think about
what you really think, and stop the diatribe about others. You cannot
piggyback on how others treat you to excuse your failings, stand up and
be counted, or but out

Jerry · #45 (**permalink**) 28-December-2005, 01:20 AM

Wolverine · #46 (**permalink**) 02-January-2006, 12:23 PM

Quote:

Originally Posted by nokton

Get yourself a life and start thinking for yourself for a change. Think about
what you really think, and stop the diatribe about others. You cannot
piggyback on how others treat you to excuse your failings, stand up and
be counted, or but out

Yikes, I missed this post.

nokton: your tone here is entirely inappropriate, and is really skirting a Civility & Decorum violation of the forum rules. I must advise you to remain polite.

trinitree88 · #47 (**permalink**) 02-January-2006, 04:06 PM

Dear Dr. Krauss. This is a question of scale. The latest issue of Sky & Tel magazine has a short article on supernova models with acoustic signatures attributed to shock bounce off the core.(Adam Burrows). (Stan Woosley was interested in seeing new theoretical musings) So, the question is,.. Will a supernova remnant 200 light-years in radius (our Local Bubble) have the same angular anisotopies due to acoustical signatures of a local supernova, that the Big Bang has due to it's surface of last scattering..~380,000 light-years in radius?
While the BB surface should in no way show a local reference frame preferential orientation, the local supernova most likely would due to common polarization of star clusters from their nursery environs. (Steve Strom...UMASS). Thanks Pete.

George · #48 (**permalink**) 03-January-2006, 07:47 PM

Unfortunately, there was a cut-off date for questions... Dec. 8th.

Quote:

Originally Posted by trinitree88

Dear Dr. Krauss. This is a question of scale. The latest issue of Sky & Tel magazine has a short article on supernova models with acoustic signatures attributed to shock bounce off the core.(Adam Burrows). (Stan Woosley was interested in seeing new theoretical musings) So, the question is,.. Will a supernova remnant 200 light-years in radius (our Local Bubble) have the same angular anisotopies due to acoustical signatures of a local supernova, that the Big Bang has due to it's surface of last scattering..~380,000 light-years in radius?
While the BB surface should in no way show a local reference frame preferential orientation, the local supernova most likely would due to common polarization of star clusters from their nursery environs. (Steve Strom...UMASS). Thanks Pete.

This is a cool question, however. You might want to start a thread on it. [Wouldn't the intial angular momentum due to star rotation reveal anisotropy? You are assuming expansion into a near perfect vacuum, right? Wouldn't your idea be helpful in 1A determinations vs. type II?]

VanderL · #49 (**permalink**) 03-January-2006, 07:56 PM

Quote:

Originally Posted by George

Unfortunately, there was a cut-off date for questions... Dec. 8th.

Any idea when we can expect Dr Krauss' interview?

Quote:

Originally Posted by George

This is a cool question, however. You might want to start a thread on it. [Wouldn't the intial angular momentum due to star rotation reveal anisotropy? You are assuming expansion into a near perfect vacuum, right? Wouldn't your idea be helpful in 1A determinations vs. type II?]

Yes, I would like to see some discussion on the question.

Cheers.