Sorry this is belated. We had a nasty thunderstorm go over us this afternoon and I shut everything down in the middle of my reply. Just now getting back to the PC (11 pm)...
I'll bet you were a GREAT teacher as you worked your way up, yes?
Thank you very much for chatting with us "armchair physicists", as you have time. It is *VERY* mentally stimulating! I have one heck of a headache, but for once in many years, it's for a positive
t00fri wrote:Clearly, I can hardly anymore go explicitly though all of your questions and comments ...
Agreed. I had considered breaking the questions/sub-topics up into individual post topics, but it got too late this morning <frown>. It might still be a good idea to do this when you reply to one of the items on the list you created. That way we can keep the individual sub-topics separate, instead of having this thread become a 1,000 message monster. Personally, I wouldn't worry about who asked what question, since anyone reading this thread is more than likely interested in most all of it.
t00fri wrote:--again what is a warped space-time geometry?
When you reply to this one ... The NY Times article mentioned above (which is pretty good - thanks guys!) related the six "invisible" dimensions as being like the small loops in a carpet (with the carpet being our observable universe). This made sense to me.
When I see the word "warped", I think of a piece of untreated, cut lumber that has been sitting outside in the rain and sun for several months. It gets "warped" in both directions, length-wise and width-wise.
However, might "warped" dimensions be better described as "curved" or "bent", like bending a piece of sheetmetal to form a "U"? Or, warped in some other, complex geometrical manner?
The bottom line on this sub-topic is not so much to describe *what* warped means, but why
these extra dimensions are supposed to be (theoretical), or are (verified), "warped, and what you and your team are actually doing
(looking into, theorizing, etc.) along the lines of "warped extra dimensions"
--------< Thunderstorm Break -- several hours later .... >----------
t00fri wrote:-- meaning and relations of: dark energy, cosmological constant, vacuum energy, zero point energy
--purpose of extra dimensions (for theoretical physicists)?
--why are six dimensions fashionable?
--Hawking's state of health
--why we hope to produce little black holes at the next generation of particle accelerators?
--good reviewer names for "strings, branes, extra dimensions, new cosmology..."
If I forgot anything crucial, please let me know, while I am thinking how to present these things in a non-tech and most intuitive manner....
I think that pretty much covers all the questions I had.
be interesting to find out how we might, or are, interacting with (directly or indirectly) these warped extra dimensions (WEDs). Such as, what kind of measurements can we take (temp, density, composition, etc.?), how would they be, or are they performed, and what are we "expecting" to see / find in these measurements?
Can we currently create WEDs, or only "non-warped" extra dimensions? Or are *all* extra dimensions "warped" by definition?
Are they observable?
If we can create millimeter size extra dimensions, can we create even bigger ones? Or are we simply "coaxing" existing microscopic extra dimensions to become "large", meaning one millimeter, in a specific area we define?
Thank you once again Fridger, for this most enlightening conversation!