Posted on 12/07/2013 8:34:53 PM PST by gooblah
An idea hatched around a Dallas swimming pool 50 years ago has blossomed into one of the world’s most prestigious scientific conferences.
Starting Sunday, more than 450 experts on gravity, black holes and the newly discovered Higgs boson — the subject of this year’s Nobel Prize in physics — will gather at the Fairmont Hotel in downtown Dallas to discuss the newest findings and most pressing mysteries in their fields
(Excerpt) Read more at dallasnews.com ...
That is VERY cool! The kid has a lot of talent.
(I don’t understand it — but after watching, my vast ignorance is less vast than it was before)
Gravity is the equivalent of infinite, accelerating universal expansion. I wish the eggheads would see that.
Here’s why:
Look at the units for Newton’s gravitational constant, G:
It is
Centimeters cubed divided by grams seconds squared.
Put it another way. It is
(Centimeters cubed per gram) per second squared.
Since it is something per second squared, it is an acceleration. We know G to be a small but positive number, that something is going to get bigger and bigger.
What is the “something”? Centimeters cubed per gram SB familiar, it is the inverse of the density.
So since the inverse of the density is getting bigger and bigger over time, we correctly conclude the density is getting smaller and smaller.
Thus, the average density of the universe is getting smaller and smaller, the mass is getting spread out in the vacuum, the fact that mass tends to gather together is a consequence of gravity, not the definition of gravity.
Thee big bang didn’t “happen”, it is still “happening”.
All of this is not just my opinion, I’ve read several abstracts that say much the same thing.
I just watched it again and I have a dumb question: If the math leads to ten dimensions, why “compactify” down to four?
Check out loop quantum gravity.
Usually for either convenience or simplification. Like when I heard light has a miniscule mass...I had to re look Einstein’s Field Equations for the base assumptions. That is usually where the weird stuff happens, like spooky interactions at a distance. We have more to fill out for a full understanding.
DK
I loved the normalization issue, he really hit it home.
Did you see this? http://freerepublic.com/focus/f-chat/3098695/posts
It sounded interesting to me, but (sadly) way over my head.
Over mine too...but he was not doing pure thought experiments which I believe are severely overused...biology especially...
He caught an entangled pair...
Amazing!
DK
Gravity is not just out of our grasps, it may be within our lifetimes, we’re just a little behind our feline friends who have been testing gravity for millenia.
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