Spending

keepit wrote:

Into the Night wrote:

keepit wrote:
I just read a few articles about the ross ice shelf. The ones i read aren't quite as alarmed as me (i feel so much better now). Ross is supporting land based glaciers but it isn't in as imminent danger as i had heard. Someone could come up with a different study though.
This doesn't mean the planet isn't warming.

The only way Earth could be warming is if the output of the Sun is increasing.

The earth retains heat locally and temporarily when there is cloud cover.

keepit wrote:
Maybe my scientific terminology gets a little sloppy, sorry.
Anyway, by heat and retain i meant that the temp stays higher than it would if there were no thermal insulator.

keepit wrote:
ITN,
Regarding your opinions about social security and medicare.

keepit wrote:
Social security is just fine.

keepit wrote:
When they get close to crunch time they will increase the amount of income that is subject to social security and solve the problem.

keepit wrote:
They ought to do the same for medicare and maybe just combine them into one trust fund.

keepit wrote: Maybe my scientific terminology gets a little sloppy, sorry.

keepit wrote: Anyway, by heat and retain i meant that the temp stays higher than it would if there were no thermal insulator.

keepit wrote: Semantics causes a lot of confusion.

keepit wrote: I don't know what you mean by fence.

keepit wrote: Medical costs are trying to outrace limit increases though. I hope that statement isn't too vague.

keepit wrote: Speaking of reasonable and thought experiments, what do you think about dark energy and extra dimensions.

keepit wrote: Any answer along the lines of claiming false science would be unacceptable.

keepit wrote: My question is about thought experiments. Nothing has been verified experimentally or by theorizing.

keepit wrote: My thought is that dark energy is the result of extra dimensions unpacking into our familiar dimensions in the presence of "rarified gravity" as in the case of between galaxies. The extra dimensions result in extra space and the case of an expanding universe.

Just curious to see if you had any special thoughts on the subject. I don't ask many people that question even though i did teach the possibility back when i was a volunteer teacher.

keepit wrote: This theory is about curved space, sort of like negative curvature in expansion and positive curvature as in gravity.

keepit wrote: Yes. It is part of the positive-negative-flat view of space. Friedman equation.

keepit wrote:
I tried to understand the Friedmann equation many times before i got a handle on it.
The density determines the curvature.

keepit wrote:IBDaMann,
You just said "nope" to my post but i think you actually agreed.

IBdaMann wrote:

keepit wrote:IBDaMann,
You just said "nope" to my post but i think you actually agreed.

I *believe* I disagreed with what I *believe* I understood you to have said.

You said that the type of curvature of space is determined by the cosmic density and I mentioned two things, ...

First, there aren't "types" of curvature of space, that there is only "curvature" whose extent is determined by the gravity at that point (note: this affects the rate time passes and is referred to as an "inertial frame of reference"),

... and

Second, that the cosmic d e n s i t y i s d e s t i n y and is not the determinant of space-time curvature.


I re-read your posts and you did not write all of the above so I don't believe I was agreeing with you ... but if you meant all of the above then yes, I agree with you.

keepit wrote:
I don't know what you mean by fence.

keepit wrote:
I think increasing the limit significantly will make all the difference we need.
Medical costs are trying to outrace limit increases though. I hope that statement isn't too vague.

keepit wrote:
Semantics causes a lot of confusion.

keepit wrote:
ITN,
Just curious. Where do all these unusual words you have come from?

keepit wrote:
My thought is that dark energy is the result of extra dimensions unpacking into our familiar dimensions in the presence of "rarified gravity" as in the case of between galaxies. The extra dimensions result in extra space and the case of an expanding universe.
Just curious to see if you had any special thoughts on the subject. I don't ask many people that question even though i did teach the possibility back when i was a volunteer teacher.

IBdaMann wrote:

keepit wrote:
I tried to understand the Friedmann equation many times before i got a handle on it.
The density determines the curvature.

Nope. The density determines the ultimate fate of the universe.

If the density is sufficient then the universe will expand to a point, collapse inward on itself, i.e. become a collapsing universe, until all of the universe does Big Bang in reverse, collapsing into a singularity and then repeating the Big Bang all over again, and again, and again, ad infinitum.

If the density is insufficient then the universe will simply continue to expand until it dies a heat death, i.e. entropy reigns and no more work can be performed within the universe.



Like I said, there is only one type of curvature of space and it is caused by gravity which is caused by mass which Einstein showed is equivalent to energy.

keepit wrote:
Not trying sound snipey here but gravity has local and temporal effects and so do greenhouse gasses, i'.e., slow the movement of thermal energy toward outer space. That slowing results in the usual equilibrium between in coming radiation and outgoing radiation being interrupted until a higher temp (therefore higher outgoing) is achieved so that incoming and outgoing can be equal.

keepit wrote:
It's still the same old dispute here.
With a reduction in outgoing radiation the temp will increase if the incoming radiation stays the same.

keepit wrote:
Let's reduce the disagreement - hypothetically, would you think that temp would increase IF outgoing radiation decreased and incoming stayed the same?

keepit wrote:
My bet is that you will dodge this hypothetical.