Intriguing question about Time, Physics and SRT in general

what you fail to realize is that the concept of NOW as you call it doesn't exist in the light cone diagram [ it is after all an imaginary zero point - an abstraction... there is no "moment" between past and future...]

 

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I don't know what "HSP" stands for, but no: events by definition have zero duration and that has nothing to do with absolute rest.

 

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Who's talking about Newtonian space time? If you want to by all means but please don't confuse the two..... absolute rest is forbidden in Minkowski/Einstein space time...

very funny video , thanks... gotta have gut man...an balls...!

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hsp = hyper surface of the present as described in the light cones...and it has everything to do with "no absolute rest" IMO

 

But there is something new about saying nothing exists beyond the event horizon, just because you might not be able to detect it until later in the future.

 

Still waiting on CptBorks consistent definition of the term "energy"....

 

try this:

the HSP is on the "boundary" between future and past,. saying that it is a zero duration point or plane doesn't mean that a future is not possible. It is simply suggesting that the observer and his universe is "as existent as the point is"...

It is not new... I think you will find with out doubt that it is very well catered for but there is an intriguing aspect when relating it to quantum entanglements. [and that may be new although most of the research is kept rather tight lipped as far as I can tell...]

 

That's all wrong too. "Now" can be any time we choose in the diagram, depending on the particulars of what is being described.

I think origin is right: this is a problem with you understanding of basic math. A line contains an infinite number of zero dimension points.

 

Energy: A quantity which defines the potential for a force to be applied over a given distance.

 

That's trolling.

 

I'm anticipating that his next post is going to object that particles at rest have an energy equivalence, \(E=mc^2\), and protest that my definition isn't consistent with energy of this form. My response will then be that \(E=mc^2\) is derived directly from the definition I gave above, and that he'd know this himself if he'd bothered to actually learn the details of the theory instead of scratching the surface and then making mindless assertions about it.

 

Wrong! [ that my response would involve \(E=mc^2\) ]
Gosh you guys are hyper tense...
I asked for a consistent definition of the term energy... that applies across all fields of science...

and actually what you offered comes way better than what is often offered...

/Edit: I see that they updated the wiki... and removed R Feynmans quote.

 

He's hijacking his own thread to distract from his wrongness.

 

ha ...my God, hijacking my own thread...

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"wrongness" sounds a bit middle ages theosophical to me...

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not at all... we are talking about physics and not mathematical abstractions only.

 

Well I'm honestly glad you like my definition, but I'll insist that anyone who learns mechanics on a rigorous level, including the mathematics, is given the following basic definition for the energy ("work") expended in applying a force to an entity: \(W=\int \vec{F}\cdot\vec{\mathrm{d}x}\). It's one of the first things they taught me in my first freshman mechanics course, and it says the same thing as my plain English definition, and then some. In fact, to be honest, the definition I gave you in English wasn't even as good as the mathematical one they taught me in my final year of junior high, or the slightly better one I was taught in my first year of high school.

This is one reason you simply can't skip the math if you want to learn the real science and precisely what it does and doesn't imply. It's a well-understood fact that nature at its fundamental level behaves according to consistent mathematical principles and patterns, and if you try to describe it in any other language, things get lost in the translation and you end up with all kinds of laymen arguing with each other based on their understanding of what their favourite pop scientist said on TV. Without the math, you have no means of evaluating the logical consistency of a physical theory and no means of determining precisely what happens when you conduct a thought experiment.

Now it's your turn. You promised you would try to answer my questions about your knowledge of Minkowski spacetime as it applies to light cones, and I'm still waiting on my own part.

 

Exactly: you don't even know what subject you are wronging!

 

Oh I appreciate your concerns about the precision needed.
however you did define it as:

and now you state that:
"energy is "work" done or being done"... this is not the same as a potential to do work...

see? the point is consistency in the definition of the term.


The R Feynman quote they removed from the original wiki article was mentioned by a poster to this thread:
http://www.sciforums.com/showthread.php?114726-Energy-What-is-it&highlight=energy+what
when I asked more or less the same question but did refer to E=mc^2.

We then have to reconcile "blogs of energy" floating through space in the form of photon particles/waves at an invariant speed of 'c' and how energy is massless but has the ability to exist independent of mass... and so on..

So I am not to convinced about your definition of energy [ which I happen to think is closer than most ] as the theoretics in vogue at the moment appear to confuse the issue a bit and so what .. any way...
In fact if I posted a thread using the definition you gave it would suffer more flame than this one..IMO

 

QQ really seems to be jumping from subject to subject misrepresenting math and phyisics with the express goal of annoying people. Very trollish behavior it would seem. It could be that he really is utterly confused about the most basic level of these subjects, but I think it is more his desire to annoy that is driving this discussion.

 

you call this thread a discussion.. you are kidding surely!?