Recent content by Fubini

I'm doing some senior research into caching algorithms. In order to effectively evaluate some of our algorithms it would be amazing if we had access to physical addresses sent from the CPU to the memory captured in real time under real operating conditions. Does anyone know of a place that might...

Forgive me if this is not the proper place to pose this question. The question isn't that I'm having trouble solving a problem as that I'm having trouble finding reliable sources for research. Homework Statement I'm doing a research paper over verifying identity remotely, a topic that...

I'm not an expert, but there are various mathematical theories that say that time-travel is possible, but those are not realizable because of physical concerns like practical generation of energy required. There are some people looking into building signaling devices, so that even if you...

When we look at this tensor do we consider a volume element and consider how it changes in time, like divergence? Or, would we keep a static volume element and consider how the energy inside the volume is changing?

What is a good intuitive way to think of the stress-energy tensor outside of Einstein's Ric-(1/2)Sg = 8pi T? I'm trying to understand the concept, but coming entirely from a math background I'm not quite getting it.

What is the accepted view of spacetime? Do we think we really live in a four-dimensional spacetime, or is it accepted that we live in a three-dimensional space but where four-dimensional spacetime is the correct way to model causality?

You might try posting this in the General and Special Relativity forum, as this is more their kind of thing. I think the construction of a time machine would be necessitated by how it operates. (and how it operates in your narrative) For example, can you be sure the time machine won't pop...

Wow, thanks. Funny that stuff doesn't come up when you search "Java USB library".

I have a odds and ends question for anyone who wants to share knowledge. I just got done with a project doing serial port programming, and I want to take what I learned and expand that. Is there any environment that is more or less a sandbox for USB communications? If you're familiar with...

I used to be pretty handy with the TI-83+, and I can tell you for certain that programming for the TI-86 or TI-89 is totally different, the command syntax is different, the variable names are different, the memory allocation is different. Everything is different. Don't let that discourage you...

Hmmm, many good things to think about. Thank you very much.

Forgive me if this has been posted before, but looking through a page of search entries I found many topics that were related, but none that asked quite the same questions. I actually have two questions, but I feel they must be related. I hope you bear with me as I come to the subject from a...