Good references thanks. I think I get it, extrinsic meaning within the "framework" so to speak provided by s-t, vs gravity which affects the framework/s-t itself. As always I appreciate folks' patience with us curious laymen.
Hmm, that sounds like What's the difference between hot and cold? Well, hot is the one that melts ice cubes. The question is, WHY does hot melt ice cubes. Point being, what is it about the magnetic case that's different from the gravitational case? Maybe that's the big question - why does...
By comparison, shooting a bullet at the Earth from a distant galaxy around a giant magnetic sun would also curve the bullets path. But that curving would be different from what we're talking about here because...?
Here's the link, it's post 4: https://www.physicsforums.com/threads/what-does-curvature-of-spacetime-really-mean.196359/
I guess that agrees with what folks have posted here?? It probably gets into speculation to ask why it's NOT a curvature into a fourth spatial dimension.
Here's what I read in a closed thread asking about the meaning of spacetime curvature:
So does that mean if we were able to move to some spot "way above the earth/sun/distant galaxy" where we could watch light and trace it from a distant galaxy (which is otherwise hidden from us) pass around...
Okay that makes sense. And that doesn't seem so complex an idea that it couldn't be included in various books about the subject for laypeople.
Follow on - what would it look like IF the bound systems themselves were expanding too (but such that we could still use them for measurement) but some...
Great discussion and I really appreciate your patience with us laypeople. The thing that always confused me was that the expansion is always described as NOT being like a balloon expanding within a large room so to speak. The room/balloon/all-there-is itself is expanding. To me that means the...
My favorite is ASP. When MS came out with Active Server Pages (vs dumb lazy ones I guess) we were told how cool it is to mix code and markup. And everyone ran that way. Then MS wanted to push another product, .NET, and then we were told, don't be stupid. Mixing markup and code on the same page...
Thanks for the link, extremely well written and well explained for laymen like me. One thing he mentions that is fascinating, is that evidently there are no "sharp edges" to protons. It really makes me wonder exactly what the LHC is colliding. Tiny balls of cotton it seems like made of even...
If I'm reading this thread right, Drakkith says "the idea that it's a composite particles made up of more fundamental elements is the real takeaway here" and mfb says "A proton doesn't have a substructure in the way the solar system has" which seems to be the exact opposite. Which is it? Is...
I googled just fine, but most of everything I found simply explained WHAT it was, not how he arrived at it, the nitty gritty. I knew of Galileo's experiments, but didn't know enough to draw the connections. I just assumed Newton did something similar but better, more refined. But the responses...
If a proton is made of quarks and gluons, what exactly IS a proton? What would it look like if we could shrink down to it's size? Is it really nothing at all, in the same sense as the "solar system" isn't really a thing in itself, it's just a collection of planets and a sun.
Thanks but you've just restated the math and derivation based on math and theory. I'm asking about how, physically, he did the experiments. Did he place a chunk of metal on a table. Then did he move it with his hand, pull it with a spring, with a clock on the desk? Did he write down the amount...
I did some googling but only found nothing to answer my question. How did Newton come up with this formula, literally/physically? Did he have chunks of stuff and moved them around, then logged various results. Then maybe he played around with various formulas and saw which fit the data?