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James Snover

James Snover

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Guys, what the Hell? Where is Smackdown? I was only gone a few months. I've finally got something Smackdown-worthy, now I can't find if??? What? Is his the kinder, gentler SVTP?

Oh well. Anyone got any Relativity (Special or General, it's all good! ) or Cosmology related questions? How about those gravity waves, huh?


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SecondhandSnake

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OP is a...
















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Didn't you hear? Biden issued an executive order banning smackdown.
 
LuuisHernandez

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Which do you think better describes the universe and its workings: relativity or quantum mechanics?


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James Snover

James Snover

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LuuisHernandez said:
Which do you think better describes the universe and its workings: relativity or quantum mechanics?


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Both. Neither should be seen as an all-inclusive answer to how the universe works. The one, Relativity, was formulated before anyone knew much of anything about the universe at sub-atomic levels. The other, quantum mechanics, was formulated to describe specifically how matter behaves at the sub-atomic level. Both work great until you get to the edges of the theories and both start producing infinities. Both theories, like all good theories, are strictly limited in their scope of what they describe. General Relativity, our best theory of gravity, only describes what gravity does, how it behaves, what you can expect; but never mentions what gravity is, or what causes it, or why it's even there. That's beyond its scope. Quantum mechanics describes how matter behaves at the sub-atomic level, what you can expect, how you can predict things. Never says why or how any of the quantum weirdness happens.

On the one hand I think the guys working like mad on Quantum Relativity are going up a dead end street, but I have hope they'll find something, even if only another little clue or observation of the way this whole universe works.
 
James Snover

James Snover

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03cobra#694 said:
I was wondering where you've been.
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Fixing x-ray machines in the cath labs, and robotic x-ray machines in the OR. I loved the job before, high-voltage, ionizing radiation, the last profession where we still use vacuum tubes. Then they lashed it all up on a six-axis robotic arm and now I can't get enough of it!
 
CobraBob

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Welcome back, James. I does sound like you were born for the work you do. Loving your job to that extent is extraordinary.
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earico

earico

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James Snover said:
Fixing x-ray machines in the cath labs, and robotic x-ray machines in the OR. I loved the job before, high-voltage, ionizing radiation, the last profession where we still use vacuum tubes. Then they lashed it all up on a six-axis robotic arm and now I can't get enough of it!
Click to expand...
Very cool stuff, James. Using that smart nogg'n of yours. Friend of mine runs the Cyber Knife in Vegas. He plots the radiation treatment and then the robot executes the plan. He showed me the machine and how they calibrate it. Some badass tech. He said the software has a large chunk of code from the Patriot missle's tracking program. They treat patients in inoperable locations. Sometimes even on moving organs.
 
LuuisHernandez

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James Snover said:
Both. Neither should be seen as an all-inclusive answer to how the universe works. The one, Relativity, was formulated before anyone knew much of anything about the universe at sub-atomic levels. The other, quantum mechanics, was formulated to describe specifically how matter behaves at the sub-atomic level. Both work great until you get to the edges of the theories and both start producing infinities. Both theories, like all good theories, are strictly limited in their scope of what they describe. General Relativity, our best theory of gravity, only describes what gravity does, how it behaves, what you can expect; but never mentions what gravity is, or what causes it, or why it's even there. That's beyond its scope. Quantum mechanics describes how matter behaves at the sub-atomic level, what you can expect, how you can predict things. Never says why or how any of the quantum weirdness happens.

On the one hand I think the guys working like mad on Quantum Relativity are going up a dead end street, but I have hope they'll find something, even if only another little clue or observation of the way this whole universe works.
Click to expand...

I love quantum gravity and watching quantum field theory struggle to explain it. Like you said, there is only so much that can be studied or, for larger, denser masses, replicated at our scale — and perhaps gets even worse at the atomic level.

That is one thing is frustrating about it; there is will always be a limit to what one can realistically learn or discover with our limitations.


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