On 6/12/2025 5:10 AM, Alan Grayson wrote:
On Thursday, June 12, 2025 at 5:36:15 AM UTC-6 John Clark wrote:
On Thu, Jun 12, 2025 at 4:49 AM Alan Grayson <[email protected]>
wrote:
/> The Newtonian postulate of inertia is inherently simpler
than the GR postulate of geodesic motion on curved spacetime/
*A good theory should be as simple as possible, _but not simpler_.
Newton couldn't explain or predict that starlight passing near the
sun will be bentby 1.75 arcseconds or that Mercury's orbit would
precess by 43 arcseconds per centuryor that gravity could produce
a redshift. But Einstein could. *
What do you think you've established? That GR is superior to NM? We
already knew that! But what we don't understand about gravity is truly
mind boggling, but only for those with imagination. AG
The problem is you don't even have a proper conception of
"understanding". You're like Faraday who conceived of the electric and
magnetic fields as lots of masses and springs. If it was just equations
it wasn't understood. It had to be masses and springs. When you saw the
infalling space model of gravity you thought it provided you
"understanding", but it wouldn't even allow for orbits. In graduate
school, if not earlier, physicists learn to let equations speak for
themselves. Examples are good to develop intuition. But every example
is incomplete. And every made-up visualization is misleading in some
respect. So think about what counts as "understanding". Knowing the
equations and how to apply them is the real understanding.
Brent
/> A lab atop a mountain sees the muons flying by, same as the
lab at rest on the Earth. /
*No it is not the same! I don't understand why you believe that
muons are always moving at close to the speed of light relative to
us. *
Where did I make that claim? Nowhere. Never. AG
*Muons are routinely made in the lab by smashing protons into
carbon, and they can be moving at any speed. And muons have a
negative electrical charge just like the electron so they can be
easily manipulated; in fact the muon is identical to the electron
except it is 207 times as massive and has a half-life of 1.56
*10^-6 seconds, which is very very long by particle physics
standards. *
So if we have two labs, one atop a mountain and another on the Earth's
surface, will they measure different half-lifes? AG
*
*
*John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
7x=
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