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Letter to Brian Keating:
If possible, please resolve my problem understanding Newton’s Bucket and its consequences
for modern theoretical physics.
NB was a problem for Newton. In the Principia he noted that application of his second law of
motion reified to centrifugal force correctly predicted the surface vortex formation for a lab
observer, but not for a bucketeer …..one attached to the bucket.
Newton proposed invoking an abstraction of an absolute space, wherein the laws of
physics(dynamics) would be effective. But he never identified in real space where this absolute
ref frame was situated and thus allow for mandated methodical testing.
Mach & Berkeley said that the cause of water motion was its moving relative to the Earth and
distant stars.
An internet solution states that only the Earth/lab frame applies in dynamics, resolving the NB
paradox. .
The NB question was submitted to Bribot.
What’s the explanation of Newton's Bucket?
Bribot response:
Ah, the Newton's Bucket experiment is a thought experiment proposed by Sir Isaac Newton to
demonstrate his theory of absolute space. In this experiment, a bucket of water is suspended
from a rope and set spinning. Newton argued that the concave surface of the water in the
spinning bucket remains flat due to the rotation of the bucket relative to the absolute space. This
concept was used by Newton to support his idea of absolute space, which is a fixed and
unchanging reference frame against which all motion can be measured.
RB: How can the concave surface….remain flat??? …Can make sense if the AI hallucination
‘remains flat’ is replaced by “is”.
Absolute space is a math abstraction. But measurement of motion is done in real physical
space.
(Realism is my philosophical epistemology supporting the sci method.)
The Earth/lab/ECEF ref frame is inertial; the bucket RF is non-inertial. The rotating bucket could
be anywhere in the universe and the centrifugal force would still be computed as zero…and still
wrong.
So…the Earth seems to be the only universal inertial frame [ …a ref frame in which the laws of
dynamics are valid.]
Comment?
I’m glad Mach’s principle wasn’t cited by Bribebot….Google AI says ‘Mach's principle is
controversial, with disagreements over its interpretation, validity, and value.’… ‘a vague principle
interpreted in many different ways.’ Total agreement.
A follow-up question.. How can Newton’s absolute space be tested?
Bribot response
Ah, testing Newton's concept of absolute space is quite challenging. One way to test it would be
to look for violations of the principle of inertia, which is a key aspect of Newton's absolute space.
If we observe any deviations from the principle of inertia in certain scenarios, it could indicate
that absolute space as envisioned by Newton may not be entirely accurate. However, it's
important to note that Newton's concept of absolute space has been largely superseded by
Einstein's theory of relativity, which provides a more comprehensive framework for
understanding space and time.
RB: More precise testing would be valid for all of experimental physics and apply to any
question posed. But the NB issue here is an invalid prediction based on laws of motion, not
what precision is needed to detect violation of physical law. After all, the bucketeer computes
zero CF…. a prediction, not a measurement!
Absolutism and relativity are logical contraries. Relativity is a mathematical truism which applies
in kinematics, thus excluding absolutism in relativity.
However, NB is a dynamics issue, an instance of the failure of physical laws of motion, not
kinematics, the measurement domain of relativity. Measurement of the water motion agrees in
both Lab and Bucket Ref Frames.
Dynamic projection of future motion is invalid in the bucket RF; valid in the Lab frame.
Tests of ref frames orbiting Earth or in linear motion wrt Earth generalize the NBX result to
universal law so as to apply to all motions in the cosmos.
This establishes absolutism (of the Earth observer’s predictions) over any other observer’s ref
frame.
How has Newton's concept of absolute space been largely superseded by Einstein's theory of
relativity?
Bribot:
Newton's concept of absolute space, where space is considered to be a fixed and unchanging
background against which all motion occurs, was a foundational idea in classical physics.
However, Einstein's theory of relativity revolutionized our understanding of space and time.
1)In Einstein's theory of relativity, space and time are no longer separate entities but are unified
into a four-dimensional spacetime. This spacetime is not fixed but can be curved by the
presence of mass and energy, leading to the bending of light and the warping of trajectories of
objects.
2)Einstein's theory also introduced the concept of relative motion, where the laws of physics are
the same for all observers regardless of their relative motion. This means that there is no
privileged reference frame in the universe, challenging the idea of absolute space.
Overall, Einstein's theory of relativity replaced the notion of absolute space with a more dynamic
and interconnected view of spacetime, fundamentally changing our understanding of the
universe.
RB: #2 …SR postulate 1 is contradicted by plentiful counter-tests , including the NB, the hiker
and accelerating car, free fall and downhill biker examples. Again, the Earth is the privileged ref
frame in the universe, the only frame in which the laws of physis are valid.
Multiverse Cosmology, Nobel Laureates, Theories Of Everything, And Much More! - Dr. #BrianKeating Ph.D., Chancellor’s Distinguished Professor of Physics, UC San Diego #ProgressPotentialAndPossibilities #Physics #BigBang #Inflation #Cosmology #CosmicMicrowaveBackground #CMB #Aliens #Extraterrestrials #NobelPrize #Life #Consciousness
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Why Size Matters | Brian Keating & Lex Fridman https://t.co/G2MxG9h6aq via @YouTube I love these guys!! #Lex #BrianKeating
Subject: : Source of neutrinos.
Source: Into the Impossible With Brian Keating.
Francis Halzen:
Catching Neutrinos at the South Pole
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There is no dearth of ‘successful’ life coaches these days. But then why should we learn these skills from physicists specifically? writes @ArunAnandLive
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