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tech / sci.physics.relativity / Re: Gravity Research

Re: Gravity Research

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Newsgroups: sci.physics.relativity
Date: Sun, 28 May 2023 19:56:28 -0700 (PDT)
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Subject: Re: Gravity Research
From: ross.a.f...@gmail.com (Ross Finlayson)
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 by: Ross Finlayson - Mon, 29 May 2023 02:56 UTC

On Saturday, May 27, 2023 at 10:46:27 PM UTC-7, Corey White wrote:
> This paper explores the intriguing interplay between high speeds,
> time dilation, and the perceived motion of objects. We investigate a
> scenario where two cars race side by side, with one car (Car A)
> moving at a velocity close to the speed of light, while the other car
> (Car B) maintains a relatively lower speed.
>
> Our analysis focuses on how time dilation affects the perceived
> outcome of the race and delves into the effects of extreme time
> dilation on the speed at which objects fall. By considering these
> phenomena, we aim to deepen our understanding of relativity and its
> implications for the perception of motion.
>
> In this study, we aim to shed light on the influence of time dilation
> on the perceived motion and outcomes of a high-speed race between two
> cars. We examine the scenario where Car A moves at a velocity close
> to the speed of light, while Car B maintains a relatively lower
> speed. As stationary observers, we eagerly observe the race,
> intrigued by the unfolding physics.
>
> Our analysis focuses on how time dilation affects the perceived
> motion and outcomes of such a race. Additionally, we investigate the
> impact of extreme time dilation on the speed at which objects fall.
> By exploring these scenarios, we seek to gain a deeper understanding
> of the fundamental nature of time dilation and its implications for
> various physical phenomena.
>
> The velocity of Car A leads to significant time dilation effects. Due
> to this high velocity, the internal clock of Car A appears to tick
> slower relative to the stationary observer, while Car B, moving at a
> relatively lower velocity, does not undergo substantial time
> dilation. The observed time difference between the two cars becomes a
> crucial factor in determining the race's outcome.
>
> To the stationary observer, Car A, experiencing time dilation,
> appears to be moving slower compared to Car B. This discrepancy
> arises because the observer's clock ticks at a regular rate, while
> the clock in Car A is dilated. Consequently, Car B, which is not
> affected by time dilation, seems to be progressing faster in the
> race. We can quantify the time dilation effect using the Lorentz
> factor, which relates the time observed by the stationary observer to
> the time experienced by the moving object.
>
> As the velocity of Car A approaches the speed of light, the Lorentz
> factor becomes increasingly significant, causing time dilation to be
> more pronounced. This amplifies the perceived speed difference
> between the two cars. Therefore, despite Car A potentially covering
> the same physical distance as Car B, the time dilation effect causes
> Car A to lag behind in the observer's frame of reference, resulting
> in Car B being declared the winner of the race.
>
> Furthermore, we explore the effects of extreme time dilation on the
> perceived speed at which objects fall. The specific behavior depends
> on the circumstances of the time dilation and the reference frame
> from which it is observed. In the context of objects falling, if
> extreme time dilation arises from high velocities relative to an
> observer, the falling objects may appear to descend at a slower rate.
> According to the principles of special relativity, as an object
> approaches the speed of light, its internal processes, including the
> ticking of its clock, slow down relative to a stationary observer.
>
> This time dilation effect causes the object's perceived motion to be
> slower relative to the observer. However, from the perspective of the
> time-dilated object itself, it experiences time at a normal rate, and
> its fall would appear to occur at the expected speed. Nevertheless,
> to an observer external to the time dilation region, the falling
> object would appear to move slower than expected due to the time
> dilation.
>
> By examining the impact of time dilation on high-speed racing and the
> perceived motion of falling objects, we contribute to our
> understanding of relativity and its implications for various physical
> phenomena. Further research can delve into the implications of time
> dilation in different contexts, leading to novel discoveries and
> deepening our comprehension of the universe.
>
> Additionally, it is worth mentioning that in the theory of general
> relativity, objects in free fall are considered weightless due to the
> equivalence principle. The equivalence principle states that the
> effects of gravity are indistinguishable from the effects of
> acceleration. Consequently, when an object is in free fall, it
> experiences no weight due to the balance between the gravitational
> force and its inertia.
>
> This principle provides a fundamental understanding of the behavior
> of objects in free fall and their weightlessness. When considering a
> scenario where an elevator is in free fall, the experience of a
> person inside the elevator and an observer on the ground differ
> significantly. From the perspective of a person inside the
> free-falling elevator, several notable phenomena come into play.
>
> The first is weightlessness, where the person experiences a sensation
> of weightlessness as the elevator undergoes free fall. This occurs
> because both the person and the elevator are subject to the same
> acceleration due to gravity. Without any support force acting on the
> person, they feel as though gravity is absent, resulting in a
> sensation of weightlessness. Inside the elevator, all objects and
> bodies are observed to be weightless. Objects float and can be easily
> moved around with minimal force.
>
> Although the laws of Newtonian mechanics still apply, the effective
> force of gravity is masked by the acceleration of free fall, creating
> the illusion of weightlessness. Furthermore, in free fall, both the
> elevator and the person inside experience the same acceleration due
> to gravity. This acceleration, typically denoted by "g" and
> approximately equal to 9.8 m/s² near the surface of the Earth, does
> not cause any noticeable sensation of acceleration for the person
> inside the elevator since they are in a state of free fall.
>
> The equivalence principle plays a vital role in the theory of general
> relativity by establishing a connection between gravity and
> acceleration. It consists of two main aspects: the Weak Equivalence
> Principle and the Strong Equivalence Principle. The Weak Equivalence
> Principle states that in a small region of spacetime, the motion of a
> freely falling object is independent of its mass and composition.
>
> This principle implies that all objects, regardless of their mass or
> composition, fall with the same acceleration in a gravitational
> field. It aligns with Galileo's observation that objects of different
> masses, when released simultaneously, would fall to the ground at the
> same rate in the absence of air resistance. The Strong Equivalence
> Principle extends the Weak Equivalence Principle further.
>
> It states that the effects of gravity are locally equivalent to the
> effects of being in an accelerated reference frame. Consequently, in
> a small region of spacetime, the laws of physics, including the
> effects of gravity, are the same for an observer in a freely falling
> reference frame as they would be for an observer in an inertial
> reference frame in the absence of gravity.
>
> The Strong Equivalence Principle suggests that gravity is not merely
> a force acting on objects but rather a curvature of spacetime caused
> by the presence of mass and energy. According to the theory of
> general relativity, massive objects like stars and planets cause
> spacetime to curve around them, and other objects move along curved
> paths in response to this curvature.
>
> Therefore, the equivalence principle implies that the experience of
> gravity can be understood as the effect of being in an accelerated
> reference frame in curved spacetime. It provides profound insights
> into the nature of gravity and forms the foundation of Einstein's
> general theory of relativity, which describes gravity as the
> curvature of spacetime caused by matter and energy.
>
> Particularly, the Strong Equivalence Principle suggests that being in
> an accelerated reference frame is equivalent to being in a
> gravitational field. Now, let's explore the behavior of gyroscopes. A
> gyroscope, a spinning object with angular momentum, exhibits a
> property known as gyroscopic stability, enabling it to maintain its
> orientation in space even when subjected to external forces.
>
> When a gyroscope spins rapidly, it possesses significant angular
> momentum, which influences its behavior when subjected to
> gravitational forces. When a gyroscope is dropped vertically, gravity
> exerts a torque on it due to its asymmetrical shape and the force
> acting on its center of mass. However, the gyroscope's angular
> momentum resists this torque, causing it to precess.
>
> Precession refers to the change in the direction of the gyroscope's
> axis of rotation instead of falling straight down. As a result, the
> gyroscope appears to fall more slowly compared to an object without
> angular momentum, such as a rock falling in a linear downward
> trajectory. The high spin rate of the gyroscope increases its angular
> momentum, enhancing its gyroscopic stability.
>
> This stability counteracts the gravitational torque to a greater
> extent, leading to a slower apparent fall. The discovery that falling
> gyroscopes can fall slower than other objects is attributed to a
> physicist named Thomas Precession Searle. In the early 20th century,
> Searle conducted experiments involving rapidly spinning gyroscopes
> and observed their behavior when dropped from a height. He noted that
> the gyroscopes appeared to fall more slowly than expected, exhibiting
> a precession or circular/helical motion during their descent.
>
> When the effects of gyroscopic stability and time dilation combine,
> the effect of the gyroscope's gyroscopic stability and time dilation
> can lead to an even slower apparent fall compared to both
> non-rotating objects and objects not subjected to time dilation. One
> experiment I have done with gyroscopes is to take a heavy wheel on a
> long axle. While the wheel is spinning, the axle is rotated in a
> circle. This will cause the wheel to lift up in the air pointing
> vertically away from the earth, which in itself is amazing.
>
> If the wheel or the axle rotates in the opposite direction, the heavy
> wheel will point firmly to the ground and be too heavy to lift. The
> effect happens in reverse in earths southern hemisphere (like water
> going down a drain). And if you preform the experiment in a free
> fall, the wheel on the axle will stay level & won't point up or down
> at all.
>
> To understand why this occurs I tried asking chat gpt. It broke it
> down like this:
>
> Angular Momentum: When the heavy wheel on the long axle spins
> rapidly, it possesses a significant amount of angular momentum.
> Angular momentum is a property of rotating objects and depends on
> both the mass and distribution of mass around the axis of rotation.
> The fast spinning of the wheel creates this angular momentum.
> Torque: When the axle is rotated in a circular motion, it applies a
> torque to the spinning wheel. Torque is a twisting force that tends
> to cause a change in rotational motion. In this case, the torque is
> applied perpendicular to the axis of rotation of the wheel.
>
> Gyroscopic Stability: Due to its angular momentum, the spinning wheel
> exhibits gyroscopic stability. Gyroscopic stability is the property
> of a spinning object to resist any external torque that tries to
> change its orientation. This resistance to torque is what allows the
> gyroscope to maintain its stability and direction of rotation.
>
> Gyroscopic Precession: When the axle is rotated, the torque applied
> causes the spinning wheel to precess. Precession is the phenomenon
> where the axis of rotation of a spinning object changes direction in
> response to an applied torque. In this case, the applied torque
> causes the gyroscope's axis to change its direction of pointing. The
> direction of precession is determined by the interaction between the
> applied torque and the existing angular momentum.
>
> The precession follows a right-hand rule: if you imagine the
> direction of the applied torque vector, the resulting precession will
> be in the direction perpendicular to both the torque vector and the
> angular momentum vector. When the wheel is spinning in one direction
> and the axle is rotated in a particular direction, the torque and
> angular momentum vectors align in a way that causes the gyroscope to
> lift up, pointing vertically away from the Earth.
>
> When the wheel or the axle rotates in the opposite direction, the
> torque and angular momentum vectors align differently, resulting in
> the gyroscope pointing downward, towards the ground.
>
> The reversal of this effect in the Earth's southern hemisphere is not
> related to the gyroscope itself but rather to the Coriolis effect.
> The Coriolis effect arises due to the Earth's rotation and can affect
> the behavior of rotating objects.
>
> The Coriolis effect causes the direction of rotation to appear
> reversed when observed from different hemispheres. This effect
> influences phenomena such as the rotation of weather patterns and
> ocean currents.
>
> In a free fall or microgravity environment, such as during space
> travel or inside a freely falling elevator, the gyroscope would not
> experience the same gravitational torque as on Earth's surface. As a
> result, it would not exhibit the lifting or pointing behavior you
> described, and the gyroscope would stay level without pointing up or
> down.
>
> You can watch the experiment online here:
> https://www.youtube.com/watch?v=GeyDf4ooPdo

Sorry, if you're using unquoted "ChatGPT" output it's figured you don't really
know or have command of the content.

It's considered a matter of scientific and literary integrity that sources are
not _copied_ only _referenced_ and that it's _annotated and clear_ any
such _liftings of copy_, it's called _bibliographic reference_.

This is to protect you and the sources both, you from their mistakes and
them from your plagiarism, then also to protect your readers from your
plagiarism and that they don't unknowingly accept stolen goods.

(Figuring that they'd protect themselves from knowingly accepting
stolen goods.)

So, by know the MLA or Chicago style or somebody should have a standard way to
quote "ChatGPT", it's called not being a plagiarist or misrepresentation.

https://style.mla.org/citing-generative-ai/

Then, you'd probably also want the "ChatGPT" to quote and cite _its_ sources,
but, it's a sort of delinquent that plagiarizes and misrepresents.

So, you should probably include the entire contents of your "ChatGPT" session
as a sort of appendix, so that reviewers can diff it.

Otherwise it'd be said if somebody asked you what you meant and you went "I dunno, ...".
It'd really run the risk of making you look like an idiot and having misrepresented what
are the works of others, and ruin your reputation.

Some people really believe in "fake it 'til you make it", they're called frauds.

So, you can write a _citation_ for "ChatGPT" output, but it's not really considered
a "bibliographic reference", because, it doesn't provide them.

SubjectRepliesAuthor
o Gravity Research

By: Corey White on Sun, 28 May 2023

8Corey White
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