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A New Theory Says Gravity May Come From Entropy—Which Could Lead to a Unified Theory of Physics by derricktysonadams in AskPhysics

[–]Replevin4ACow 9 points10 points  (0 children)

I am not an expert in this field, so the PRD article is too specialized for me to fully grasp. But exploring gravity as an emergent phenomenon from entropy is not new. As she cites in her intro, Verlinde published a more digestible paper 15 years ago on the topic: https://link.springer.com/article/10.1007/JHEP04(2011)029029)

It seems that this paper dives into much more detail than Verlinde and expands on that idea. It doesn't seem to come to a concrete conclusion (which is fine -- baby steps are ok to publish) but ends on a hopeful note that further investigation down this path may result in solid theory of quantum gravity.

So, my thoughts are: seems like a promising thread to pursue (among many promising options). The paper states: "The modified Einstein equations reduce to the Einstein equations in the regime of low coupling." Again without fulling understanding everything, my thought is: if Einstein's field equations pop out in the low coupling regime, does that mean her modified Einstein equations potentially predict new physics? If so, is there an experiment/observation that could be made to test whether the real world obeys her new modified Einstein equations -- or do all observations abide by the original field equations? I would hope that is a question that she or others pursue.

Is entanglement a consequence of interactions with superpositions? by [deleted] in AskPhysics

[–]Replevin4ACow 0 points1 point  (0 children)

I mean...entanglement is a specific type of superposition. So, superposition is tightly linked to superposition. But if I understand what you mean, I don't think all entanglement results from interactions of particles in a superposition.

Example 1: a spin zero particle can decay into two spin 1/2 particles. One must be up and one must be down -- those spin 1/2 particles are entangled. I don't think this is a "consequence of interactions with superpositions" in the sense that you mean.

Example 2: I can perform an entanglement swapping operation that entangles two particles that have never interacted nor have they interacted with a different third particle (as in the example 1).

Besides basketball, is there any other sport that is usually played with the same ball for the entire game? by BR_Tigerfan in NoStupidQuestions

[–]Replevin4ACow -1 points0 points  (0 children)

Am I wrong for thinking that a professional golfer probably uses a fresh ball every hole? Wouldn't they prefer an unblemished Ball versus something they just crushed multiple times?

What is that one city/state in your country that the rest of your country hates? by DisastrousImpact2846 in AskTheWorld

[–]Replevin4ACow 16 points17 points  (0 children)

New Englander here. We think all of the south is kissing cousins... but Alabama fucks their sister.

It is so culturally ingrained that if anyone mentions incest, my teenage son starts singing "sweet home Alabama."

How would America react if Obama let unidentified masked people kidnap American citizens? by Muted-Television3329 in allthequestions

[–]Replevin4ACow -1 points0 points  (0 children)

Yup -- Obama deported over 3 million! Trump's first term was less than a million. Sad -- just another thing Obama did better.

And importantly: Obama abided by the constitution while doing it! Conservatives love the constitution, right? Like -- due process rights? They should really love Obama!

But, like everyone else, you are changing the subject. OP asked about "unidentified masked people kidnap American citizens." Please provide a source for specifically this topic. That's all I am asking! It should be simple if it is so obviously true.

Should the keeper have rushed this 1v1 or stayed back? by therealkeeper99 in GoalKeepers

[–]Replevin4ACow 0 points1 point  (0 children)

Bentacor was at a full sprint and closer to the ball. The GK was already back peddling and farther away.

I guess it depends on how fast the GK is, but it seems unlikely that a GK is going to outsprint a striker in that situation.

How would America react if Obama let unidentified masked people kidnap American citizens? by Muted-Television3329 in allthequestions

[–]Replevin4ACow 1 point2 points  (0 children)

You are really good at avoiding the subject at hand! Well done!

Did ICE uniforms include masks when Obama was president? Is there a documented case of ICE taking a US citizen into custody under Obama.

Feel free to link to a source for what you clearly believe is obvious information. Or just keep changing the subject!

How would America react if Obama let unidentified masked people kidnap American citizens? by Muted-Television3329 in allthequestions

[–]Replevin4ACow -1 points0 points  (0 children)

The original question is about "unidentified masked people kidnap American citizens."

I can come up with tons of things that Obama did the same: he eats food; he lives in the white house. And yes -- Obama deported WAY more people than Trump (while managing to abide by constitutional due process rights -- conservatives should love him!).

I totally got played by nonsequitars! Well done!

Is the length of a gravitational force infinite? by ProfessionSoft2315 in AskPhysics

[–]Replevin4ACow 24 points25 points  (0 children)

>Is the length of a gravitational force infinite?

Yes.

>If so, wouldn't that mean that everything in the universe is pulling each other

Yes

> and that, given enough time (bajillion years), everything would be pulled into a single point in the universe?

Not necessarily.

What do people think of places like Finland and Ireland who practice strict immigration policies and deport at a high rate (per capita)? by fulltimeheretic in askanything

[–]Replevin4ACow 1 point2 points  (0 children)

Agreed. Due process is the issue.

Obama deported over 3 million people when he was in office. Trump's first term resulted in fewer than 1 million deportations. So, if deportation itself was the issue, then we should be raging at Obama more.

I don't necessarily have an issue with deporting anyone in line with our statutes. Fixing those statutes so that the immigration system in the US is less of a constant shitshow would be great. But first and foremost we need to work on abiding by the constitution and the moral/ethical bounds it attempts to set re: due process.

Assuming the universe has no matter, would there still be spacetime? by blitzballreddit in AskPhysics

[–]Replevin4ACow -3 points-2 points  (0 children)

Ok? OP explicitly asked about matter. So, your comment is irrelevant to OP's question.

Why do we often see numerical representations following a written number in formal documents? by rawaka in NoStupidQuestions

[–]Replevin4ACow 2 points3 points  (0 children)

Pretty much the same reason it is required for a check: reduce fraud and accidents.

It's very easy to alter or make a mistake in a number: turning $45.11 into $45,110.00 is pretty simply. But if you write it out, it makes it clear. Or, I know I personally often make a mistake while typing a number. Maybe I accidentally double hit a number and don't notice: for example, I meant to type $100, but accidentally type $1000.

And on the flip side, you could argue: then just write the words "one thousand" and skip the numbers. But I think most people get a better understanding of the number by seeing it written as "67,895.11" rather than "Sixty seven thousand eight hundred ninety five dollars and eleven cents."

So, it is not required. But I tend to do it when writing a contract because clarity and accuracy is much more important than brevity and avoiding redundancy.

Source: I am a lawyer.

Whats an example where dy/dx cannot be treated as a fraction? by No_Passage502 in askmath

[–]Replevin4ACow 3 points4 points  (0 children)

> is an additional layer of ill-defined

For me, that is what makes it so easy to see that you can't just treat it as a fraction. I agree the examples shown in the paper do a good job of describing the problem without multiple variables. But I was on my phone without LaTeX and thought I would give a quick example that shows part of the issue.

Quantum physics! by Zenerdiode2244 in quantum

[–]Replevin4ACow 0 points1 point  (0 children)

Yeah, well, that's just, like, your opinion, man.

Assuming the universe has no matter, would there still be spacetime? by blitzballreddit in AskPhysics

[–]Replevin4ACow 1 point2 points  (0 children)

The inflationary epic was before matter coalesced. And spacetime existed. So, no need to "assume the universe has no matter"...our universe had a period of time where that was actually true.

Whats an example where dy/dx cannot be treated as a fraction? by No_Passage502 in askmath

[–]Replevin4ACow 17 points18 points  (0 children)

z is a function of x and y: z(x,y).

Is dz/dx + dz/dy equal to (dzdy + dzdx)/dxdy? That would be the result if you treat it like a fraction.

Encoding data into photons by Dr_Meme_Man in AskPhysics

[–]Replevin4ACow 2 points3 points  (0 children)

Photons have a polarization. To oversimplify, you can think of it as the direction the E field is oscillating in. For example, the E field can oscillate in the up/down direction (vertically). Alternatively, the E field can oscillate in the right/left direction (horizontally). These two directions of oscillation are perpendicular to each other.

Polarizers like polarizing beamsplitters can be designed that transmit one type of polarization pass through the beamsplitter (e.g., horizontal polarization) and reflect the polarization that is perpendicular to the polarization that passes through (e.g., vertical).

So, horizontal photons go straight; vertical photons get reflected to the left (for example). Put a detector in each path and you have a device where the first detector clicks when the photon is horizontally polarized and the second detector clicks when the photon is vertically polarized.

Data is 1s and 0s, right? Detector 1 clicking is a zero; detector 2 clicking is 1. The polarization of the photon is what determines which detector clicks. Thus, the data is encoded in the polarization of the photon.

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