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Questions tagged [physics]

Physics is the natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.

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Deterministic or stochastic universe?

Just a little bit before my graduation from computer science, I attended a course about computational intelligence, and my professor then challenged us to debate on whether the world/universe follows ...
GGEv's user avatar
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What's the "opposite" of emergence?

What do you call the phenomena that occurs when smaller entities are observed to have properties the wider whole do not have, properties or behaviors which emerge only when only the constituents are ...
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What would a fractal universe tell us about Time?

To begin with let's look at what is known as the coastline paradox. Briefly it goes like this: If you measure the circumference of Britain with a 1km long stick, and then do the same with a 100m long ...
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Philosophy - Does the block universe theory of time mean that life will repeat after death?

I have suffered severe anxiety, sadness, regret, and depression since I was 13, I had 2 trapped-feeling panic attacks when I was 13 I am now 17 and fighting off frequent urges to have a trapped-...
user202315's user avatar
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1 answer
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Why do philosophical discussions of the teleportation paradox seem to ignore the physics involved?

When I read philosophy treatments of the teleportation paradox and related subjects like swampman, they seem to focus primarily on drawing analogies to various entirely different scenarios (...
Kevin's user avatar
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Are mathematical suppositions of physical theories determined uniquely according to Aristotle and Plato?

Does mathematics apply to physics in one way or multiple ways? What do Aristotle and Plato think? It would seem that Aristotle thinks mathematics can be applied to physics in one way only because, ...
Geremia's user avatar
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15 votes
10 answers
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How much philosophy should a physicist know?

I began to read Hawking's recent book 'A Grand Design' some time ago and noticed that he savages philosophy. He says '...philosophy is dead. Philosophy has not kept up with modern developments in ...
Mozibur Ullah's user avatar
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7 answers
7k views

How can I develop my critical thinking skills?

I am a freshman engineering student going to college. I want to learn how to think critically and to become a critical thinker and a sharp arguer. I am interested in philosophy, because I am curious ...
2 votes
3 answers
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Can the Universe make sense at all?

Considering that nearly everything that exists cannot be even imagined by humans (or would it be reasonable to assume the contrary?), what is the chance of finding a scientifically coherent ...
user1975053's user avatar
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3 answers
688 views

How does biological evolution work in the block universe/b-theory of time?

The b-theory of time is often described as a film reel where the whole reel exists, but we can only view one frame at a time. The problem I have with this analogy is that it starts to feel too ...
Physeo's user avatar
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A terrifying variant of Boltzmann's brain

I am new to this forum even though I have read a lot on the subject of boltzmann's brains and have come to a terrifying conclusion, the classic argument which for example Sean Carroll used, "The ...
Zeruel017's user avatar
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Order/disorder and complexity

What is the relation between order/disorder and complexity ? Sometimes I found the terms confusing and ambiguous. And higher entropy implies low complexity, does not implies low entropy implies higher ...
quanity's user avatar
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Is all change movement?

Is there a change in the universe that cannot be reduced to movement? One counter-example should be enough. :) Heat is a type of change that was once thought to be qualitative, but is now realized to ...
Olle Härstedt's user avatar
6 votes
9 answers
338 views

One big theory of Everything (TOE) or multiple "domain specific" theories?

It's common to hear that physicists are trying to find a Theory of everything (TOE). We "logically" consider the more elegant / concise theory as true ... because beauty is thruth ... or is it ? What ...
kondor's user avatar
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How do we learn math and science?

I was wondering how we actually learn math and science (physics). Some people say that it is important to "understand" the formulas/equations. However, if anyone were asked what 5 divided by ...
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Physics, Theoretical Understanding and the Limits of Human Knowledge/Understanding

During an interview with Discover magazine, Roger Penrose makes the claim that a lot of the most theoretical physics, a la the physical theories that try to account for the discrepancies and ...
Erik G.'s user avatar
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How does entropy explain consciousness and the forward direction of time?

How does entropy explain consciousness and the forward direction of time? I was told that entropy is the increasing of disorderliness and that consciousness cannot exist as memory increases when ...
Sayaman's user avatar
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Philosophy - Does Einstein's Block Universe theory prove Nietzsche's Eternal Return theory is true?

If the Past, Present, and Future all exist in exactly the same way, then every single moment would be a ‘Now’ moment for me. it would also mean that me being dead in the future is equally real in the ...
user202315's user avatar
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What are the alleged reasons for emergence?

What are the alleged reasons for emergence? What explains emergence, what are the philosophical explanations for emergence? Does it indicate that there's gap in our knowledge, does it indicate that it'...
Sayaman's user avatar
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34 votes
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Why is the complex number an integral part of physical reality?

In modern physics, the quantum wave distribution function necessarily uses complex numbers to represent itself. If physics defines the physical reality, then what we are saying by the statement above ...
Dheeraj Verma's user avatar
18 votes
12 answers
14k views

Is time a physical factor or just a concept?

When thinking of cycles and myths, one cannot pass the idea of Kronos or Kali. That brought me to form some questions about the nature of time. Three definitions for time: Time is a measure of the ...
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Was Einstein a philosopher?

Albert Einstein described the fact that he believed in 'god'; yet, he did not define that god as a personal god who actually existed as a separate being. He used the concept to describe everything ...
Jez's user avatar
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9 votes
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Is there a known limit to relationship between physics and mathematics?

I am much interested in discussions such as Wigner's "The Unreasonable Effectiveness of Mathematics in the Natural Sciences". It's quite amazing that mathematics so well applies to our universe, and ...
Alex Nye's user avatar
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4 answers
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What philosophical problem did Newton solve?

In a philosophy 101 lecture I listened to recently, the lecturer said that if a philosopher is successful and is able to solve a philosophical question for good, the topic of that question branches ...
Alexander S King's user avatar
6 votes
2 answers
816 views

Where does Aristotle's Posterior Analytics disagree with modern philosophy of science?

Aristotle's Posterior Analytics is the basis of the modern scientific method of arguing from effects to the causes of things ("demonstration quia" or "a posteriori"). The ideal [of a unified ...
Geremia's user avatar
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Is something physical if and only if we can perceive it (directly or indirectly) with our bodily senses?

What is the relationship between the physical and our senses? If something is physical, must it necessarily be the case that we should be able to perceive it, at least in principle, directly with our ...
Mark's user avatar
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5 votes
5 answers
460 views

How do non-theist idealists account for laws of physics?

Berkeley has a god that forces regularity of sensations/perception on all other minds. So a super-mind is the source of the laws of physics. I assume it's the same with any theistic idealism. But I ...
Ameet Sharma's user avatar
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What is the basis for attributing discontinuity to space-time?

Speaking of the discrete orbits of electrons, Bertrand Russell asks the following: "Do we know that, between one orbit and the next, other orbits are geometrically possible? Einstein has led us ...
user avatar
4 votes
5 answers
829 views

Consciousness and Understanding of Physics, Mathematics and Philosophy

I just finished watching a youtube video Bernard Carr - Why Did Consciousness Emerge? on consciousness and the talkers spend a great deal of time talking about emergent aspect of consciousness and its ...
Alexander's user avatar
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6 answers
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Does all matter exist forever?

I was reading about non-duality (spirituality / philosophy) that discusses the idea that everything in reality is one, since any matter can become any other matter, (a tree can become a chair and a ...
Cloud's user avatar
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2 answers
578 views

Is the conservation of matter/energy principle and 'quanta' of Physics implicit in Lucretius ontology?

The Stanford Encyclopedia of Philosophys entry on Lucretius has: "First comes, in effect, Lucretius' ontology. Nothing comes into being out of nothing or perishes into nothing. The only two per se ...
Mozibur Ullah's user avatar
3 votes
6 answers
547 views

Can the laws of physics rule out disembodied minds?

In this article, philosopher Evan Fales argues that the laws of physics establish that disembodied minds (such as an immaterial God, for example) could not influence the physical world. Is it true? (...
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3 votes
3 answers
152 views

Does "ens materiale" = "ens sensible"? If so, why?

As far as I know, Aristotelianism and Thomism state that a material being is always potentially sensible. For example, there are microorganisms that we cannot see with the naked eye. But if we use a ...
Geremia's user avatar
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3 votes
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Are there examples in the literature of rigorous mathematical models of libertarian free will that take the laws of physics into account?

What I'm looking for is a detailed description of the decision-making process of an agent that possesses libertarian free will, when this agent is on the verge of making a choice, at some time t. For ...
Mark's user avatar
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3 votes
1 answer
121 views

What should be first according to Aristotle: the nature of being or the nature of explanation?

I see that in his Metaphysics he starts speaking of the nature of explanation as if he thinks, I think, that it is key to be understood before moving to the investigation about being. But then, in his ...
César D. Vázquez's user avatar
2 votes
5 answers
270 views

Special Relativity - Discussions I've seen online

I've seen some odd discussions on this forum that have stuck with me. But I've seen there are some very clever physicists and philosophers on here who actually understand relativity... In relativity ...
Simon01_Pringles's user avatar
2 votes
5 answers
395 views

What is a quantum particle like before it is measured?

I have been trying to ask about this over on the Physics Stack Exchange, but they aren't really interested in questions that are this speculative. Does anyone here have any ideas about what quantum ...
Jeff Bass's user avatar
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3 answers
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Aristotle's Physics: Why do objects strike the ground harder when dropped from higher?

It's my understanding that Aristotle believed 1) that gravity is a constant force toward the center of the earth, and 2) forces cause objects to move but not accelerate. It seems to me if those are ...
Addem's user avatar
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1 vote
4 answers
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Time as a physical dimension

What is the intuition behind time being a physical dimension? I read the phrase "in cosmology terms, far away means long ago" somewhere and I got to thinking what if time is an emergent property of ...
Ravi Shankar's user avatar
1 vote
0 answers
48 views

Reviewing Loschmidt’s paradox in the quantum case?

Boltzmann formulated the Stosszahlansatz : Stosszahlansatz is the assumption that the velocities of colliding particles are uncorrelated, and independent of position. This means the probability that ...
More Anonymous's user avatar
1 vote
3 answers
108 views

What is the motive of the universe? [closed]

If you look at the options, the universe is either temporally bounded temporally unbounded is either bounded spatially or unbounded spatially and is any of these permutations with our uncertainty. ...
8Mad0Manc8's user avatar
1 vote
5 answers
250 views

How Can Computation Cause Consciousness?

The question of how consciousness arises and what, if any, effect it has on our behaviour is clearly both fascinating intellectually and of great practical and ethical significance. One very common ...
MBar2269's user avatar
1 vote
1 answer
273 views

What is the entropy of the universe at the time of the Big Bang? [closed]

High entropy generally means high disorder; and low entropy low disorder; the two paradigmatic cases that illustrate these two possibilities is a gas, for the first, and a crystal for the second. ...
Mozibur Ullah's user avatar
0 votes
4 answers
265 views

Is there a reason for why the wave function for a particle is the way it is?

I have read that in quantum mechanics, predicting the position of an electron, say in the double slit experiment is impossible. It is thus then implied that there is no reason for the electron to end ...
user avatar
0 votes
1 answer
290 views

Philosophy - If both the Rebound Universe and Block Universe theories are true would that mean Nietzsche's Eternal Return theory true?

If the Block Universe is true, and if the Rebound Universe is also true where the universe goes from Big Crunch to Big bang then doesn't that mean that the Block Universe is shaped like a circle where ...
user202315's user avatar