Physics

Tag

Dark Matters

Diffractor14 Mar 2021 23:36 UTC

230 points

24 comments15 min readLW link

The Quantum Physics Sequence

Eliezer Yudkowsky11 Jun 2008 3:42 UTC

63 points

26 comments15 min readLW link

The Second Law of Thermodynamics, and Engines of Cognition

Eliezer Yudkowsky27 Feb 2008 0:48 UTC

149 points

71 comments9 min readLW link

Thou Art Physics

Eliezer Yudkowsky6 Jun 2008 6:37 UTC

124 points

88 comments3 min readLW link

So you think you understand Quantum Mechanics

shminux22 Dec 2012 21:16 UTC

65 points

64 comments3 min readLW link

Introduction to abstract entropy

Alex_Altair20 Oct 2022 21:03 UTC

203 points

73 comments18 min readLW link

The special nature of special relativity

adamShimi9 Jan 2023 17:30 UTC

37 points

1 comment3 min readLW link

(epistemologicalvigilance.substack.com)

Two More Things to Unlearn from School

Eliezer Yudkowsky12 Jul 2007 17:45 UTC

142 points

157 comments2 min readLW link

Climate technology primer (1/3): basics

amarbles25 Oct 2019 23:18 UTC

38 points

5 comments58 min readLW link

Quantum Physics Revealed As Non-Mysterious

Eliezer Yudkowsky12 Jun 2008 5:20 UTC

13 points

26 comments8 min readLW link

How counting neutrons explains nuclear waste

jasoncrawford30 May 2021 18:10 UTC

93 points

11 comments14 min readLW link

(rootsofprogress.org)

Why Study Physics?

johnswentworth27 Nov 2021 22:30 UTC

65 points

30 comments3 min readLW link

An Alternative Interpretation of Physics

dadadarren9 May 2022 0:52 UTC

18 points

10 comments5 min readLW link

(www.sleepingbeautyproblem.com)

Deriving General Relativity

lsusr22 Jun 2020 9:52 UTC

2 points

0 comments2 min readLW link

Einstein’s Speed

Eliezer Yudkowsky21 May 2008 2:48 UTC

59 points

36 comments8 min readLW link

References & Resources for LessWrong

XiXiDu10 Oct 2010 14:54 UTC

156 points

106 comments20 min readLW link

Career prospects for physics majors

JonahS4 Apr 2014 3:02 UTC

20 points

32 comments5 min readLW link

Timeless Physics

Eliezer Yudkowsky27 May 2008 9:09 UTC

53 points

121 comments12 min readLW link

[Question] What empirical work has been done that bears on the ‘freebit picture’ of free will?

DanielFilan4 Oct 2019 23:11 UTC

9 points

5 comments1 min readLW link

How accurate is the quantum physics sequence?

Paul Crowley17 Apr 2012 6:54 UTC

72 points

68 comments1 min readLW link

The Value of Theoretical Research

paulfchristiano25 Feb 2011 18:06 UTC

51 points

53 comments3 min readLW link

Quantum Explanations

Eliezer Yudkowsky9 Apr 2008 8:15 UTC

77 points

59 comments6 min readLW link

Decoherence is Falsifiable and Testable

Eliezer Yudkowsky7 May 2008 7:54 UTC

40 points

42 comments9 min readLW link

Living in Many Worlds

Eliezer Yudkowsky5 Jun 2008 2:24 UTC

55 points

80 comments5 min readLW link

Where Philosophy Meets Science

Eliezer Yudkowsky12 Apr 2008 21:21 UTC

48 points

22 comments4 min readLW link

Many Worlds, One Best Guess

Eliezer Yudkowsky11 May 2008 8:32 UTC

47 points

79 comments13 min readLW link

Zeno walks into a bar

lsusr4 Aug 2019 7:00 UTC

37 points

4 comments2 min readLW link

Beliefs at different timescales

Nisan4 Nov 2018 20:10 UTC

25 points

12 comments2 min readLW link

Physics has laws, the Universe might not

shminux9 Jun 2018 5:33 UTC

25 points

23 comments3 min readLW link

Multiple Worlds, One Universal Wave Function

evhub4 Nov 2020 22:28 UTC

48 points

76 comments25 min readLW link

Generalized Heat Engine

johnswentworth5 Nov 2020 19:01 UTC

156 points

12 comments7 min readLW link

Can we see light?

Zane Scheepers7 Dec 2017 12:54 UTC

3 points

34 comments2 min readLW link

[Summary] “Introduction to Electrodynamics” by David Griffiths—Part 1

lsusr22 Sep 2021 22:22 UTC

25 points

4 comments4 min readLW link

Notes from the book ‘First Three Minutes’ by Steven Weinberg

invertedpassion13 Oct 2021 9:06 UTC

6 points

0 comments9 min readLW link

Brain Efficiency: Much More than You Wanted to Know

jacob_cannell6 Jan 2022 3:38 UTC

204 points

90 comments28 min readLW link

Disambiguating the ‘Observable Universe’

Sam Enright26 Jan 2022 16:50 UTC

24 points

5 comments2 min readLW link

An analogy as the midwife of thermodynamics

adamShimi16 Feb 2022 21:34 UTC

30 points

10 comments7 min readLW link

12 interesting things I learned studying the discovery of nature’s laws

Ben Pace19 Feb 2022 23:39 UTC

248 points

40 comments9 min readLW link

Shotgun Book Reviews: Against Method, The Knowledge Machine and Understanding Nature

adamShimi14 Mar 2022 8:13 UTC

28 points

2 comments8 min readLW link

Replacing Natural Interpretations

adamShimi16 Mar 2022 13:05 UTC

16 points

0 comments7 min readLW link

Jeff Shainline thinks that there is too much serendipity in the physics of optical/superconducting computing, suggesting that they were part of the criteria of Cosmological Natural Selection, which could have some fairly lovecraftian implications

mako yass1 Apr 2022 7:09 UTC

16 points

3 comments26 min readLW link

Are the fundamental physical constants computable?

Yair Halberstadt5 Apr 2022 15:05 UTC

15 points

6 comments2 min readLW link

[Question] What’s the longest a sentient observer could survive in the Dark Era?

Raemon15 Sep 2022 8:43 UTC

33 points

15 comments1 min readLW link

A dynamical systems primer for entropy and optimization

Alex_Altair10 Dec 2022 0:13 UTC

32 points

3 comments7 min readLW link

Explanatory Parsimony, Explanatory Superfluousness and Uselessness of Newton’s First Law

Jimdrix_Hendri24 Jan 2023 17:21 UTC

−2 points

7 comments2 min readLW link

[Question] Can we really prevent all warming for less than 10B$ with the mostly side-effect free geoengineering technique of Marine Cloud Brightening?

mako yass5 Aug 2019 0:12 UTC

90 points

55 comments2 min readLW link

Make more land

jefftk16 Oct 2019 11:20 UTC

149 points

32 comments2 min readLW link 5 reviews

(www.jefftk.com)

Weird question: could we see distant aliens?

paulfchristiano20 Apr 2018 6:40 UTC

31 points

78 comments3 min readLW link

The mathematical universe: the map that is the territory

ata26 Mar 2010 9:26 UTC

100 points

123 comments11 min readLW link

Why it took so long to do the Fermi calculation right?

Jan_Kulveit2 Jul 2018 20:29 UTC

75 points

20 comments1 min readLW link

No One Can Exempt You From Rationality’s Laws

Eliezer Yudkowsky7 Oct 2007 17:24 UTC

112 points

55 comments3 min readLW link

If Many-Worlds Had Come First

Eliezer Yudkowsky10 May 2008 7:43 UTC

78 points

189 comments9 min readLW link

Were atoms real?

AnnaSalamon8 Dec 2010 17:30 UTC

92 points

157 comments4 min readLW link

Explaining vs. Explaining Away

Eliezer Yudkowsky17 Mar 2008 1:59 UTC

95 points

101 comments4 min readLW link

Einstein’s Arrogance

Eliezer Yudkowsky25 Sep 2007 1:29 UTC

134 points

91 comments3 min readLW link

To reduce astronomical waste: take your time, then go very fast

Stuart_Armstrong13 Jul 2013 16:41 UTC

70 points

50 comments3 min readLW link

Configurations and Amplitude

Eliezer Yudkowsky11 Apr 2008 3:14 UTC

65 points

390 comments10 min readLW link

Joint Configurations

Eliezer Yudkowsky11 Apr 2008 5:00 UTC

66 points

40 comments4 min readLW link

Belief in the Implied Invisible

Eliezer Yudkowsky8 Apr 2008 7:40 UTC

55 points

35 comments6 min readLW link

Being Half-Rational About Pascal’s Wager is Even Worse

Eliezer Yudkowsky18 Apr 2013 5:20 UTC

60 points

166 comments9 min readLW link

Quantum Non-Realism

Eliezer Yudkowsky8 May 2008 5:27 UTC

49 points

40 comments8 min readLW link

Where Physics Meets Experience

Eliezer Yudkowsky25 Apr 2008 4:58 UTC

67 points

38 comments11 min readLW link

Where Experience Confuses Physicists

Eliezer Yudkowsky26 Apr 2008 5:05 UTC

33 points

30 comments8 min readLW link

Distinct Configurations

Eliezer Yudkowsky12 Apr 2008 4:42 UTC

63 points

24 comments6 min readLW link

Philosophy as low-energy approximation

Charlie Steiner5 Feb 2019 19:34 UTC

39 points

20 comments3 min readLW link

Decoherence is Simple

Eliezer Yudkowsky6 May 2008 7:44 UTC

57 points

62 comments11 min readLW link

Scott Aaronson on Born Probabilities

Wei_Dai2 Oct 2009 6:40 UTC

39 points

8 comments4 min readLW link

Can You Prove Two Particles Are Identical?

Eliezer Yudkowsky14 Apr 2008 7:06 UTC

55 points

107 comments5 min readLW link

Collapse Postulates

Eliezer Yudkowsky9 May 2008 7:49 UTC

48 points

65 comments3 min readLW link

Ask an experimental physicist

RolfAndreassen8 Jun 2012 23:43 UTC

49 points

294 comments1 min readLW link

Classical Configuration Spaces

Eliezer Yudkowsky15 Apr 2008 8:40 UTC

38 points

12 comments5 min readLW link

The Quantum Arena

Eliezer Yudkowsky15 Apr 2008 19:00 UTC

31 points

72 comments6 min readLW link

Feynman Paths

Eliezer Yudkowsky17 Apr 2008 6:32 UTC

31 points

33 comments4 min readLW link

No Individual Particles

Eliezer Yudkowsky18 Apr 2008 4:40 UTC

30 points

24 comments5 min readLW link

Identity Isn’t In Specific Atoms

Eliezer Yudkowsky19 Apr 2008 4:55 UTC

46 points

74 comments6 min readLW link

Decoherence

Eliezer Yudkowsky22 Apr 2008 6:41 UTC

32 points

30 comments7 min readLW link

The So-Called Heisenberg Uncertainty Principle

Eliezer Yudkowsky23 Apr 2008 6:36 UTC

30 points

22 comments7 min readLW link

Which Basis Is More Fundamental?

Eliezer Yudkowsky24 Apr 2008 4:17 UTC

20 points

39 comments6 min readLW link

On Being Decoherent

Eliezer Yudkowsky27 Apr 2008 4:59 UTC

23 points

78 comments7 min readLW link

Decoherence is Pointless

Eliezer Yudkowsky29 Apr 2008 6:38 UTC

16 points

5 comments2 min readLW link

Decoherent Essences

Eliezer Yudkowsky30 Apr 2008 6:32 UTC

23 points

36 comments7 min readLW link

The Born Probabilities

Eliezer Yudkowsky1 May 2008 5:50 UTC

35 points

83 comments6 min readLW link

Decoherence as Projection

Eliezer Yudkowsky2 May 2008 6:32 UTC

26 points

27 comments11 min readLW link

Entangled Photons

Eliezer Yudkowsky3 May 2008 7:20 UTC

14 points

11 comments6 min readLW link

Bell’s Theorem: No EPR “Reality”

Eliezer Yudkowsky4 May 2008 4:44 UTC

32 points

29 comments9 min readLW link

Spooky Action at a Distance: The No-Communication Theorem

Eliezer Yudkowsky5 May 2008 2:43 UTC

21 points

36 comments10 min readLW link

Why Quantum?

Eliezer Yudkowsky4 Jun 2008 5:34 UTC

35 points

52 comments6 min readLW link

An Intuitive Explanation of Quantum Mechanics

Eliezer Yudkowsky12 Jun 2008 3:45 UTC

16 points

3 comments5 min readLW link

And the Winner is… Many-Worlds!

Eliezer Yudkowsky12 Jun 2008 6:05 UTC

27 points

12 comments9 min readLW link

Quantum Mechanics and Personal Identity

Eliezer Yudkowsky12 Jun 2008 7:13 UTC

11 points

30 comments10 min readLW link

Heat vs. Motion

Eliezer Yudkowsky1 Apr 2008 3:55 UTC

45 points

70 comments5 min readLW link

Debugging the Quantum Physics Sequence

Mitchell_Porter5 Sep 2012 15:55 UTC

43 points

130 comments2 min readLW link

[Link] The Greek Heliocentric Theory

[deleted]12 Jun 2012 17:18 UTC

52 points

11 comments3 min readLW link

LA-602 vs. RHIC Review

Eliezer Yudkowsky19 Jun 2008 10:00 UTC

57 points

62 comments6 min readLW link

Mach’s Principle: Anti-Epiphenomenal Physics

Eliezer Yudkowsky24 May 2008 5:01 UTC

40 points

26 comments10 min readLW link

Timeless Control

Eliezer Yudkowsky7 Jun 2008 5:16 UTC

38 points

69 comments9 min readLW link

The ongoing transformation of quantum field theory

Mitchell_Porter29 Dec 2012 9:45 UTC

31 points

19 comments3 min readLW link

Entropy and Temperature

spxtr17 Dec 2014 8:04 UTC

39 points

96 comments3 min readLW link

Frugality and working from finite data

Snowyowl3 Sep 2010 9:37 UTC

35 points

47 comments4 min readLW link

A thought-process testing opportunity

[deleted]22 Apr 2013 19:51 UTC

46 points

28 comments1 min readLW link

Should We Ban Physics?

Eliezer Yudkowsky21 Jul 2008 8:12 UTC

21 points

22 comments2 min readLW link

Decelerating: laser vs gun vs rocket

Stuart_Armstrong18 Feb 2019 23:21 UTC

22 points

16 comments3 min readLW link

The Conscious Sorites Paradox

Eliezer Yudkowsky28 Apr 2008 2:58 UTC

16 points

41 comments5 min readLW link

Relative Configuration Space

Eliezer Yudkowsky26 May 2008 9:25 UTC

21 points

22 comments8 min readLW link

Timeless Beauty

Eliezer Yudkowsky28 May 2008 4:32 UTC

22 points

70 comments4 min readLW link

Shock Level 5: Big Worlds and Modal Realism

Roko25 May 2010 23:19 UTC

36 points

158 comments4 min readLW link

Boxxy and Reagan

[deleted]13 Mar 2009 6:36 UTC

−5 points

1 comment1 min readLW link

Are you in a Boltzmann simulation?

Stuart_Armstrong13 Sep 2018 12:56 UTC

23 points

29 comments3 min readLW link

Astrobiology, Astronomy, and the Fermi Paradox II: Space & Time Revisited

CellBioGuy10 Mar 2016 5:19 UTC

35 points

35 comments1 min readLW link

[Question] Is “physical nondeterminism” a meaningful concept?

Liron16 Jun 2019 15:55 UTC

23 points

15 comments1 min readLW link

[Question] How does electricity work literally?

Long try24 Feb 2020 13:27 UTC

1 point

35 comments1 min readLW link

Can we model technological singularity as the phase transition?

Just Learning26 Dec 2020 3:20 UTC

4 points

3 comments4 min readLW link

Singularity&phase transition-2. A priori probability and ways to check.

Just Learning8 Feb 2021 2:21 UTC

1 point

0 comments3 min readLW link

The (not so) paradoxical asymmetry between position and momentum

Erik Jenner28 Mar 2021 13:31 UTC

21 points

10 comments4 min readLW link

On Falsifying the Simulation Hypothesis (or Embracing its Predictions)

lorepieri12 Apr 2021 0:12 UTC

8 points

17 comments5 min readLW link

Other Constructions of Gravity

michaelcohen9 Jun 2021 20:06 UTC

4 points

2 comments2 min readLW link

From Branes to Brains. How mathematical physics can be used in life sciences.

From_Branes_to_Brains31 Aug 2021 19:40 UTC

22 points

3 comments1 min readLW link

Explanations as Hard to Vary Assertions

Alexander24 Sep 2021 11:33 UTC

17 points

24 comments8 min readLW link

Question Gravity

Isaac King13 Jan 2022 6:30 UTC

50 points

8 comments2 min readLW link

Technological Resurrection: Two Possible Approaches

Alex Polischuk14 Mar 2022 17:53 UTC

−3 points

2 comments2 min readLW link

Negentropy Overrated?

paulfchristiano29 Dec 2011 10:14 UTC

33 points

32 comments1 min readLW link

Ion Implantation: Theory, Equipment, Process, Alternatives

ethanmorse8 May 2022 22:30 UTC

5 points

0 comments16 min readLW link

(210ethan.github.io)

Deconfusing Landauer’s Principle

EuanMcLean27 May 2022 17:58 UTC

44 points

12 comments15 min readLW link

[Question] Formation via nucleation of boltzmann brains

Zeruel0171 Jun 2022 18:05 UTC

0 points

9 comments1 min readLW link

[Question] Does quantum mechanics predict all the effects of relativity except gravity?

EniScien4 Jun 2022 13:52 UTC

4 points

2 comments1 min readLW link

A Butterfly’s View of Probability

Gabriel Wu15 Jun 2022 2:14 UTC

29 points

17 comments11 min readLW link

[Question] What is the most probable AI?

Zeruel01720 Jun 2022 23:26 UTC

−2 points

0 comments3 min readLW link

How to destroy the universe with a hypercomputer

Trevor Cappallo5 Jul 2022 19:05 UTC

−3 points

3 comments1 min readLW link

[Question] In a lack of data, how should you weigh credences in theoretical physics’s Theories of Everything, or TOEs?

Noosphere897 Sep 2022 18:25 UTC

7 points

11 comments1 min readLW link

Simple proofs of the age of the universe (or other things)

Astynax13 Sep 2022 18:20 UTC

16 points

12 comments1 min readLW link

[Question] Does biology reliably find the global maximum, or at least get close?

Noosphere8910 Oct 2022 20:55 UTC

24 points

70 comments1 min readLW link

“Are Experiments Possible?” Seeds of Science call for reviewers

rogersbacon2 Nov 2022 20:05 UTC

8 points

0 comments1 min readLW link

The harnessing of complexity

geduardo10 Nov 2022 18:44 UTC

6 points

2 comments3 min readLW link

Brute-forcing the universe: a non-standard shot at diamond alignment

Martín Soto22 Nov 2022 22:36 UTC

7 points

2 comments20 min readLW link

Is Constructor Theory a useful tool for AI alignment?

A.H.29 Nov 2022 12:35 UTC

11 points

8 comments26 min readLW link

[Link] Wavefunctions: from Linear Algebra to Spinors

sen7 Dec 2022 12:44 UTC

11 points

12 comments1 min readLW link

(paperclip.substack.com)

Properties of current AIs and some predictions of the evolution of AI from the perspective of scale-free theories of agency and regulative development

Roman Leventov20 Dec 2022 17:13 UTC

27 points

2 comments36 min readLW link

[Question] A post-quantum theory of classical gravity?

Logan Zoellner23 Jan 2023 20:39 UTC

13 points

5 comments1 min readLW link

[Question] What qualities does an AGI need to have to realize the risk of false vacuum, without hardcoding physics theories into it?

RationalSieve3 Feb 2023 16:00 UTC

1 point

4 comments1 min readLW link

A multi-disciplinary view on AI safety research

Roman Leventov8 Feb 2023 16:50 UTC

36 points

4 comments26 min readLW link

Thoughts on an Expanded Simulation Hypothesis: AI Caretakers, Consciousness Removal, WBE-AI Hybrids, & Some Physics

amelia14 Feb 2023 19:30 UTC

0 points

4 comments5 min readLW link

[Question] What causes randomness?

lotsofquestions23 Feb 2023 18:50 UTC

1 point

11 comments1 min readLW link

On Universe-Centrism & the Risk of Theocratic Science: Why Not Consider a Deeper Reality?

amelia2 Mar 2023 20:12 UTC

8 points

11 comments1 min readLW link

Philosophical Physics Discussion Follow-up

amelia6 Mar 2023 7:55 UTC

9 points

19 comments2 min readLW link

(www.lesswrong.com)

An Encapsulating World Interpretation of Wave Function Collapse?

amelia19 Mar 2023 2:55 UTC

−3 points

6 comments1 min readLW link

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