r/Physics
3.2M members
r/Physics is a subreddit with 3.2M members. The community frequently discusses physics, quantum, looking for, struggling, and theory, and they frequently recommend/review physics books, coding language, and simulation software, and the most common flair used is question, image, news, video, and academic.
For physicists and physics students. See the rules before posting, and the subreddit wiki for common questions. Basic homework questions are not allowed.
Popular Topics in r/Physics
#1
Physics
280 posts
#2
Quantum
35 posts
#3
Looking For
25 posts
#4
Struggling
23 posts
#5
Theory
20 posts
#6
Time
17 posts
#7
Force
15 posts
#8
Energy
13 posts
#9
Struggle
12 posts
#10
Frustrating
12 posts
Products Discussed in r/Physics
Physics Books
83 reviews
#1
Young and Freedman
4.4★ from 8 reviews
#2
Richard Feynman
4.9★ from 7 reviews
#3
David J. Griffiths
4.0★ from 6 reviews
Coding Language
40 reviews
#1
Python
4.9★ from 17 reviews
#2
Julia
4.8★ from 8 reviews
#3
Fortran
4.9★ from 7 reviews
Simulation Software
9 reviews
#1
Geant4
3.0★ from 1 review
#2
Python
5.0★ from 1 review
#3
SimPy
4.0★ from 1 review
Flair Used in r/Physics
#1
Question
: "Too dumb to study physics?"
51 posts
#2
Image
: "Enrico Fermi's signature on the wine bottle that celebrated the first nuclear chain reaction"
13 posts
#3
News
: "UK's iconic Jodrell Bank telescope faces axe in science cuts"
5 posts
#4
Video
: "Torque-free precession reduces/converges to the axis of angular momentum?"
5 posts
#5
Academic
: "Why do we do Astrophysics? | "I have heard it said, more than once, that an LLM can do some task “better than a graduate student.” That language makes me uncomfortable, because it is taking an extremely instrumental view of graduate students.""
3 posts
#6
Meta
: "Textbooks & Resources - Weekly Discussion Thread - July 24, 2026"
2 posts
Member Growth in r/Physics
Yearly
+73k members(2.3%)
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About
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Last updated: July 30, 2026