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, meta, 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
: "What laptops/computers do physics researchers (PhD and beyond) actually use?"
39 posts
#2
Image
: "How would you proceed..."
15 posts
#3
Meta
: "Textbooks & Resources - Weekly Discussion Thread - August 07, 2026"
4 posts
#4
Video
: "The quantum switch only works if each operation is used exactly once — I got this wrong at firs"
4 posts
#5
Academic
: "The Maxwell Conjecture is False"
3 posts
#6
News
: "Physicists link the Riemann Hypothesis to phase transitions in quantum systems (study)"
2 posts
Member Growth in r/Physics
Yearly
+75k members(2.4%)
Similar Subreddits to r/Physics
r/ApplyingToCollege
1.3M members
6.9% / yr
r/AskPhysics
1.6M members
4.1% / yr
r/autism
576k members
19.6% / yr
r/business
2.6M members
3.5% / yr
r/Christians
94k members
13.1% / yr
r/EngineeringStudents
1.0M members
7.7% / yr
r/kindle
530k members
22.4% / yr
r/loseit
4.2M members
3.2% / yr
r/PhysicsStudents
143k members
22.6% / yr
r/sysadmin
1.3M members
14.2% / yr
About
GummySearch helps people research Reddit communities by organizing activity, growth, themes, and post-level signals into one place.
This page gives a focused view of r/Physics, including current member size, discussion patterns, product reviews, and related communities to explore.
This data is synced periodically so insights stay current and useful for ongoing research.
Last updated: August 10, 2026