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Undergrad An Imagined Diffraction Grating
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68
Undergrad Can somebody explain this: Planck's Law in action
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15
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833
Wordle Lovers - Play the NYT Daily Game
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266
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232K
Undergrad Antilinear Operators
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11
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Insights What Exactly is Dirac’s Delta Function? - Insight
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2
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33
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4K
Curving of gravitational field lines
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9
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779
Collection of Lame Jokes
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786
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24K
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2M
Other Complex analysis or calculus?
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13
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752
  • Poll Poll
I am older than she is/than her...
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22
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389
A different periodic table to ponder
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14
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822
Undergrad Identification of changes in internal energy with work (in Callen's Thermodynamics)
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1
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176
Electric transferring from powerplant
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3
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163
Measuring Deer Antler Volume
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3
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65
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2K
Undergrad Can a Gyroscope in a Satellite Detect Orbit?
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2
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47
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5K
File Structure vs Data Structure
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7
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277
Music Cover songs versus the original track, which ones are better?
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75
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99K
Share Animal Pictures: For Animal Lovers
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100
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268K
Other How do physicists practically switch fields to non-adjacent subfields?
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3
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216
History Biographies, History, Philosophy of Physics
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9
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253
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Undergrad Proving that convexity implies second order derivative being positive
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6
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290
Optical Building a Raman spectrometer….
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2
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4K
Undergrad What areas of maths and physics do I need to understand explosion physics?
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2
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46
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2K
A complex spring's structural analysis
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7
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569
Collection of Science Jokes P2
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135
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4K
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440K
Undergrad Please Explain (actually explain) The Monty Hall Problem
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2
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53
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Undergrad Entanglement swapping in the context of Indivisible Stochastic Process
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2
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215
Trail - vscode extension for research projects
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3
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267
Undergrad Self Energy?
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19
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1K
Automotive Looking for dyno verified experiences with turbocharged 2-strokes
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2
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1K
Physics Need some advice! (making a physics YouTube channel)
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12
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783
How far will we let AI control us?
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3
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79
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1K
Net metering - hybrid solar inverter system question
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9
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616
Undergrad Erroneously finding discrepancy in transpose rule
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11
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744
Fresh 42
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4
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438
Help needed with Polarisation (Rotated Waveplates)
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8
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910
Misc. Yarn cross-section and path length
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2
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304
Any plausible non chemical rocket based space launch system on Earth?
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22
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810
A movie about AI and physics!?
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3
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203
Undergrad One does not “prove” the basic principles of Quantum Mechanics
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17
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759
Undergrad Axial angular momentum calculation
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17
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2K
Other Master's degree advice to work in the Space Industry
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4
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917
YouTube Classics, Part Deux
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27
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805
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78K
Undergrad Strings 2025 Conference: Insights, Criticisms, and Key Highlights
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2
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Undergrad A novel explanation of CKM and PMNS matrix parameters
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3
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For those who ask: "What programming language should I learn?"
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5
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Volcanic Eruption(s) and the Bubonic Plague Pandemic of 1346-1353 CE
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2
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331
Kitten Lovers: Cuteness Overload
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129
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4K
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577K
  • Poll Poll
Why do we spend so little time learning grammar in college?
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5
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3K
High School NASA Data Site Down
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5
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417
Random Photos
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114
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158K
What Caused the Recent Power Outage in Spain, Portugal, and Southern France?
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3
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Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
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16
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4K
Undergrad Properties of angular momentum
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7
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470
Undergrad Is energy really conserved?
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2
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The Secrets of Prof. Verschure's Rosetta Stones
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5
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135
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Synchronous Condensers for Power Grid Stabilization
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6
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436
Scrolling pops back wrong way
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17
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793
I'm trying to intuit how pull-up and pull-down resistors work
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27
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2K
Today I Learned
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228
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458K
Insights Thinking Outside The Box Versus Knowing What’s In The Box
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26
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6K
R.I.P. Steven Cropper: October 12th 1942 – Dec 3rd 2025
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0
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177
Hello
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1
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92
High School Looking for info about the Sombrero Galaxy
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10
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512
Undergrad Trigonometry problem of interest
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3
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81
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5K
Bill Murphy
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3
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581
ChatGPT Examples, Good and Bad
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14
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30K
Mystery of the Universe's lover, curious about quantum mechanics
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1
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321
Auto/Motor How could I wire the washing machine motor 8529935 as an AC generator?
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2
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178
hi
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1
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151
Wood/Glass/Metal Which 3D printer would be best for this printing job?
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8
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265
Can you get pulled under a train?
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2
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36
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3K
News Weird News Compilation
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70
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153K
Countermeasures for hypersonic weapons
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8
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23K
Trending content
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3
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235
Creating the geometry using MNCPX VisEd
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4
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1K
Undergrad Physical Interpretation of Frame Field
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2
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41
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1K
Undergrad How do E[X] and E[|X|] relate?
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6
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833
Graduate Could there be a "Communication Theorem" instead of a "No-Communication Theorem" in quantum entanglement?
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4
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502
Best physics magazines?
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1
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200
Graduate Help in understanding this derivation of Lagrange Equations in Non-Holonomic case
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1
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1K
  • Sticky
Space Stuff and Launch Info
  • · Replies 2K ·
53
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2K
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164K
Graduate Monte Carlo simulation for the classical isotropic 3D Heisenberg model
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1
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3K
Someone interested in quantum materials and covetics
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1
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141
High School Trying to understand wind forces on a door
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6
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409
Closet nerd, stepping into the light of discussion
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2
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156
Announcement PF Member Awards 2025 Coming Soon!
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3
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382
High School Why higher speeds need more power if the backward force is the same?
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2
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38
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1K
Kitten raising advice
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2
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40
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2K
Great ebass playing
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3
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78
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2K
Raspberry Pi 5 -- Start up USB Wifi Dongle on boot
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2
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266
Free 4D Earth Book
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0
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149
Einstein vs Newton - Who is your favorite and why?
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28
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954
High School Applied Mechanics -- Billiard Balls
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1
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190
Is it possible for a vertical rod balancing on a table to lose contact by striking the top of the rod?
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7
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2K
Undergrad Time rondeau crystals, experimental observations
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1
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677
Bernoulli vs real life experiment
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16
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1K
High School Where does the figure for a proton's rest mass come from?
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4
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543
Undergrad Could Venus be a 'Soot World'?
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14
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624
Some thoughts about self-education
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25
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5K
Graduate The Exceptional Jordan Algebra in physics
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4
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3K