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Collection of Science Jokes P2
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136
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4K
Views
457K
Stargazing Solar Activity and Space Weather Update thread
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16
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451
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60K
  • Featured
A.I. - Human Job Replacement
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3
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81
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11K
Artemis 2 launch - humans return to the Moon after 54 years
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28
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1K
Interpreting VIA PCB through TDR and TRT
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3
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269
Marcus Jensen
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2
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122
Collection of Lame Jokes
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800
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24K
Views
2M
Undergrad Relativistic Uniform Circular Motion
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6
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301
Engineering Half wave voltage doubler
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15
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1K
Today I Learned
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231
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7K
Views
482K
Undergrad Curl of velocity vector in rotational motion
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7
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318
Is A.I. more than the sum of its parts?
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14
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390
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11K
Undergrad Why is gravity a fictitious force?
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3
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64
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2K
Wordle Lovers - Play the NYT Daily Game
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277
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8K
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263K
Undergrad Is Prof. Claus Kiefer's application of Gödel (+ infinity) justified?
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0
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108
Undergrad Large Synoptic Survey Telescope -> Vera C. Rubin Observatory
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15
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5K
Random Photos
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120
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4K
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179K
Help with problem in MIT open course general relativity
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18
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1K
Do old CRT and O-scopes degrade to emit harmful X Rays?
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13
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988
Undergrad Black hole questions
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5
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306
Undergrad How does this configuration not create E field inside the conductor?
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4
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221
Chemistry Why percent yield is sometimes less than 100% in chemistry experiments?
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6
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2K
Solve the given second order differential equation
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16
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Graduate Sidney Coleman's opinion on interpretation in his Dirac lecture
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5
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140
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4K
Undergrad What are the speed limits of a maglev track?
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4
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366
We needed a backstory for our Traveller sci-fi RPG ...
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1
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200
Undergrad Finding the minimum distance between two curves
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21
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1K
The Secrets of Prof. Verschure's Rosetta Stones
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6
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152
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38K
Random Thoughts 7
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67
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2K
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67K
High School Can alpha radiation make other materials radioactive?
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8
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4K
Undergrad KE of rotating disc
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3
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85
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3K
Geiger Counter Question
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22
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675
Union Micro-Macro
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1
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154
History Biographies, History, Philosophy of Physics
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10
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271
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25K
  • Sticky
Our Beautiful Universe - Photos and Videos
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81
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2K
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281K
Classical Self studying Taylor's Classical Mechanics
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10
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412
Dr. Leila Denmark
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0
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156
First Time Here!
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2
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119
High School Abel Prize awarded, 2026, to Gerd Faltings
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1
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524
Pre-reqs for Ultrafast Optics? (Jackson or Zangwill for Electrodynamics?)
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13
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4K
  • Poll Poll
Will anyone alive today see a permanent colony on the Moon or Mars?
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2
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54
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2K
Cover songs versus the original track, which ones are better?
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82
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2K
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126K
Warning: Bad actors may already be in store-now-decrypt-later mode
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5
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343
Molds in Front Loading Washing Machine
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13
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1K
What should sit beside a physics equation?
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5
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325
April Fool's Physics Papers 2026
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1
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176
Undergrad DH Mt Bike - Optimizing Drop Landing Ramp Profile
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2
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33
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930
Graduate Linearization of the Navier–Stokes equations for real airflow conditions
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1
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285
Whatever happened to Evo?
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6
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752
Controlled (Thyristor) Three-Phase Full-Wave Rectifiers in LTspice
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5
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312
Are these rabbit pellets???
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16
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1K
  • Sticky
Space Stuff and Launch Info
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55
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2K
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178K
The James Webb Space Telescope
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19
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544
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Big Ben In N Dimensions
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24
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2K
Talent Worthy of Wider Recognition
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5
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128
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12K
Extreme Ecology On Christmas Island
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3
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417
Undergrad What causes knots and stress when untwisting ropes?
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8
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3K
Q-Day: When Quantum Computers can Factor ultra-large numbers in a few...
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2
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45
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7K
High School What is "motion theory?"
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3
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265
Hello fellow explorers !!
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1
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127
Anthony Leggett obituary
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0
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175
HS Physics Teacher looking for support
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4
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385
Voyager 1: order-of-magnitude cross-track drift and speed loss over the next 100–1000 years
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2
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1K
Heaviest Rockin' Groove Ever?
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1
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117
Music I Should Like But Don't
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2
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178
Undergrad Simulated motion of an oblate and prolate spinning spheroid
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0
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186
Construction of a model of a hydraulic damper
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21
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1K
Rush Redux 2026
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4
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492
Graduate RIP Chen Ning Yang (1922-2025)
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7
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2K
introduction
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6
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180
  • Poll Poll
Request for a new History of Science subforum
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2
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44
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2K
Side reactions while dissolving silver
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6
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943
YouTube Classics, Part Deux
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28
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825
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83K
One pin AC connector (Coaxial)
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2
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31
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3K
Engineering Shear Stress Question (Rocker Arm & pin diameter)
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2
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1K
Undergrad Small question about constantly accelerating charges
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10
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1K
Favorite Mashups - All Your Favorites in One Place
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3
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70
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10K
Undergrad ##r-##independent angular momentum in quantum mechanics
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16
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2K
Is a Prof Failing 3/4 of the Senior Year Physics Class Normal? (Stat Phy)
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6
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441
Undergrad How do you derive $x = ihbar d/dp$? Why does this equation hold true?
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2
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259
RIP Andrzej Trautman (1933 - 2026), relativity and gravitational waves
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1
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271
Insights Thinking Outside The Box Versus Knowing What’s In The Box
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2
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35
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15K
4 of 4 models of automated blood pressure cuffs fail to read my BP
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13
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1K
Some Parents take their kiddo to the beach while others take their kitty to the beach
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3
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640
Undergrad What is the proof of the Σqᵢcosθᵢ = constant theorem for colinear charges?
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0
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191
Graduate Aether equal to spacetime?
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Replies
5
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483
Graduate Understanding Barandes' microscopic theory of causality
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16
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456
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26K
High School Infinite universe, infinite volume from the beginning?
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Replies
22
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2K
"A good big man will beat a good little man" (boxing)
  • · Replies 29 ·
Replies
29
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806
Great ebass playing
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4
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93
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5K
Undergrad Another Time Dilation Question
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2
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42
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4K
Newton's laws homework: inclined plane with pulley
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12
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894
Graduate Running lattice QCD on Apple Silicon with native Metal GPU
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2
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842
New Member Message
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1
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200
High School Fusion breakthrough using 3-D magnetic coils
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2
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1K
High School Needs explanation for P in quantum tunneling formula
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14
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600
Today's Fusion Music: T Square, Cassiopeia, Rei & Kanade Sato
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4
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116
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Three phase transformer phase angle and group
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7
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729
Who is your favorite Jazz musician and what is your favorite song?
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12
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351
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Fukushima Japan Earthquake: nuclear plants Fukushima part 2
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60
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2K
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463K