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Participate in expert physics discussion. Discussion on the nature and properties of matter and energy. This area is for topics that don't fit the other categories. Mainstream physics only.
High School Question about Stereo Sound while listening to a Song by the Beatles
  • Newton Lopes
  • · Replies 22 ·
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22
Graduate Proxima Centauri Observing with JWST
  • robphy
  • · Replies 5 ·
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5
Physicist monkey and vending machine story
  • Ayaya
  • · Replies 18 ·
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18
Undergrad Are Lab Experiments with Strong Magnetic Fields and Plasma Expensive?
  • avpol
  • · Replies 22 ·
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22
Undergrad Can Conservation of Energy Be Applied to the Expanding Universe?
  • zuz
  • · Replies 2 ·
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2
Graduate Should we hit Mars with The Behemoth Comet?
  • tsmspace
  • · Replies 26 ·
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26
High School What is the underlying phenomenon of waves?
  • accdd
  • · Replies 11 ·
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11
Undergrad What is the function of the air cavity inside drums?
  • Aethermimicus
  • · Replies 12 ·
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12
Quora question: Did Richard Muller ever meet Richard Feynman?
  • jedishrfu
  • · Replies 6 ·
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6
High School What are some free and legal video lectures for first year physics?
  • sponsoredwalk
  • · Replies 1 ·
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1
Potential for progression at now age 70
  • Martyn Arthur
  • · Replies 13 ·
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13
Undergrad Infrared Photovoltaics: Powering Ham Radios & Cooling Earth?
  • J3J33J333
  • · Replies 16 ·
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16
What is the best free website for publishing my articles on astrophysics?
  • Abbas Khaleghi
  • · Replies 18 ·
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18
Graduate The correct interpretation of QM.... according to a "language model" AI
  • mitchell porter
  • · Replies 6 ·
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6
High School Everything Energy? My Thoughts on the Question
  • Lisastronomy
  • · Replies 3 ·
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3
High School Is there anything such as "Magazine of Physics problems"?
  • LCSphysicist
  • · Replies 5 ·
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5
Undergrad Why does the effect linger with Glow in the dark?
  • pinball1970
  • · Replies 16 ·
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16
Undergrad Aviation Enthusiast's Tale of Ruining a Flight Sim
  • Field physics
  • · Replies 3 ·
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3
High School Can Neon Signs Emit Harmful X-Ray Radiation?
  • Trifux
  • · Replies 7 ·
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7
High School Why don't humans orbit the Earth?
  • Prog47
  • · Replies 13 ·
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13
High School Why isn't the Earth's core a gas?
  • yohanblake
  • · Replies 1 ·
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1
Undergrad Experimenting to Answer Research Q's
  • Nakul Iyer
  • · Replies 2 ·
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2
Undergrad Exploring Energy in Astronomy: Kinetic, Potential & Mass?
  • Green dwarf
  • · Replies 13 ·
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13
Graduate How Can Investing, Athletics, and Physics Intersect in Your Life?
  • Field physics
  • · Replies 2 ·
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2
Any tips for creating physics social media content?
  • AstroJH
  • · Replies 4 ·
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4
Donut Hole Physics: Weekday Exceptions Explored
  • .Scott
  • · Replies 1 ·
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1
Undergrad Intermediate Axis Theorem.... fun to learn it again with You Tube
  • CPW
  • · Replies 3 ·
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3
What do theoretical physicists actually do?
  • Hacker Jack
  • · Replies 7 ·
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7
Undergrad Discussing Information Theory with non-scientists
  • Anko
  • · Replies 23 ·
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23
Undergrad Why aren't UV lasers being used in warfare?
  • Mike S.
  • · Replies 13 ·
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13
Undergrad What wavelength can penetrate soil to 15 feet?
  • Gold Dredger
  • · Replies 36 ·
2
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36
Undergrad What is meant by 'affine' model in physical sciences?
  • feynman1
  • · Replies 3 ·
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3
Undergrad Is anything in the physical world infinite?
  • LightningInAJar
  • · Replies 79 ·
3
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79
High School Why are things the color they are?
  • Kyran
  • · Replies 3 ·
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3
High School Distance between two points on Earth doesn't increase with altitude?
  • biologist
  • · Replies 18 ·
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18
RIP Eugene Parker - Legendary Solar Scientist (1927-2022)
  • robphy
  • · Replies 1 ·
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1
Graduate Examining Semantics in Physics Discussions
  • .Scott
  • · Replies 5 ·
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5
High School Why exactly do we need the gravitational constant?
  • Keith Koenig
  • · Replies 11 ·
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11
High School A question about why gravity is only attractive
  • Narandi
  • · Replies 7 ·
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7
Graduate KE of photo-electron and nominal interest rate
  • Hall
  • · Replies 1 ·
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1
Graduate Help identifying a length for this paper edge
  • member 428835
  • · Replies 12 ·
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12
Graduate Implications of a "theory of everything"
  • Physics Slayer
  • · Replies 6 ·
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6
Why isn't Geophysics a division of the APS?
  • AryaKimiaghalam
  • · Replies 1 ·
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1
Christopher Nolan & Physics: A Look at J. Robert Oppenheimer
  • ergospherical
  • · Replies 6 ·
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6
High School Can Inductive Reasoning Explain the Movement of Strings on Spools and Bikes?
  • leafy
  • · Replies 47 ·
2
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47
Undergrad What makes Cassiopeia A a fascinating supernova remnant from the 17th century?
  • Nugatory
  • · Replies 4 ·
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4
High School Can Himalayan Salt Dissolve in Candle Wax?
  • Tamtam
  • · Replies 48 ·
2
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48
Graduate UAP Report and the Standard Model
  • Cobul
  • · Replies 9 ·
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9
Graduate Does Nobel laureate Saul Perlmutter support the Multiverse hypothesis?
  • Suekdccia
  • · Replies 1 ·
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1
Graduate Does Quantum Entanglement Define Our Existence?
  • wavques
  • · Replies 2 ·
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2
Graduate Increasing confidence in theoretical calculations
  • ergospherical
  • · Replies 3 ·
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3
Graduate Ideas in physics used for creating art
  • dariushde
  • · Replies 10 ·
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10
Undergrad Rotational Orientation of Monatomic Gas: Angular Momentum Effects
  • InkTide
  • · Replies 6 ·
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6
High School Why does a specific temp feel different inside depending on the temp outside?
  • CDrush
  • · Replies 5 ·
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5
Undergrad Could the Universe's Infinite Nature Align with Thermodynamics?
  • willard
  • · Replies 33 ·
2
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33
Are Next Generation CMB Satellites on the Horizon?
  • Lameguy
  • · Replies 1 ·
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1
High School Is there something happening below 0°C in this daily temperature graph?
  • Andrea Vironda
  • · Replies 24 ·
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24
Graduate Tonga eruption shockwave and weather station(s) in Poland
  • Borek
  • · Replies 2 ·
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2
High School Power surge video - why does the spark travel?
  • Borek
  • · Replies 14 ·
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14
Graduate Did Michio Kaku Agree with Max Tegmark's Mathematical Universe Hypothesis?
  • Suekdccia
  • · Replies 3 ·
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3
Undergrad Application of failure criteria to viscoelastic materials
  • Gekko12
  • · Replies 1 ·
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1
Stephen Hawking is the Jan 8, 2022 Google Doodle
  • robphy
  • · Replies 1 ·
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1
Undergrad A kind of strange Underwater Air Bubble question
  • CS_SJ
  • · Replies 6 ·
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6
A collaboration between different forums (PF and audio)
  • arivel
  • · Replies 5 ·
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5
Undergrad Usage of First Order Elastic Constants in Soft Body Equations
  • doenn1616
  • · Replies 3 ·
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3
Examples of really famous female physicists?
  • Suekdccia
  • · Replies 11 ·
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11
High School Citizen explorer tries to explain the Ivanpah Solar Power Towers
  • symbolipoint
  • · Replies 2 ·
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2
Graduate Why Popsci is Essential for a Well-Rounded Physics Education
  • ergospherical
  • · Replies 17 ·
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17
Accurate depiction of cosmological redshift?
  • Kwantumnaut
  • · Replies 1 ·
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1
Undergrad Do you have an example of a truly random phenomenon?
  • The_Baron
  • · Replies 122 ·
5
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122
High School Beam of air: Extending the range of a fan
  • Anachronist
  • · Replies 17 ·
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17
Some questions for working Physicists from a curious young Physics student
  • Flying_Cookie
  • · Replies 3 ·
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3
Undergrad What are your favourite physics/mathematics misconceptions?
  • ergospherical
  • · Replies 74 ·
3
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74
High School Space propulsion without mass ejecting
  • leafy
  • · Replies 3 ·
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3
The Feynman Lectures: Physics Gift for Your Son
  • Dr. Courtney
  • · Replies 6 ·
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6
An alternative to the word 'Schlieren'?
  • Galexy
  • · Replies 27 ·
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27
Undergrad Designing parabolic dish and feedhorn
  • GhostLoveScore
  • · Replies 22 ·
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22
High School Simple Acoustics Question -- Which neighbor hears the other better?
  • alex282
  • · Replies 6 ·
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6
High School Question about magnetizing and the First law of Thermodynamics
  • Emeth
  • · Replies 1 ·
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1
Undergrad Can you practically measure an infinite amount of some quantity?
  • MathematicalPhysicist
  • · Replies 10 ·
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10
Undergrad Is there any physicist doing research who was once an astronaut?
  • Suekdccia
  • · Replies 2 ·
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2
Graduate What is the true composition of a space/time vacuum?
  • Bullhead
  • · Replies 7 ·
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7
Graduate Interacting with the fourth dimension?
  • Bullhead
  • · Replies 2 ·
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2
Undergrad What Are the Lesser-Known Subjects Studied in Physics?
  • LightningInAJar
  • · Replies 14 ·
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14
Undergrad Can iron filings cause permanent eye damage?
  • durhamer
  • · Replies 6 ·
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6
Graduate Preparing for the Next Big CME: Detection and Mitigation Strategies
  • jedishrfu
  • · Replies 6 ·
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6
High School What can I say about this dentist light lens?
  • mcastillo356
  • · Replies 2 ·
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2
Graduate What are the rational solutions to the square root of four?
  • MathematicalPhysicist
  • · Replies 12 ·
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12
High School What if I could see in radio instead of light?
  • DaveC426913
  • · Replies 39 ·
2
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39
And the 2021 Nobel prize for Physics goes to....
  • Blackberg
  • · Replies 9 ·
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9
Undergrad Is this 2 Nobel Prizes given in a single year?
  • hacivat
  • · Replies 6 ·
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6
Future Italian Nobel laureates in physics?
  • Suekdccia
  • · Replies 1 ·
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1
Undergrad Gage Block Physics: Is It Understood?
  • James William Hall
  • · Replies 4 ·
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4
Graduate Saving Our Future Earth: Keeping Our Planet in the Goldilocks Zone
  • Dennis Plews
  • · Replies 19 ·
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19
Undergrad The role of mathematics in physics
  • PeroK
  • · Replies 17 ·
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17
Graduate Physical Meaning of Time Inverse
  • Antonio Lao
  • · Replies 3 ·
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3
RIP Thanu Padmanabhan: Legendary Physicist at Age 64
  • George Jones
  • · Replies 3 ·
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3
Is the JETP Server Down or Has the URL Changed?
  • Nicco
  • · Replies 5 ·
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5
High School Why can't we just recycle polluted air?
  • ayami123
  • · Replies 17 ·
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17
Undergrad What are the most energetic lightning "superbolts" ever measured?
  • xpell
  • · Replies 3 ·
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3