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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 Best style of martial arts for self-defense?
  • annoyinggirl
  • · Replies 71 ·
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Looking for Einstein quotes re: extent of his knowledge
  • Robert P
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Undergrad Atmospheric Flow: Meaning & Natural Examples
  • math04
  • · Replies 4 ·
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4
Interesting Result in Quantum Error Correcting Codes versus Relativistic Gravity
  • Ackbach
  • · Replies 1 ·
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Undergrad What is the physical meaning of divergence?
  • Hawkingo
  • · Replies 9 ·
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Undergrad Significant Physical/Chemical Change Found by Sign Reversal?
  • Silverhobbiest
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High School Is the Term Energy Field Misused in Physics?
  • seazal
  • · Replies 13 ·
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High School Why there is a difference between same components of 2 paral
  • Hawkingo
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What Can We Expect from the LHC Tour in 2019 and Beyond?
  • seazal
  • · Replies 5 ·
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Undergrad Diagram of CO2 dip at 4.3 microns
  • Adrian Tudini
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Graduate Is Time a Form of Information Transfer Between Particles?
  • Daniel113
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Undergrad Back to basics: bubbles in a syringe
  • rwooduk
  • · Replies 32 ·
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Graduate Oumuamua may be an alien lightsail?
  • BWV
  • · Replies 72 ·
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Graduate Question About SETI & Time Chauvinism
  • Kevin the Crackpot
  • · Replies 31 ·
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Undergrad Japan's Science Counil Says 'No' to ILC
  • Vanadium 50
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All I (as a physicist) really Need to Know ....
  • gleem
  • · Replies 5 ·
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High School Energy from the Sun: Is it Dangerous?
  • Abdullah Wahid
  • · Replies 5 ·
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High School Under what conditions can glass crack spontaneously?
  • rugerts
  • · Replies 37 ·
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High School What Is the First Dimension and Why Is It Considered Nothing?
  • Spacepantz86
  • · Replies 7 ·
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Graduate Can someone discuss the holographic principle and dimensions with me?
  • Spacepantz86
  • · Replies 5 ·
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5
No Ig® Nobel Prize in physics for 2018
  • Keith_McClary
  • · Replies 4 ·
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4
Undergrad Diffusion & Effusion: What Is It?
  • Viona
  • · Replies 2 ·
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What Are the Best Online Physics Learning Tools and Resources?
  • Greg Bernhardt
  • · Replies 31 ·
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High School Why did my coffee foam over when I added milk?
  • Greg Bernhardt
  • · Replies 13 ·
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Graduate Colloidal suspensions, Polymer solutions
  • math04
  • · Replies 2 ·
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Undergrad Error propagation and standard deviation
  • Sral2018
  • · Replies 3 ·
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3
High School Hp/Kw required to move 1.5L/m of diesel fuel at 17.2 Bar?
  • Chincha40
  • · Replies 7 ·
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Photo Contest - P-H-Y-S-I-C-S F-O-R-U-M-S (11/24-11/30)
  • ZapperZ
  • · Replies 24 ·
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Graduate Is the MRI Signal Highest When Protons Are Coherent or Dephasing?
  • yephonethaw
  • · Replies 4 ·
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Undergrad Phasor Addition Explained - Wave Physics
  • MrsTesla
  • · Replies 2 ·
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High School Find the Perfect 4 Point Probe Head Online - Expert Recommendations
  • tornado
  • · Replies 4 ·
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4
High School Can a Scalar Operate with a Vector Algebraically?
  • Hawkingo
  • · Replies 12 ·
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Undergrad Problem with gravitation field perpendicular vector.
  • Abdu Ewais
  • · Replies 2 ·
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Undergrad Can i create an air flow through a geometry?
  • Giulio Cesare
  • · Replies 5 ·
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Insights What is the Spectral Paradox Discussed in PF Insights?
  • trilobite
  • · Replies 17 ·
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High School How do you make neutral wire 'neutral'?
  • Kevin J
  • · Replies 6 ·
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High School Is the 'A Level Physics by Roger Muncaster' suitable for 2018/2019 Syllabus?
  • Kevin J
  • · Replies 2 ·
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High School The physical concepts in the double jump of the video games
  • Thiago Cerqueira
  • · Replies 13 ·
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High School Pixel Size of TVs: OLED & LCD Explained
  • artis
  • · Replies 10 ·
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Graduate Kinetic energy of Himalayan plate
  • Keith_McClary
  • · Replies 2 ·
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Undergrad Graph of wikipedia articles about physics
  • Robin04
  • · Replies 10 ·
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10
Ghost Moons: Astronomers Confirm Unusual Find
  • Bystander
  • · Replies 13 ·
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High School Waves in a medium versus waves in a vacuum (ie no medium)
  • geordief
  • · Replies 4 ·
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Undergrad Does a wave in a moving medium propagate ....
  • geordief
  • · Replies 16 ·
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Undergrad How can I calculate the energy of a body of mass?
  • DLeuPel
  • · Replies 2 ·
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Undergrad Glass -- how to increase the surface area
  • Greenybwa
  • · Replies 20 ·
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News There are no laws of physics theres only the landscape.
  • InebriatedScientist
  • · Replies 5 ·
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High School Outrageous Facts by Academically Validated Physicists
  • wittgenstein
  • · Replies 19 ·
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Undergrad Understanding what the complex cosine spectrum is showing
  • Natalie Johnson
  • · Replies 1 ·
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A list named the"10 characteristic experiences of physics" does it exist?
  • Christian Desbordes
  • · Replies 7 ·
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7
How many Planck lengths are there in a parsec?
  • Bob Walance
  • · Replies 9 ·
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9
High School Gravity - Do atoms orbit humans ?
  • DLeuPel
  • · Replies 5 ·
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High School What Exactly is Conceptual Physics?
  • cnblock
  • · Replies 7 ·
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What Are Good Physics Books for Casual Reading?
  • annaphys
  • · Replies 3 ·
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High School COM of Universe: Does it Mean Anything?
  • jha192001
  • · Replies 4 ·
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What sparked your interest for physics?
  • Bobman
  • · Replies 9 ·
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9
Stephen Hawking's Final Paper published
  • cobalt124
  • · Replies 5 ·
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5
2018 French Nobel Prize clip (what do you think)
  • PSRB191921
  • · Replies 7 ·
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7
Insights Interview with Physics Mentor bhobba - Comments
  • Greg Bernhardt
  • · Replies 2 ·
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High School How Does a Cartoon Explain Potential Energy?
  • jrmichler
  • · Replies 2 ·
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2
Undergrad How do I convert mass units in physics?
  • isai
  • · Replies 2 ·
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Undergrad Stripes in Kundt's tube experiment
  • Tazerfish
  • · Replies 21 ·
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Undergrad A question about units in equation: Dimensional analysis
  • Goita
  • · Replies 1 ·
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Undergrad Why E=mc^2 is different from E=1/2 mv^2?
  • sush
  • · Replies 3 ·
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Undergrad Is gravitational prospecting pseudoscience?
  • avicenna
  • · Replies 8 ·
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News Who Will Win the 2018 Nobel Prize in Physics?
  • Orodruin
  • · Replies 105 ·
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Undergrad What purpose does the delta notation serve in this context?
  • Steven_Scott
  • · Replies 2 ·
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Graduate Can Quantum Physics Explain Paranormal Phenomena?
  • Ghost
  • · Replies 9 ·
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Undergrad Why don't humans glow in the dark?
  • blizzardof96
  • · Replies 8 ·
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Graduate Normalization of Radial Distribution Function
  • DHN
  • · Replies 2 ·
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Undergrad How Do Geometrical and Physical Symmetry Differ in Objects?
  • issacnewton
  • · Replies 22 ·
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Graduate What to do with a totally unclassifiable enigma?
  • acott
  • · Replies 4 ·
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Graduate Question about Helmholtz resonance
  • Sylvester McBean
  • · Replies 14 ·
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High School Vector multiplication and division
  • jamiebean
  • · Replies 4 ·
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High School Why longitudinal waves are waves?
  • Bassel AbdulSabour
  • · Replies 23 ·
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High School What is meant by "first order" and "second order"
  • Buckethead
  • · Replies 7 ·
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Graduate Eigenstates, Block equations, Regge-theories
  • DaveC426913
  • · Replies 3 ·
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3
  • Poll Poll
Physics graduates: any vocational ed or engineering courses?
  • symbolipoint
  • · Replies 6 ·
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High School Direction of Vectors: North vs Northeast
  • Bassel AbdulSabour
  • · Replies 6 ·
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Undergrad Millikan's Experiment: Observing Vibrating Oil Droplets
  • Jorge Jr
  • · Replies 4 ·
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4
Undergrad Was the recent ISS leak imminently dangerous?
  • Tom Hammer
  • · Replies 14 ·
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Graduate Physicists who do research on complex systems
  • StatGuy2000
  • · Replies 3 ·
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Undergrad How is Solder Made? Learn the Process & Its Benefits
  • TNUTUNU
  • · Replies 17 ·
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High School Do Can-and-String Phones Produce Clear Voices or a Tinny Sound?
  • kiki_danc
  • · Replies 22 ·
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Undergrad Significant figures and uncertainty in measurements
  • fog37
  • · Replies 13 ·
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Undergrad What chemicals inside a hearing aid battery make it explode?
  • gary350
  • · Replies 1 ·
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High School Measuring Objects using Dissimilar Units
  • Tom Bruce
  • · Replies 4 ·
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High School Calculate, not measure the value of c
  • Suppaman
  • · Replies 9 ·
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High School Greatest Possible Uncertainty and Sig Figs
  • Cardinalmont
  • · Replies 5 ·
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High School History of Error Bars in Physics
  • eudo
  • · Replies 3 ·
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High School What Is the Harm in Using Finite dx in Calculus?
  • navneet9431
  • · Replies 1 ·
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High School How do we know our laws of physics are correct?
  • TheQuestionGuy14
  • · Replies 35 ·
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Undergrad How to measure the surface area of an arbitrary 3D object
  • bob012345
  • · Replies 29 ·
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Some Wonderful Talks on Feynman's 100th Birthday
  • jedishrfu
  • · Replies 2 ·
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High School Condensate around rocket spin? Why?
  • perfectobsession2004
  • · Replies 3 ·
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Creating a (synthetic) song from a zebra finch's muscle
  • nscozzaro
  • · Replies 2 ·
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High School Is the Stairmaster a Valuable Exercise Tool Despite Physics Misconceptions?
  • MasterTheStairs
  • · Replies 76 ·
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High School Why does mercury rise in a glass capillary tube despite its strong cohesion?
  • Abbas0000
  • · Replies 3 ·
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High School Does it irk you when journalists don't do units properly?
  • swampwiz
  • · Replies 14 ·
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High School Is everything binary on macroscopic level
  • empleat
  • · Replies 3 ·
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