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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 Why do solids maintain their individual identity when placed together?
  • Graeme M
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Graduate Convert kcal/(mol-Angstrom) to eV/Angstrom: Advice Needed
  • The_Engineer
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High School What material I should use for the "vacuum"?
  • Rodrigoson6
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Undergrad Is freshmen-level "all-physics" text worth buying/having as an advanced student?
  • Fi Zixer
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Stephen Hawking: Hero Worship or Humility?
  • DiracPool
  • · Replies 12 ·
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12
New Book by Prof Kip Thorne on The Science of Interstellar
  • jedishrfu
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4
Undergrad Extending the shelf life of Acetic Acid battery
  • ManUp
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Undergrad Which Calculus Course Do MIT Physics Majors Prefer?
  • wltm
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Undergrad Why are normal modes important when analyzing waves or oscillations?
  • PhysicsKid0123
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High School What Does the Unit 'h' Represent in Measurements?
  • EvilMarisa
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5
Graduate Hubble vs. LHC: Who Provides Bigger Return on Investment?
  • Duhoc
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Graduate Derivation of Sabine's formula for reverberation time
  • smart_worker
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High School Require assistance in physics concepts
  • possiblyanidiot
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Undergrad What is the Role of Astrophotography in Teaching Astronomy?
  • Dennis Roscoe
  • · Replies 7 ·
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Undergrad Natural vs normal vs resonant frequencies
  • PhysicsKid0123
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Undergrad Understanding Bridge Sensitivity and Checking Vout Expression for Accuracy
  • JI567
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Graduate Where can I find historical journal articles by famous physicists?
  • jjustinn
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High School Is Introduction to Physics the Same for Undergrad and High School Students?
  • Klaz
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High School How can we know why things turn darker when they wet?
  • princezephyr
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2
High School How to get started learning physics?
  • Bill Cao
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2
Undergrad Systematic/Statistical errors [distinguish]
  • ChrisVer
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Undergrad Why only two kinds of vector products defined?
  • Sunny Singh
  • · Replies 5 ·
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5
Undergrad Standing waves: can two transverse waves colliding have diff. fq, or amplitude?
  • shangriphysics
  • · Replies 4 ·
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Graduate Question: physics research budget
  • zxlk123
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High School Squared numbers and square root (Need help with explaination)
  • Mulz
  • · Replies 6 ·
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6
Graduate Vibrations of a circular membrane with free ends
  • alexao1111
  • · Replies 5 ·
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Who is Your Favorite Physicist and Why? A Discussion on Scientific Role Models
  • Alexander*GR*
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High School Solving Potential Voltage Issues with RS 256-225 Flow Meter
  • emmalou
  • · Replies 3 ·
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Undergrad What's the difference between principle, law, rule, theorem and equation?
  • Alexandre
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High School Does anyone knows the proof for E=V/m?
  • Alexander*GR*
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Graduate What Makes Orodruin's Physics Journey Unique?
  • Greg Bernhardt
  • · Replies 17 ·
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Undergrad What Determines the Note of a Guitar String When Plucked?
  • Jimmy87
  • · Replies 8 ·
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Graduate Feeling like I forget everything I learn
  • dumbperson
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Graduate The Illusion of Free Will: Is Determinism Really the Same Thing?
  • LokiReise
  • · Replies 20 ·
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Can Humor Help in Teaching Physics?
  • skujesco2014
  • · Replies 12 ·
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"Repräsentation der Imaginären der Plangeometrie" by Sophus Lie
  • singhalp
  • · Replies 11 ·
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Undergrad How do we measure the units in physics?
  • christian0710
  • · Replies 6 ·
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6
Undergrad Best open course lectures on first year physics?
  • christian0710
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High School Cause of Feather Movement in 2:56 of Documentary: Explored
  • NTW
  • · Replies 5 ·
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High School AC Regulator Danger: Is There Risk?
  • Krakadoros
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Undergrad Measurement points for fan performance curve
  • Yuri B.
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Graduate From where can I read important/interesting scientific papers about physics?
  • StephvsEinst
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Does anybody know the name of this optics device?
  • Dorea
  • · Replies 20 ·
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Undergrad Why can't matter go through other matter?
  • k9b4
  • · Replies 1 ·
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Graduate Strange snobby comments from professor
  • danjordan
  • · Replies 4 ·
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4
Graduate Research -- "Ziemlich Frech : Einstein versus Nernst"
  • bradx888
  • · Replies 1 ·
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High School Won't take long to answer: what exactly is a mode?
  • PhysicsKid0123
  • · Replies 1 ·
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Undergrad Is it possible to approximate the thickness from this data?
  • laramman2
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Undergrad Unit Analysis: Exponential & Logarithmic Formulas
  • KFC
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High School What is the purpose of r hat in physics?
  • Mary O'Donovzn
  • · Replies 7 ·
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Undergrad How Can We Best Understand a System?
  • query_ious
  • · Replies 5 ·
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High School Does aluminum foil keep things cool?
  • AmagicalFishy
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Undergrad Diffusion Rate and Concentration
  • Hereformore
  • · Replies 2 ·
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Undergrad Is there a way to calculate consonance/dissonance?
  • Qaiphyx
  • · Replies 8 ·
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8
Graduate Explaining Ionic Bombardment for Power Transformers
  • EverGreen1231
  • · Replies 1 ·
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Undergrad Should I Use Total or Partial Differentiation in Absolute Error Calculation?
  • Chemist@
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Undergrad Create a Perfect Signal with Sine Wave Summation
  • Sam Smith
  • · Replies 21 ·
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High School What is the physical unit for teleport?
  • vlemon265
  • · Replies 7 ·
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High School Is there a definitive measurement in the universe?
  • Quarlep
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High School Is it possible to take a picture of the radio-waves on earth?
  • edenstar
  • · Replies 14 ·
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Graduate Thesis Submission to Scientific Journal
  • aditya ver.2.0
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High School How Does a Vernier Caliper Determine Precise Measurements?
  • Yashbhatt
  • · Replies 5 ·
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Undergrad Understanding RMS Values: Intuition Behind Calculations
  • derek181
  • · Replies 5 ·
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Undergrad Relative humidity and the science behind cigar storage
  • Flatliner
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News Can Magnets Disarm ISIS Fighters?
  • ACuriousChild
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Graduate Finding the Best Spin-Coating Thickness Model
  • gkiverm
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Undergrad Rounding uncertainties and measurements
  • eddywalrus
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Undergrad Vasoconstriction (constricting blood vessel) and flow rate?
  • shangriphysics
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Undergrad What Causes a Particle on a String to Return to the Origin in Wave Motion?
  • Darren93
  • · Replies 1 ·
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News Nobel-Winning Physicist Martin Perl Passes Away at 87
  • dlgoff
  • · Replies 2 ·
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Study Physics: Benefits & Job Opportunities for Young Mscs
  • Lorenzo Bellini
  • · Replies 3 ·
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Undergrad Why are standing waves on a guitar string sinusoidal?
  • Bill Plates
  • · Replies 8 ·
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High School LED/IR Pair for Leaky Faucet Experiment
  • mbigras
  • · Replies 4 ·
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4
Undergrad Can a Video Game Teach You Electrostatics Through Gameplay?
  • keenPenguin
  • · Replies 4 ·
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What Pop Science Books Should I Read Next?
  • cjackson
  • · Replies 9 ·
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Undergrad Can Self-Taught Physics Knowledge Truly Enhance Your Life?
  • DivergentSpectrum
  • · Replies 27 ·
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News How Slippery Is a Banana Peel?
  • nsaspook
  • · Replies 9 ·
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Graduate Why Do Heavier Particles Float in a Colloidal System?
  • fifi olu
  • · Replies 4 ·
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4
Graduate Why the gulf between lay people and physicists?
  • Hatshepsut
  • · Replies 39 ·
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High School Simplification assumptions in physics problems
  • Amad27
  • · Replies 35 ·
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Undergrad Can I Calculate the Fourier Transform of an Image by Hand?
  • u0362565
  • · Replies 5 ·
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Graduate Where Can I Safely Publish a Groundbreaking Physics Theorem?
  • bobie
  • · Replies 49 ·
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Graduate How to avoid stealing of my idea before publishing it?
  • SpiderET
  • · Replies 3 ·
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High School Question regarding Sun's Rays
  • SiriusA
  • · Replies 7 ·
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Undergrad Finding a Precise Scale for Measuring Human Body Weight Fluctuations
  • I_am_learning
  • · Replies 6 ·
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Undergrad Can't explain an observation with material properties
  • Steve_
  • · Replies 6 ·
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Are Lecher Wires Still Used in Electronics Courses?
  • KL7AJ
  • · Replies 4 ·
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Undergrad Errors in Measurement [of time]
  • ChrisVer
  • · Replies 6 ·
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6
High School Crude Oil Properties: Density, Viscosity, Heat Capacity, Wall Temp
  • Wisam
  • · Replies 1 ·
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Undergrad Combine Equations to Find Relationship Between D, F, and L
  • menzo
  • · Replies 2 ·
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Graduate Resonance - from Feynman lectures
  • rpthomps
  • · Replies 2 ·
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Undergrad What Simulation Software Covers the Broadest Range of Physics Topics?
  • wildcat_nerd
  • · Replies 1 ·
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Graduate What happens between our perception intervals?
  • DarkFalz
  • · Replies 12 ·
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Undergrad Fluence Explained: What is it & How Does it Work?
  • rem45
  • · Replies 1 ·
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Is Wave Phenomena Related to PDE or Just Physics?
  • mathmari
  • · Replies 3 ·
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Undergrad Why do dolphins create air rings and how do they defy buoyancy?
  • Isaacsname
  • · Replies 1 ·
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Can some one tell me what it is ?
  • hazard1
  • · Replies 6 ·
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Welcome Daniel! Quantum Mechanics & English Forum
  • SuperDaniel
  • · Replies 6 ·
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Graduate Modern Einstein has an idea but needs your help
  • HALON
  • · Replies 12 ·
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12
High School What is the difference between a law and a theory?
  • student34
  • · Replies 5 ·
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