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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.
Undergrad Laplace transform of step function
  • chota
  • · Replies 1 ·
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Undergrad Wind turbine, conceptual question
  • mikelepore
  • · Replies 3 ·
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3
Graduate Waves, Energy, Blackbodies and Modes
  • Quelsita
  • · Replies 3 ·
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3
Graduate Puzzling Physics: Questions on Speed of Light, Pressure, Absolute Velocity
  • drak
  • · Replies 10 ·
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10
High School Finding the Right Book to Understand the Doppler Effect
  • adam0211
  • · Replies 1 ·
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1
High School What are the effects of earthquake waves on skyscrapers?
  • Chipmunk
  • · Replies 3 ·
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3
High School Mastering the 90-Degree Wave Lag: A Quick and Easy Guide
  • StudentofLife
  • · Replies 1 ·
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1
Discover the Fastest Moving Place on Earth: World Whirled
  • Loren Booda
  • · Replies 14 ·
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14
Undergrad How Do Surface Waves Behave in an Ocean of Oil?
  • lewdtenant
  • · Replies 13 ·
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13
Undergrad Should Uncertainty Dictate Significant Figures in Physics Calculations?
  • jgens
  • · Replies 4 ·
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4
High School What is Energy? Is it Tangible or Physical?
  • er1c
  • · Replies 9 ·
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9
Graduate Can Cosmology Offer Hope for Humanity's Future Beyond Our Solar System?
  • wolram
  • · Replies 35 ·
2
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35
Physics has Something to do with IQ doesn't it
  • Stratosphere
  • · Replies 8 ·
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8
Plastic on cable, UHF flashback prevention?
  • philip041
  • · Replies 2 ·
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2
Graduate Is Time Infinite or Finite: What’s the True Nature of Time?
  • GodSource
  • · Replies 3 ·
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3
Graduate Can You Answer These Questions About Quantum Mechanics and Consciousness?
  • Satyesu
  • · Replies 12 ·
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12
Undergrad Multifluid Manometer: Practical Uses & Benefits
  • Pandris
  • · Replies 1 ·
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1
Graduate How Accurate Is CERN's Science Rap Video?
  • Mammo
  • · Replies 6 ·
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6
Undergrad Understand Sinusoidal Waves: Problem Solving
  • johndb
  • · Replies 10 ·
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10
High School Is Cold a Universal Phenomenon in Space?
  • C4t4StRoPhIc
  • · Replies 7 ·
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7
Undergrad Is My Metal Sample a Conductor or Semiconductor? Discover with This Experiment
  • mabs239
  • · Replies 4 ·
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4
Undergrad The worst written science article I've ever seen a journalist produce
  • Lyuokdea
  • · Replies 11 ·
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11
High School How Do Metronomes Achieve Synchronization?
  • k1point618
  • · Replies 1 ·
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1
Is Joseph Newman's Energy Machine a Hoax?
  • CozmicScott
  • · Replies 1 ·
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1
Graduate Tesla's Dynamic Theory of Gravity: Unpublished and Unexplored
  • Charlie G
  • · Replies 1 ·
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1
Undergrad Biefeld-Brown Electrogravity Theory- A hoax or something else?
  • vader
  • · Replies 4 ·
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4
High School What is Nanotechnology?
  • JOL
  • · Replies 3 ·
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3
Any good Physics Interactive Programs out there?
  • derek.basler
  • · Replies 6 ·
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6
High School Is humid air really heavier than dry air?
  • Shackleford
  • · Replies 2 ·
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2
Graduate How Do Bayonet Connections Function in Cryostats for Liquid Helium Transfer?
  • Rajini
  • · Replies 2 ·
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2
Graduate Strategy for destroying a 6 km wide asteroid
  • spartan3123
  • · Replies 21 ·
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21
Is this a formula or just nothing?
  • LuciaUruguay
  • · Replies 10 ·
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10
Undergrad Calculating Density Alttitude of Air knoing temp/baro/humidity?
  • soundengineer
  • · Replies 3 ·
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3
Graduate Feynman's Orange Riddle: Impossible or Not?
  • Soff
  • · Replies 6 ·
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6
Undergrad Understanding the Gravitational Constant: Equation, Impact, and Controversy
  • chis
  • · Replies 25 ·
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25
High School Galactic Alignment: Explaining 2012 Hype
  • rebecca8
  • · Replies 1 ·
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1
Undergrad Is Solving Physics Problems the Only Way to Understand the Subject?
  • ice109
  • · Replies 17 ·
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17
Undergrad Need Suggestions For An Experiment - Upper Division Undergraduate
  • Chronothread
  • · Replies 3 ·
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3
High School Dirty snow (snirt) & melting point
  • Mephisto
  • · Replies 3 ·
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3
High School Chosing appropriate letters (labels)
  • Micko
  • · Replies 1 ·
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1
Graduate What is your opinion about Arrhenius' announcement?
  • Jang Jin Hong
  • · Replies 18 ·
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18
High School What Would Happen If a Vacuum Tube Connected Earth and Space?
  • Moonballs
  • · Replies 10 ·
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10
Gravity's Race/ Contest Who wins?
  • Chuck St. Lou
  • · Replies 10 ·
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10
High School Fluid as a medium to transfer electricity
  • GDBot
  • · Replies 6 ·
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6
Undergrad What is the Unit 'a.u.' and How to Convert it to SI?
  • El Flea
  • · Replies 5 ·
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5
High School Hubble mystery light puzzles astronomers
  • Ivan Seeking
  • · Replies 1 ·
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1
High School Why do air bubbles form at the bottom of a glass of sparkling wine?
  • Rajini
  • · Replies 4 ·
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4
High School What makes Saturday's full moon the biggest of 2009?
  • Evo
  • · Replies 17 ·
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17
Undergrad Need help with astrophysics terminology
  • Soliloquy
  • · Replies 17 ·
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17
Discover the Bicyclist's Paradox for a Memorable Holiday Adventure
  • grizzlyjoker
  • · Replies 1 ·
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1
High School How Do You Calculate Gain in Sinusoidal Signals?
  • php
  • · Replies 1 ·
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1
Graduate Does Einstein's belief in a new ether contradict the principle of relativity?
  • Tam Hunt
  • · Replies 10 ·
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10
What Makes Gravity Such a Mysterious Force?
  • CozmicScott
  • · Replies 7 ·
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7
How can I quickly and effectively clear frozen pipes in my home?
  • pchalla90
  • · Replies 5 ·
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5
Graduate Had we already abandoned falsifiability?
  • Dmitry67
  • · Replies 33 ·
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Graduate Is Time Static Like Other Dimensions?
  • dimensionless
  • · Replies 53 ·
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High School Who Discovered Sun = Center of Solar System?
  • Izzhov
  • · Replies 13 ·
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13
Graduate Are Cosmologists Sheep or Crackpots?
  • Garth
  • · Replies 7 ·
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7
Undergrad Brewing Wort: Calculating Boil Length for Desired Gravity
  • Ohio Homebrew
  • · Replies 2 ·
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2
Undergrad Why Pursue a Unified Theory in Physics?
  • ChrisPeace
  • · Replies 15 ·
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15
High School Seeking easy to understand science facts behind simple experiments
  • Blouella
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6
Undergrad Daredevil Robbie Maddison completes Vegas jump
  • LowlyPion
  • · Replies 9 ·
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9
High School Is a 100 kg Cotton Bag Heavier than a 100 kg Iron Bar?
  • DrChem
  • · Replies 2 ·
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2
Undergrad What Are the Practical Applications of Anti-Gravity?
  • Denton
  • · Replies 1 ·
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1
What's the probability of someone's getting thunderstruck
  • MathematicalPhysicist
  • · Replies 1 ·
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1
High School Is There a Doppelgänger of You Somewhere in the Universe?
  • Absolution
  • · Replies 5 ·
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5
High School Fundamental equations that are at the root of all physics?
  • quddusaliquddus
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2
What happened to me? I have lost my love for Physics
  • tommyburgey
  • · Replies 6 ·
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6
Undergrad Question about naked swimming at great depth after pressurisation
  • LennoxLewis
  • · Replies 20 ·
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A Physics Opera on TV tonight (USA)
  • jtbell
  • · Replies 2 ·
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2
Graduate Why phase transition not possible in one dimension?
  • supratimmitra
  • · Replies 1 ·
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1
Graduate Dual wave-particle' property of electrons
  • loup
  • · Replies 12 ·
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12
High School Why is it so hard to reach the Moon?
  • fluidistic
  • · Replies 22 ·
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22
Graduate Factors Affecting Gravitation Constant: Understanding G in Cavendish Experiment
  • DrChem
  • · Replies 6 ·
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6
Undergrad What is the Meaning of 'w' in an EOS Equation?
  • pi.rootpi
  • · Replies 1 ·
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1
Graduate Schroedinger's Cat and Uncertainty
  • Dissident Dan
  • · Replies 3 ·
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3
Undergrad Sailing Downwind Faster Than The Wind
  • Leopolis
  • · Replies 1 ·
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1
Undergrad No-one knows the answer to the tenth question ('cept me)
  • Ian
  • · Replies 2 ·
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2
Graduate Force vs. Mass: Investigating Fundamentality
  • sganesh88
  • · Replies 46 ·
2
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46
  • Poll Poll
High School Testing IR Sensitivity: My Experiment
  • DaveC426913
  • · Replies 49 ·
2
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49
Is Last Night's Sunset a Sign of the Green Flash Phenomenon?
  • Andre
  • · Replies 5 ·
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5
Graduate Understanding Dimensional Analysis: Simplifying Fluid Flow Equations
  • Beer w/Straw
  • · Replies 6 ·
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6
Graduate What is the relationship between units of time and space in relativity?
  • BernieM
  • · Replies 16 ·
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16
Graduate Shawyer's EMdrive: Lift a Car Against Gravity?
  • Kosta
  • · Replies 4 ·
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4
Undergrad What Are the Alternatives to Nanotechnology?
  • Nick89
  • · Replies 3 ·
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3
Undergrad Answer this if you know your physics?
  • Ian
  • · Replies 3 ·
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3
High School How do you make a near-perfect vacuum?
  • ducnguyen2000
  • · Replies 18 ·
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18
High School Physics Olympiad US: Register by Dec 19th - Deadline?
  • coldsunlight
  • · Replies 7 ·
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7
Undergrad Wave energy ~ wave height squ. or wave amplitude squ.?
  • zweistein
  • · Replies 2 ·
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2
High School Is Time Magazine Misrepresenting How Energy and Power Are Measured?
  • russ_watters
  • · Replies 30 ·
2
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30
Undergrad Measuring cross-sectional area of a cable
  • SPEEDTRONIC
  • · Replies 3 ·
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3
High School Physics Mobile Ruler: Understanding the Basics
  • teedoff087
  • · Replies 2 ·
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2
High School Can a super strong rope cut through the Earth's surface?
  • S1nG
  • · Replies 3 ·
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3
Graduate Time - a Dimension of Physics or Mathematics?
  • Chrisc
  • · Replies 18 ·
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18
Got any physics-themed dish ideas for a cookoff?
  • quasar_4
  • · Replies 32 ·
2
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32
Explaining the Noisier Winter Wind Phenomenon
  • nantz
  • · Replies 7 ·
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7
High School What are Waves, Troughs, and Crests?
  • ScienceNerd36
  • · Replies 2 ·
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2
High School Head First Physics - view book via Safari trial or Google
  • heth
  • · Replies 2 ·
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2
High School What scientist predicted the end of physics in the late 1800s?
  • emimun
  • · Replies 6 ·
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6
Train goes through a tunnel your ears pop a little?
  • matt_crouch
  • · Replies 3 ·
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3