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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 XRD of Deformed Steel Sample: Electropolishing Needed?
  • ashvinfpm
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Undergrad Why do waves increase in amplitude when approaching a beach?
  • hanson
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4
Undergrad Is there really no gravitational force at the center of a massive object?
  • DaveC426913
  • · Replies 42 ·
2
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High School Windows Exploding: Science Behind the Scenes
  • nacho-man
  • · Replies 7 ·
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7
Graduate Unifying Theoretical Physics: Kant & Ritter
  • Nusc
  • · Replies 61 ·
3
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61
Graduate Doomsday dec21,2012 - from physicists perspective
  • spideyinspace
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2
High School Can Lightning Create a Sonic Boom?
  • Nymn
  • · Replies 7 ·
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7
Highest Scoring Entry for 2007 Physics World Quiz Contest?
  • ZapperZ
  • · Replies 39 ·
2
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High School Why do alkaline batteries lose their capacity after 50 times of recharging?
  • Physicsissuef
  • · Replies 6 ·
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6
Undergrad What are the key differences between liquids and gases in kinetic models?
  • sadhu
  • · Replies 14 ·
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14
High School Energy questionend my confusion please?
  • kaweezah
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1
Graduate Is a Theory Generation Program possible?
  • Meatbot
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7
Graduate Can Obstacles Enhance the Speed of Incompressible Fluid Flow?
  • Loren Booda
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3
Mars glows, no need for Rudolph's nose
  • Evo
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2
High School How Can One-Dimensional Particles Transform a Hollow Box into a Solid Object?
  • wolram
  • · Replies 3 ·
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3
Why Launch a Rocket on the Winter Solstice?
  • Integral
  • · Replies 5 ·
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5
Unbelievable Phenomenon: Rain Falling in a 5 Foot Radius
  • Math Jeans
  • · Replies 9 ·
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9
High School Physical explanation for thunder
  • ash_win
  • · Replies 2 ·
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2
Witness a Meteor Shower: Griffith Observatory Sky Report
  • Math Is Hard
  • · Replies 13 ·
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13
High School Does Running in the Rain Make You More or Less Wet?
  • mordechai9
  • · Replies 55 ·
2
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High School Can Objects Shrink or Enlarge According to Physics?
  • bassplayer142
  • · Replies 8 ·
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8
Undergrad What is the best way to study and learn physics?
  • Tarek Ahmed
  • · Replies 1 ·
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1
Peeing on Toilet Bowl: Equal and Opposite Effects?
  • MrSandman
  • · Replies 31 ·
2
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High School Interesting ideas for extracurricular physics project
  • Mateja
  • · Replies 1 ·
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1
Moving Dimensions Theory, aka MDT
  • OmCheeto
  • · Replies 1 ·
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1
High School Bullet Proof Material: How Does It Work?
  • jobyts
  • · Replies 4 ·
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4
Undergrad Do we understand electromagnetics?
  • jonourd
  • · Replies 37 ·
2
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Undergrad Why do we still use seconds and meters as SI base units?
  • Firestrider
  • · Replies 2 ·
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2
Why does the sun have a black point and is it an optical effect?
  • chuy
  • · Replies 26 ·
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26
Mainstream Science: What's the Mainstay?
  • wolram
  • · Replies 9 ·
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9
Undergrad Capillary Action (Capillary Depression)
  • Pete2s
  • · Replies 2 ·
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2
High School Why do we get an eerie feeling when metal gets scratched?
  • aerosmith
  • · Replies 9 ·
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9
High School Are there some calculator programs like this out there?
  • mango84
  • · Replies 1 ·
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1
Undergrad Simple Audio Cancellation Techniques for Noise Reduction | Audio Setup Help
  • ocacoustics
  • · Replies 11 ·
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11
Do Parallel Realities Really Exist in Quantum Mechanics?
  • jcs
  • · Replies 4 ·
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4
High School How to calculate significant digits
  • CaitiePhr33k
  • · Replies 9 ·
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9
Undergrad Feynman Lectures: Worth Reading for Fundamental Concepts?
  • t-money
  • · Replies 11 ·
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11
Graduate Influence of a humidor on the aerodynamics of baseballs
  • marcus
  • · Replies 5 ·
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5
Undergrad What is the estimated radius of a bomb explosion with 400 lb of high explosives?
  • lewdtenant
  • · Replies 15 ·
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15
Undergrad Using Spectrometer to measure soil nutrient solutions
  • vmancini
  • · Replies 2 ·
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2
Graduate Physics & Fate: Could Physics Determine Our Future?
  • Math Jeans
  • · Replies 5 ·
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5
Undergrad Spectrometer vernier scale. Quick answer
  • teleport
  • · Replies 9 ·
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9
Surfer Dude T.O.E: Details & Your View
  • muppet
  • · Replies 2 ·
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2
Are physicists getting paid enough for their expertise and hard work?
  • The_Z_Factor
  • · Replies 21 ·
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21
Undergrad Definitions of few physics terms
  • Micko
  • · Replies 1 ·
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1
Graduate Does Time Exist in a Closed System?
  • Bomber
  • · Replies 23 ·
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23
Graduate Didaktikogenic Physics Misconceptions
  • yenchin
  • · Replies 1 ·
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1
Graduate Creating an Ethical Code of Conduct for Physics Professionals
  • Pioneer1
  • · Replies 27 ·
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27
Graduate Is it possible for a stable system
  • bill nye scienceguy!
  • · Replies 15 ·
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15
Undergrad Poiseullie's Equation experiment
  • Puppyraiser8
  • · Replies 4 ·
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4
Undergrad Keeping Worms Warm in Upstate NY Without Electricity
  • JPL
  • · Replies 4 ·
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4
Undergrad What are the fundamentals in today's science?
  • wolram
  • · Replies 1 ·
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1
Undergrad What Determines Color at the Molecular Level?
  • Mephisto
  • · Replies 5 ·
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5
Undergrad Why would dust be attracted to a CD wiped with a dry cloth?
  • kdkovach
  • · Replies 2 ·
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2
Undergrad Pitch vs Noise: Understanding the Difference and Its Scientific Explanation
  • NoiseQuestion
  • · Replies 16 ·
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16
Can Coal Be Clean? Debate & Survey
  • jwhf777
  • · Replies 49 ·
2
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Graduate Surfer dude creates unified theory
  • fourier jr
  • · Replies 2 ·
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2
Undergrad Can someone explain how plucking a guitar string produces multiple harmonics?
  • BigMacnFries
  • · Replies 3 ·
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3
High School Calculating Percent Error When Accepted Value is 0
  • whale
  • · Replies 3 ·
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3
  • Poll Poll
Graduate Is a Theory of Everything Truly Comprehensive?
  • pivoxa15
  • · Replies 1 ·
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1
Graduate What is the exact formula for calculating bubble resonance frequencies?
  • Regger
  • · Replies 5 ·
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5
High School Revolutionizing Music Sharing: A New Type of Headphones for Unborn Babies
  • redcass
  • · Replies 1 ·
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1
Graduate Unravelling the Mystery of How Waves Become Matter
  • baywax
  • · Replies 25 ·
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25
Has Ball Lightning Ever Caused Notable Damage?
  • wolram
  • · Replies 43 ·
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High School Why Do Physics Homework Questions Often Focus More on Algebra?
  • Feldoh
  • · Replies 9 ·
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9
Graduate Is the Existence of Aether Particles Debated in Physics?
  • The Mastadon
  • · Replies 1 ·
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1
High School GRE Physics Exam: Calculator Rules & RPN Advice
  • Bill Foster
  • · Replies 6 ·
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6
Undergrad Why Does Whiskey and Water Swap Despite Being Miscible?
  • In_Development
  • · Replies 2 ·
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2
Graduate The Origin of Time and Its Relationship with Entropy
  • Sorry!
  • · Replies 23 ·
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23
DIY Vacuuming at Home - 75+% Efficiency
  • Anekdot
  • · Replies 13 ·
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13
High School Global warming investigatory project
  • chareeh
  • · Replies 1 ·
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1
Undergrad Finding Inspiration for Future of Physics: Tips & Ideas
  • Lavace
  • · Replies 6 ·
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6
Graduate In the literature, I occassionally see something like this:
  • touqra
  • · Replies 1 ·
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News Where are the lengthons or the spacions?
  • Phred101.2
  • · Replies 8 ·
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8
Found this little atrocity on ZDnet
  • Curious3141
  • · Replies 1 ·
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Undergrad What Is the Physics Behind True UFOs?
  • Joza
  • · Replies 2 ·
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2
Graduate Is Zero-Point Energy Fact or Pseudoscience?
  • GTrax
  • · Replies 6 ·
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6
High School Nonconducting Liquids: Vegetable Oil & Mineral Oil
  • ValiumMm
  • · Replies 9 ·
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9
Graduate Heisenberg incertitude principe ? contradicting ?
  • JPC
  • · Replies 30 ·
2
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30
Undergrad Finding Source of Image: Concentric Rings, Torus, Plusses/Minuses
  • T.S.
  • · Replies 1 ·
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1
Graduate Are All Fundamental Particles Truly Pointlike?
  • madness
  • · Replies 110 ·
4
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110
Undergrad Discover Interactive Physics Simulations & Ideas for Your Website
  • Caspian
  • · Replies 4 ·
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4
Undergrad Understanding the Width of Distribution for Error Analysis
  • Punky
  • · Replies 4 ·
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4
Undergrad Where to best increase efficiency?
  • Loren Booda
  • · Replies 5 ·
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5
High School Solve Pool/Snooker Dispute: Smaller or Larger Tip?
  • adr147
  • · Replies 67 ·
3
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67
  • Poll Poll
Graduate Is Risk Analysis Essential in Developing Fundamental Models of Physics?
  • Fra
  • · Replies 41 ·
2
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41
High School Is Anyone Else Just Starting Astrophysics in College?
  • ScienceGurl
  • · Replies 18 ·
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18
High School What Are the Key Properties and Uses of Diamonds?
  • lolbombs
  • · Replies 4 ·
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4
High School How does the Homopolar Motor Work?
  • -RA-
  • · Replies 12 ·
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12
Shocking Theory: Light Bulbs Suck Dark In
  • BosonJaw
  • · Replies 3 ·
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3
Debunking the Myth of Dark Suckers: A Closer Look at the Bell Labs Discovery
  • BosonJaw
  • · Replies 2 ·
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2
Graduate How to Start Making a New Physics Theory?
  • Urvabara
  • · Replies 10 ·
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10
Undergrad Modern Definition of Time & Length Units
  • LeoYard
  • · Replies 3 ·
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3
Undergrad What Are Degrees of Freedom and Why Do They Matter?
  • cks
  • · Replies 9 ·
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9
High School How to Calculate Percent Error in Measurements
  • Joza
  • · Replies 3 ·
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3
High School The speed of sound in nothing but a suit
  • Ivan Seeking
  • · Replies 22 ·
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22
Graduate Adrian’s Game of Bagatelle (named after its creator - AJ)
  • BanjoPaterson
  • · Replies 9 ·
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9
The Impact of Vibration on Human Health
  • shojooon
  • · Replies 5 ·
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5
Can Candles Really Power Light Bulbs?
  • -Mockery-
  • · Replies 1 ·
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1
High School Why is Snow White Instead of Clear Like Ice?
  • pivoxa15
  • · Replies 24 ·
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24