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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 What are the expansion coefficients of diesel fuel?
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High School Does the proximity of a string to a spinning object affect its speed?
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Undergrad What is the Flaw in this Perpetual Motion Machine?
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High School What are some of these scales based on?
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High School What's the relation be zmole and mole?
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High School Is a Slide Rule Worth It for New Physics Students?
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High School Energy & Gravity: Mutual Attraction Explained
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What Inspired Your Career in Physics?
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Graduate Some help with calculations please
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Undergrad Levitation - what the heck is this?
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Undergrad "Was Feynman's license plate ARW 357 a subtle physicist joke?
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Graduate Are There Multiple Big Bangs?
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What courses are available on Youtube through NPTEL?
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What is the Effect Bifinda - Brauna and how can it help me?
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High School The Mystery of Time Travel: A Keen Amateur's Question | Physics Help
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Undergrad Non-Euclidean Recommended books
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Mysterious Letter Sent To Fermilab
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High School Counting Raindrops in Wichita, KS
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Is Enthusiasm Enough to Thrive in Physics Forums?
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High School Imperial, metric, U.S. customary units
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Undergrad Water-Filled Balloon Experiment in Zero Gravity: Interactions of Air Bubbles
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Graduate Why Does Time Expand? Spacetime Explained
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Is it possible to obtain a published paper for free through this forum?
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Most efficent Portable Energy sources
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High School Tea in Milk: Reasons for Floating Upwards
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Graduate How Is the Smolin Impact Ratio Influencing Physics Research Trends?
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High School Who Created an Electromagnetic Anti-Gravity Field?
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Graduate What Are the Key Physics Concepts Discussed on Sciam.com and Physicsforums.com?
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Graduate Proposed US Budget A Major Blow to High Energy Physics
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Undergrad Motorcyclist falls off but bike stays upright
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High School Area efficiency of Miles Per Gallon
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CERN LHC: Risk of "Doomsday" Destruction?
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I come to these forums for one thing and one thing only.
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High School Feynman Lectures: Is It Worth The Money?
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Graduate Chris Morris Visits the LHC (The Guardian UK)
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Graduate Is Time Travel Possible as Depicted in Movies?
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Is the glowing object always visible between 11pm and 12am?
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High School Why Do Systems Have Organization?
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Undergrad Is Cold Fusion for real this time?
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News Global Warming based on solar flares?
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High School Is Null Physics a Legitimate Theory or Just a Crackpot Idea?
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Graduate Loop-String companionship at the 2008 Bad Honnef conference
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Graduate String research down 33% in one year-ideas why?
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Graduate Human mind has a relatively large degree of freedom
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High School Inquiries on Vacuum Sphere: Spinning and Weight Difference
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Graduate Does Quantum Mechanics Disprove Causality?
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Graduate Consciousness of Double Slit Observer
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Undergrad What Does Vc Mean? Kennedy Space Center Plaque
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Q: Is there a prototype vehicle that can go faster than the speed of light?
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Undergrad Why is mercury a liquid even though its atoms are closely packed
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Undergrad How the acceleration of gravity is almost equal to pi squared?
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High School How can you prove the earth is round?
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Undergrad Anti-LHC Guy Walter L Wagner: Credentials & Misinformation
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Is This the Future of Space Communication?
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Graduate Which Software Calculates TE and TM Fields in a Two-Core System?
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Graduate A quote regarding entanglement, looking for an interpretation.
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Undergrad Microphone in Vacuum: What Would Happen?
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Graduate Scalar waves, is this a complete fabrication?
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High School Understanding the Conversion: Pounds to Kilograms Explained
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Undergrad Can Matter Truly Exist in Four States According to Einstein's e=mc2?
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High School Can Shooting Locks in Movies be Realistic?
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Undergrad Are There Prefixes for Decimal Places Between the Commonly Used Ones?
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High School Can Nikola Tesla's Concepts Power a UFO-like Flying Vehicle?
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High School What software is recommended for graphic design and integration with LaTeX?
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Undergrad Maximizing Solar Energy Output: The Role of Physics in Solar Tracker Design
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High School Free Video Lectures - Learn Calculus Online
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Can anyone give an approximation as to when CERN starts testing?
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High School Why the clock hands turn clockwise?
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Undergrad Conversion from cm^{-1} to eV - Ask Here!
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High School Min. Tone Bar Size for Electromechanical Doorbell
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Graduate Is the Big Bang No Longer the Beginning?
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Turn Off Gravity: Elevator at Work Mystery
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Undergrad The Multiple Launch Rocket System and Rocket Noises
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Graduate Raman Microscopy: Best Way to Hold Micron-sized Polystyrene Beads
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What Is the Lawrence Berkeley Pocket Book?
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Mudwrestling Physics: Learn to Win Your Match
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Graduate Citation to string has crashed-any idea why?
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Famous Overweight Physicists and Mathematicians
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Nobody complains about physicists' math?
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Willis Lamb 1913-2008 | Physicist & Nobel Laureate
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Say Hi to Web Developer from Philippines Interested in Physics
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High School I need to create a demonstration
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How does one pronounce de Broglie ?
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High School Table Tennis Problem: Explaining Edge vs. Side to Friend
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High School Treasure hunting metal detectors
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High School Will time travel ever come to an end?
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Graduate What are the implications of neutrino mass on the universe?
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Einstein or Newton, the better man?
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Graduate Photons and neutrons [Pseudo-science warning]
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High School What Determines the Characteristics of a Wave?
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Graduate Where Can I Find Additional Material on the 1957 Eshelby Inclusion Problem?
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Undergrad Does a piano string slowly stretch (creep) over time?
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Comics can be educational. somewhat
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Undergrad Are Physics Equations Always Exact?
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High School Calculate Calories Burned from Climbing Stairs
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Graduate Trends in physics, esp. new fundamental-a calm place to discuss trends
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Undergrad Defining the True Value of an Experiment
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Where do the best physicists work?
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Graduate Generating a Secondary Gravitational Force Field - US Patent 3,626,605
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Undergrad Science Challenge: Prove these magnets won't move
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