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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.
Why do telescopes have long barrels?
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Creating a Cooling System for Xbox 360 - James' Guide
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Is Huygens' Principle Intuitive or Just Mathematical?
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Why is the hidden variable theory wrong?
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How do we know that gravity results from mass?
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Negative Probability: Is It Possible?
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Does this person see the mirage as we do?
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Campfire Smoke: Blue Trees, Yellow Sky
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Physics of Triangles: Why Are They the Strongest?
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Slanted Windows: Reducing Glare in Department Stores
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Can dropping an aerosol can make it explode?
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Why Does a Nearby Light Source Produce a Blurry Shadow?
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Why Does Refraction Cause an Elliptical Sun?
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Contradictory: Sky blue and sunset red?
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How do free electrons in metals interact with and reflect photons?
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A practicle problem involving soup.
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Can Quantum Tunneling Enable Controlled Thermonuclear Fusion?
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  • Poll Poll
Can a Supernova Bomb Be Created Using Electromagnets and Uranium?
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How Do You Build a Stable Homemade Mini-Blimp?
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What Does the 1 in the Spacetime Equation Mean?
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Understanding the Definition of Relative: Simplified Explanation for Beginners
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A high schooler looking for some complicated physics problems
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Calculating Accelaration Due to Gravity for Year 10 Student
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Meissner Effect: Levitating a Magnet & Lenz's Law
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The Fundamental Principle of Standing Waves: Is it all about phase?
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Why is the slope of a V2 Vs. X Graph 2a?
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What Causes the Magnet to Move When Its Field Reaches Iron?
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Standing Waves - Loud and Soft spots
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Why does a clock appear to run slower on a space probe moving away from Earth?
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Sig Figs: Displacement of Car from Origin - 2.8x10^2 km?
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What causes transparency effect in photos?
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Physics Intro by Dr. Donald Luttermoser | ETSU
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What Is Dirac's Identity in Minkowski Spacetime?
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How Do Wi-Fi and Bluetooth Devices Transmit Digital Data?
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Discover the Science Behind Why Diamonds Shine - Explained!
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Discover the Science Behind Colour-Changing Pizza Box Stickers
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Does LED TV Energy Usage Vary with Color?
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Best Parachute Design: Minimizing Material Usage
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Gravitation & Electromagnetic Forces: Interdependence?
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What is a transmission line resonator ?
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Understanding Acceleration: Pulling a Box at an Angle
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The Great Egg Drop Contest: Design a Protection Device
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What is the rotation direction of a system with a force applied at point B?
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What does this mean and how do you do it
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Questions about constructing a cyclotron
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What is the smallest reference of time
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Is it Incorrect to Add the Speeds of Players for NFL Helmet-to-Helmet Hits?
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Can a Vacuum Chamber Suppress a Detonation?
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Is there an invisible, solid material with the refractive index of air?
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R-square value for model fitting
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Really elementary conceptual question
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Zero Point Energy Explained - Simple English
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  • Poll Poll
Is it possible: ionizing atoms in free-air
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How much energy could be stored in a superconducting ring
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Solenoid Problem: Does Cross-Sectional Area of Copper Wire Matter?
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Calculate Centripital Force for Circular Motion
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Hulk's Abilities: Examining His Strength, Leaping, and Bullet Endurance
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Equation Manipulation with Differentiation or Integration?
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$500 Superconductor research project?
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Sports on the Moon: Football, Basketball, Soccer?
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Solving PV=nRT for Solids - How to Determine Temp?
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Does the Earth Have an Excess of Positive Charge?
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Interpreting Units: km-1 Explained
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Convert 8 Beers/Night to Weight Gain in Pounds
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Who made the D'Arsonval/Weston galvanometer movement?
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Interested in Understanding Limitations to 12V DC battery applications
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Waves and Phases: Understanding 90 and 180 Degrees Out of Phase
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Calculating Nitrogen Specific Volume for Scientists
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The Incompatibility of the 2nd Law of Thermodynamics and Quantum Fluctuations
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Solving the Steffan-Boltzman Law: Transfer of Power from Left to Right Plate
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Confirming MAC=LAC/Density Calculation
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Degrees of Freedom of a Diatomic Gas: 5 or 7?
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Could Rapid Spinning Affect Gravity on the Moon?
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How do I figure out the number of shells in noble gas items?
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Stopping or absorbing gamma rays
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Quantizing Time: Fact or Theory?
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Does the record move faster or ?
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How much heat can radium produce from its decay?
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What is an isolated system and its role in charge conservation?
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Interesting practical question skydiving
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Factors affecting the design of an efficient paddle wheel
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Can anyone explain Gravity to a biologist?
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Stopping Time: Methods and Possibilities
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How Does Pressure Inside Earth Maintain Its High Temperature?
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The treatment of errors and uncertainties?
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Can Gravity Be Manipulated in a Science Fair Project?
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Bubbles in Resin: How & Why They Rise to the Surface
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Open learn (ou courses for free)
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Suppose a nut becomes loose and gets detached from a satellite
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Practical question- anyone w. experience w. BBO crystals?
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Galaxies on the Edge: Understanding the Expansion of the Universe
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I can't figure out why this happens with pure substances. My book is a
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Understanding Vectors: A Physics Primer
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What is the use of a Force Couple System?
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Are we heavier at night than at day?
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May i ask where can i read some sample good lab report?
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Gravity field differential equations
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How do standing waves and resonance relate in a speaker?
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Why Do Rivers Flow? Earth's Bulge Causes Uphill Flow
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How can we determine viscosity from a graph using Poiseuille's equation?
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