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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.
Lambert's Cosine Law: Understanding Diffuse Reflection
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Formula's relevant for Downhill Skateboarding
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What Would Happen If a Vacuum Tube Connected Earth and Space?
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Gravity's Race/ Contest Who wins?
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The Meissner Effect: What Causes Magnet Repellency?
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What is the Unit 'a.u.' and How to Convert it to SI?
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Solving Vector Addition Problems: Rainy Day Velocity Scenario
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For the first question, a better answer is: "Resistance in Parallel Circuits
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Can light be trapped forever between two perfect mirrors?
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Why do air bubbles form at the bottom of a glass of sparkling wine?
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Is it possible to watch time progress faster?
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Vector Force Addition: Understanding Pressure and Force in Colliding Streams
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Unravelling the Mystery of Free Energy
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Why is dark energy/matter better than a new theory?
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Can EM Waves Enable Warp Drive Technology in Space-Time?
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Is angular SHM also related to UCM ?
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Discover the Bicyclist's Paradox for a Memorable Holiday Adventure
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How Do You Calculate Gain in Sinusoidal Signals?
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How Can I Design an Anti-Tilt Frame to Withstand a Force of 5 kg?
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Simple example of Quaternion intuition
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What Makes Gravity Such a Mysterious Force?
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How can I quickly and effectively clear frozen pipes in my home?
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Creating a Computer-Controlled Lunar Lander
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Does Fire Produce Shadows?
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Who Discovered Sun = Center of Solar System?
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Solving Problem with Siphon: Vacation Plant Watering System
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What is the relationship between amplitude and strength in radio waves?
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Venturi effect of liquid through a cone
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Biot-Savart: Why symmetry-break?
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How to convert count rate into becquerels
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Brewing Wort: Calculating Boil Length for Desired Gravity
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What Determines the Rate of Decline and Impact Force of a Meteor?
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Seeking easy to understand science facts behind simple experiments
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Standard model coupling strengths
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Why Do Treadmill Calorie Counters Vary with Speed?
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Is Gravity Considered a Dimension in Physics?
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The math behind a couple of theories
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Deadhang Equation - Improve Finger Strength in Rock Climbing
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Radius of curvature experiment
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Has anyone done 2008 F=ma contest?
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Can Transformers Replace Resistors in Controlling Current Flow?
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Is a 100 kg Cotton Bag Heavier than a 100 kg Iron Bar?
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What Are the Practical Applications of Anti-Gravity?
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Why Do Satellite Ground Tracks Oscillate in Latitude?
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Rocket launch that produces a certain g-force
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What's the probability of someone's getting thunderstruck
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Fundamental equations that are at the root of all physics?
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Question about naked swimming at great depth after pressurisation
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Why phase transition not possible in one dimension?
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Factors Affecting Gravitation Constant: Understanding G in Cavendish Experiment
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Is Your 42 kg Scale Reading Accurate in Different Gravitational Fields?
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Question about Pascal and pistons
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What is the Meaning of 'w' in an EOS Equation?
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Why Do Electrons Revolve Around the Nucleus Instead of Sticking to Protons?
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Energy is neother created nor lost? How about E=mc^2
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Why in MOSFETs Halo doping is done near source and drain junction only?
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What is the Lamb-Dicke regime and how does it impact ion trapping experiments?
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Physics information no1 seems to know
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Understanding Dimensional Analysis: Simplifying Fluid Flow Equations
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Interferometer Experiment: Rules for Adding Half Wavelength
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Calculating Relative Energy of a Jumping Man
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What Are the Alternatives to Nanotechnology?
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Can Fresnel Equations Be Generalized for Arbitrary Polarization of Light?
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What Are the Latest Precision Tests of the Inverse Square Law for Gravity?
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How do you make a near-perfect vacuum?
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Net Radiation b/w Two Spheres: 1069.3 Watts
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Does E=MC2 Determine a Body's Gravity?
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How does gravity affect organism size on different planets?
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Is Stopping Time Truly Impossible?
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Wave energy ~ wave height squ. or wave amplitude squ.?
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Why Do Stars and Galaxies Keep Spinning?
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What Are the Potential Applications of Atoms at 0°K in Nano-Computing?
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How Do Gravity and Strong Force Connect at Small Distances?
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Here is a Theoretical Question I have been pondering
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Understanding Radioactive Iodine: Effects on Thyroid Growth and Activity
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Thanksgiving Dinner Debate About GoPed Gearing
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Measuring cross-sectional area of a cable
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Calculate Time & Force for Steel/Bakelite Ball Through Sea Water
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Physics Mobile Ruler: Understanding the Basics
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Can a super strong rope cut through the Earth's surface?
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I need to know how many FPS it takes to go 0-60 at 6.7 seconds
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Practical Problem (debate between friends)
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Explaining the Noisier Winter Wind Phenomenon
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Satellite Reentry: Examining Newtonian Gravity
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How Is Negative Permittivity Achieved Using the Wire-Mesh Method?
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Will a Ball Stop in a Frictionless, Airless Tube?
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Metric Tensor of Earth: g11,g21,g31...g33
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If you add salt to liquid nitrogen,would it turn into a superconductor?
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What are Waves, Troughs, and Crests?
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Galilean beam expander and spherical aberration
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Head First Physics - view book via Safari trial or Google
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Does a Styrofoam Ball Rise in a 30 ft Water-Filled Pipe?
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Pn Junction Diode: Electrons, Holes, and Immobile Ions
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Entropic degradation of the earth
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What is the SI unit for a Fermi in nuclear physics?
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Errors in Analogue & Digital Multimeters: Why?
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Why is physical time-asymmetry vs dynamical law time-symmetry a problem?
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Train goes through a tunnel your ears pop a little?
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Can Extreme Cold Cause Burns Similar to Heat?
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Can you give a couple of examples of chemical energy?
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