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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.
I Rutherford's Atomic Model: Rejected by Physicists?
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A Understanding Reflectance with Fresnel Equation for Non-Polarized Light
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I Oscillations and Waves in Fluids
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B Why doesn't the flux through a Gaussian surface change with a change in shape?
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I Perfect Spheres: A Theoretical Possibility or an Impossibility?
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I Does buoyancy depend on shape and volume?
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B Who Applies the Larger Force on Earth and Moon?
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I Eratosthene's explanation of the sun's ray
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Research Orthogonal Lie Group for Physics Applications
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I Equation of continuity - what if more openings are added?
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B How to find the center of gravity of an object
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I Question about a Tangent Vector
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I Is it possible for pure energy to have mass?
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B What is the Gs of an object hitting the ground at 31 mph?
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I Calculating Energy Released from Mass Defect in Units of Kg and MeV/C2
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I Energy needed for achieving this mass flow rate for a rocket
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B Does "nothing" have a meaning in physics?
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B IF north pole becomes the south pole....
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B Is an Insect Flying at 150 km/hr Inside a Moving Car?
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Insights Secondary Forces Explored - Comments
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B Why a dust cloud does not obey pV=nRT?
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I Requirement of two vernier scales in a spectrometer?
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I A.P French equation Question -- singing wine glass experiment
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B Difference between albedo and emissivity?
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What Are the Names of These Four Equations?
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A Reducing standing waves with phase randomization
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I Can someone me with this question on mag fields?
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I Methods to Prove Existence of Tritium in Fusor Exhaust
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I Effects of lug height on final gear ratio for a snowmobile....
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I Unit and dimension about De broglie wave
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I Medical Physics Question about the formula D(x)=alfa*mu*I(x)/rho
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B Why Does My Vacuum Leak Rate Change at 25 Microns of Mercury?
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Why doesn't Noether thm produce exactly the stress-energy tensor?
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B Why doesn't the normal Zeeman effect produce a band?
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B Trig question, I'm sure I'm being silly but help please....
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A Relation between the absorption coefficient and the transmittance spectrum
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B Who Created the Inverse Square Law Theory
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I Pro's and con's of suspended speakers
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I Movement of a iron ring inside a toroidal solenoid
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Will a body ever escape in a 3 body problem?
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What's the Difference Between Positive and Negative?
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I How to Estimate Uncertainty for a Physical Quantity with Dependent Variables?
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B Need help to create an experiment
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I What is the Verdet Constant of SF59 Glass at 650nm?
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B Can high voltage static electricity cause a shock through a power cord?
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I What is the significance of αEM in Coulombic Potential calculations?
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A Multi Gaussian Beam Derivation | Example Matrix
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Time Travel to Future: Is There a Minimum Speed?
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B Why Absolute Zero is Independent of Substance Properties
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A Variation of Lagrangian w/r to canonical momenta
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Creating a Floating Oil Rig Model with Recycled Materials | Size: 60x50x50cm
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B What is the True Frequency of Sound When Striking Wood at Different Rates?
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I Amount of energy in wind blowing through a tube
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B Find 3D Models of Waves | Get Creative with 4D Displays
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  • Poll Poll
A A fundamental question about research
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B Wavelengths corresponding to fractions of nanometers?
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What's the difference between a virtual and a real image
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I Apparent depth conceptual question
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I Can a Torus be Gravitationally Bound?
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I Why can't a piece of yarn be used like a bullwhip in fly fishing?
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B Which Cold Pack Solution Lasts Longer for Water-Cooled Vests?
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I Why are some systems defined with the name "variable mass"?
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B What Initiates Particle Motion in the Universe?
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I Gravitational Binding Energy of a Torus
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I Properties of body with spherical symmetry
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I Can solar panels be improved by combining them with a heat retaining material?
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I How Does Superradiance Enhance Radiation Intensity?
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I A question about non-conductive materials
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I K Factor & Thermal Conductivity: Find Insulation Supplies
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I Finding mobility constant in the context of the Hall effect
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I What is the most suitable sensor for measuring punch force?
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B Maximum Radius for Wall of Death
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What is the name of this Laboratory Instrument?
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I Are Physical Laws Truly Reversible?
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B Matter and antimatter annihilation quarks
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I Simple Fulcrum Force Calculation Question
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B How can ice cool an alcoholic drink below 0°C?
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B Understanding the Science Behind Water Vapor and Cloud Formation
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A Calculating Drain Time of a Tank with Closed Outlet: What is the Formula?
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B Specific Gravity of Various Types of Gold
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B Rate of Force Development in athletes
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A Temperature: Intensive Property Explained
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A How much energy dissipated in a nail gun?
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B Colder bedrooms when outside is warmer
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I How Can Thinking From First Principles Enhance Critical Thinking?
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I Is Time Merely a Measurement of Change in Space?
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I Second moment of area of a quad copter arm?
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B How to increase brightness of projector
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B Why is there a negative in Hooke's Law (F = -kx)
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I Conductors and Insulators question
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B Gravity in the center of the Earth (a confusion)
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B Will Solar Roads Ever Be Profitable?
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I Why Does CFL Lighting Cause a Violet Line in Laundry Detergent?
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I How to calculate the energy emitted through IR waves
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I Einstein's E=mc^2 equation -- question....
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B Can all elements, (not including gases) form Ionic Bonds?
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B Determining the Damping Factors in Guitar Bodies: A Scientific Inquiry
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Uncertainty in Measurements: Understanding Multiplication Factors
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Pole Dance & Physics: Understand Momentum & Gravity
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I Ideal Gases: O2 & H2 - Kinetic Energy Comparison
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