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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.
What is the present, how long does it last?
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What Happens When a Gyroscope is Spun on a Horizontal Surface?
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Do we know that time actually exists?
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Is Everything Really Energy According to Einstein's E=MC2?
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Is Physics Truly Unique in Its Description of Nature?
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Do vacuum vessels have issues with the interior layers flaking off?
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Derive the van der Waal interaction between 2 spheres.
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Where to Find Maximum SBS Gain Peak in Highly Nonlinear Fiber?
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How do eddy currents affect magnet movement through non-magnetic materials?
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Infinite divisibility of matter?
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The number of nuclei in 1 gram of copper (Cu)
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I am new here, this is more of a conceptual confirmation than mathemab
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Atoms never touch each other because of electons
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Simulating the wigglyness of a compass pin
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Unclear formula for radiative energy transfer
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Waves on a String: Pitch, Harmonics & Resonance
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Counting Dark Fringes: Measurement & Order
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Solving Standing Waves Problem: Why Nodes at Multiples of 3 Remain Unexcited
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Why is the term w(t-x/c) used in the cosine representation of a traveling wave?
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When Will Node and Antinode Energies Be Equal?
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Physics of Climbing vs. Walking (Horizontal)
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Anti Lock Braking-with and without
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Density-Force Equation: Name and Equation
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How does bending the time continuum affect time?
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Vibrating Strings: Physics of Stationary Waves & Oscillation Types
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Exploring Phosphorescence in Gelatin, Celluloid, Paraffin and Ivory
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What is the intuitive concept behind the Principle of Least Action?
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Do we have a theory as to what energy is?
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Is There a Relationship Between Density and Boiling Point?
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Wave Consine Equation: Reflection & Transmission
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Why is the Lagrangian Defined as T-V Instead of T+V?
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Where Does the Missing Kinetic Energy Come From in a Frame-of-Reference Riddle?
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Arrow of time and virtual reality
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The Potential of Antimatter Fusion: Answers from Experts"
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Reducing Downward Force of 900kg Soil Container
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Expanding earth possible on mars?
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Vector Properties: Divide by Direction Impossible
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Steps per wavelength in mesh density
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Maximize Sunlight: 3 Object Shadow Formation
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Material for not permanent 'sticking'
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Michelson-Gale-Pearson Refutation of Stokes-Planck - Help
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Physics-related disagreement with teacher
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Calculating Mass Without Gravitational Force
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Why Can't Permanent Magnets Create a Perpetual Motion Machine?
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Visualizing Standing Wave Created by Plucking a String
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Mathematical Difference Between Mean Free Path vs RMS Free Path?
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What is the significance of changing charge magnitudes in a dipole?
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Reconsidering the Speed of Light: A Crazy Idea on Dark Matter and the Big Bang
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Understanding Energy Transfer: From Atoms to Photons and Beyond
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Formula for Aircraft Propeller Thrust
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Barometric law for hard sphere sedimentation
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Why is Sin the convention for the harmonic oscillator?
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What is the difference between resonance in a vacuum and resonance in a medium?
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Why Does Torque Point Perpendicular in Gyroscopic Precession?
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Is Kaluza-Klein Theory Proven by Experimental Results?
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Discrete Energy Levels: Questions & Answers
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Net Charge of Daughter Atoms in Radioactive Decay: Does it Always Change?
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What Little-Known Physics Phenomenon Fascinates You?
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Undergrad Research - Parabolic Cherenkov Detector
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Understanding the Relationship between K, kcm, and kint
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Young-Laplace Eq. for 2 Radii of Curvature: Solving for a Droplet
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Assuming a perfect transfer of energy
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Did I experience time dilation or something?
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Could the collapse of a black hole lead to the creation of a new Big Bang?
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Emissivity of Skin: Unity & Ice | Need Help & Guidance
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Interpretation of Multiplicity Function
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Calculate required valve diameter (Darcy-Weisbach)
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Will the Casimir Effect Operate Between Bolt Threads at 10nm?
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How Do Dot and Cross Products Differ in Describing Physical Phenomena?
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Vacuum bags inflating in Cryogenic Storage
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Impossibility of having less than 3 dimensions?
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How Does X-Ray Ionisation Impact Millikan's Oil Drop Experiment?
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Calculating Area Vectors in Gauss' Law
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My Mind going to blow Why Conservative field Path independ? by TMSxPh
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Why Does a Ball Rotate When Thrown and What Forces Keep it in the Air?
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What Happens to Fluid at the Narrowest Point of a Funnel?
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Effect of Transformer AC/AC: 27W Ingoing, 20VA Outgoing
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Minimum Radius for 2.4GHz RC Car Loop Experiment
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How does U 238 change to U 235 in natural in earth
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Four Wave mixing and split step Fourier method
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Atoms in a Solid: Why Their Vicinity Matters
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Can this diagram make any sense? [counts of alpha decay]
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Wilson Cloud Chamber: Observing Cosmic Particles
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Inverse Square Law: Magnifying Glass & Sunlight
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Measuring Etendue of LED sources
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How does humidity affect conductivity of air?
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Isotopes: Proton vs Neutron Counts
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Equivalent Circuit: Rotating for Equality
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Can Sun's Gravity Alter Earth's Landscape Over Billions of Years?
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The Doppler Effect: Why is the Second Wave of Light Different?
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Significance of this kind of oscillation.
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Why is U(x) = -du/dx for an object in motion?
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Force fields and law of conversation of energy
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Can We Unify Quantum Gravity with the Other Fundamental Forces?
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Force applied to 2 connected mass.
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Why does shiny metal get so hot in the sun
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What does a Wolpert's machine do?
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Basic but important question on mass, matter, and atom
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Suppose you have an object with infinite mass
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Is dm/dv a Valid Expression for Density in Variable Conditions?
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