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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 What is the difference between thrust and thrust density?
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B Force at which a cutting disk comes off from an angle grinder
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I Limits of the variatonal principle
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I Description of Adiabatic Expansion
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B Pixel Size of TVs: OLED & LCD Explained
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I Compatibility of Physics and Abstract Algebra
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A Stressing Over Stress Tensor Symmetry in Navier-Stokes
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I Move the Earth Away from the Sun
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B Calculating the P.E. of a system
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B Is it Possible for a Short Circuit to Contradict Voltage in a Parallel Circuit?
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B Free Expansion of Gas: Internal Energy & Work
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I How to estimate total energy when dealing with beamsplitters
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B Waves in a medium versus waves in a vacuum (ie no medium)
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I Proof that the E field inside a cylindrical resistor is constant
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B Gravity Constant: How Calculated & How to Measure Planet Weight
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I Does a wave in a moving medium propagate ....
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B How do physicists know that the past is immutable?
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A Integrating a Rogowski Coil's Output
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B The physical properties of diamonds: no melting point?
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I How can I calculate the energy of a body of mass?
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B Airsoft bb and the Magnus effect, probaly very dumb but
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I How much force to throw an object vertically?
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B Can Closed Timelike Curves Violate Entropy by Allowing Time Travel?
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I Glass -- how to increase the surface area
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I Thought experiment on buoyant forces on a system
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I Calculating the Mass of a Piston for a Spring-Based Launcher
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B Is it possible to experience time loops?
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I What was the value of the permeability constant in 1865?
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B Is the gravitational force higher than it should be?
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B Do Materials' Elastic Properties Influence Motion and Force Equilibrium?
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B Breaking Down the Mystery of Ice VII Nucleation
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I Understanding what the complex cosine spectrum is showing
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B What would happen to Earth's temperatures without an atmosphere?
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B How Did Polonium-210 Contaminate London in the Litvinenko Case?
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B Is Radioactive Decay Truly Random?
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I Is a Photon the Quanta of Both Electromagnetic Field and Wave?
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A list named the"10 characteristic experiences of physics" does it exist?
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Mathematical series in physics - Why and when do we need them?
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I Does the Principle of Least Action Have a Physical Meaning?
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B Gravity - Do atoms orbit humans ?
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I Roulette Prediction Algorithm Problem
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Eigenfrequencies of a multiple DOF system
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I How to Derive Malus' Law for Two Polarizers Using Integrals?
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B COM of Universe: Does it Mean Anything?
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Vector Labeling Convention: Vxi or Vix?
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B MHD pump idea for school project
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B Understanding the Parallelogram Method for Solving Forces
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I Why different cutoff frequencies for TE and TM in a medium?
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I Why Is Energy Defined as E=mc^2 and Not Another Dimension?
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B Why does time pass in an isolated vacuum?
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I How do I convert mass units in physics?
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I Stripes in Kundt's tube experiment
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I A question about units in equation: Dimensional analysis
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I Atmospheric hazing on an infinite plane
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B Why is there a reverse wind current inside my convertible?
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I Why E=mc^2 is different from E=1/2 mv^2?
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I Is gravitational prospecting pseudoscience?
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I General definition of spatial dimension?
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B Is the Force Between Two Protons Weaker Than Between Two Neutrons in Nucleons?
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I What purpose does the delta notation serve in this context?
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I Summation convention with expressions containing parentheses
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I Why do the signs alternate when using Gauss' law for gravity?
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I Why don't humans glow in the dark?
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A Normalization of Radial Distribution Function
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I Dimensional analysis involving partial derivatives
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I Resultant of Different Permittivity substances
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I Compression of gases that liquefies
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I What Causes Thunder? New Research Answers
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I Time harmonic case of Gauss's Law
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B Is Equilibrium a Scalar or Vector Quantity?
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I How Do Geometrical and Physical Symmetry Differ in Objects?
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A Question about Helmholtz resonance
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B Franklin Bell: Does Positive/Negative Side Matter?
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B Feasibility of a L1 Gravity Swing Cold Launch?
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B Vector multiplication and division
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I How do we justify "Natural" Units
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B Why longitudinal waves are waves?
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B Radio Waves & Penetration: Why Can They Pass Through Walls?
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A What Constitutes a Natural Completion of a Physical Theory?
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B What is meant by "first order" and "second order"
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Force Resultants: Comparing Rules
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B Direction of Vectors: North vs Northeast
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B Is there an experiment proving observer dependency exists?
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I Millikan's Experiment: Observing Vibrating Oil Droplets
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I Was the recent ISS leak imminently dangerous?
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B How/Why Is So Much Force Generated In A Bender?
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I Can Schrodinger's cat apply to things other than alive/dead?
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I Rocket-Jet Hybrid, Rocket + Ramjet
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I How is Solder Made? Learn the Process & Its Benefits
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I Time reversal symmetry in physics
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I Musings, seeking opinions about the nature of time
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B Do Can-and-String Phones Produce Clear Voices or a Tinny Sound?
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I Source of Energy in a Field of Forces
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I The air parcel expands as it rises inside a pipe
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B Coil B field strength with different diameters
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I Solving Planar Fluence: Ratio of Electrons per cm2
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I Significant figures and uncertainty in measurements
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I 3D coordinates vector calculation
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Why do copper, gold and cesium have special colors?
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B Justification for emergent anything
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