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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 How to write the unit vector for the spherical coordinates
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B Why Do Objects Move? | Molecule Physics
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I What is Reluctance in a Magnetic Circuit?
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B Carbon-14 to Nitrogen-14 Decay: Proton Gain & No Electron Loss
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B Understanding the Weakness of Gravity and its Role in the Universe
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I Is Sonoluminescence Possible with Liquid Hydrogen?
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I What Size Space Bombs Would Detonate in Midair Based on Their Composition?
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B Why is Rankine Measured in Degrees?
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B How Are Joules and Newton's Energy Transfer Related?
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I Can You Explain: Why Is It One Sec?
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B Below and above the Planck Scale
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I What sort of energy can be stored?
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B Is Gravity Trapped Inside Black Holes?
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I How to Calculate the Area of Hysteresis?
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B Recent question on NYS regents exam, is it accurate?
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B Deriving pV=NkT from N=Na*n and k=R/Na
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B I'm conducting an Experiment -- Moving my hand through a wall
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I Manometer reading doubt in the case of viscous fluid
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B Solar cell educational graphics - review for possible errors
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B What is the source of this intriguing natural noise diagram?
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I Operational Reality of E field? (Bridgman)
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B Found something odd while procrastinating, fan/computer
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B Understanding the Equations and Units
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I Is internal battery "emf" a conservative force?
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I Field outside of a straight wire
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B Finding Horizontal Force in a Crank at 10N
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B Barycenter: Objects orbiting each other
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I How to Convert Cgs to SI Units for Flux and Energy Values?
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I Normal contact force for a sliding slope
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B Limit of Focal Spot Size for Lensing EM Radiation Across Frequencies
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A Can Buoyancy Create Free Energy?
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I Eco-Cooler Physics: How It Works and Air Flow Dynamics
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Is there such a thing as true darkness?
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I Floating Strawberry: Real or Fake?
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A Distance based opaque to transparent behaviour
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B How to distinguish order and disorder?
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I Relation between 'P' and 'V' for an Adiabatic process
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B What is Flemming's Left Hand Rule and How Does it Relate to Current Flow?
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B How Do I Linearize My Negative Parabola Graph?
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B Why do stars experience gravity more than its mass?
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I Pool Siphon: Can Circular Loop Work?
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B Gravitational field strength calculation
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B Batteries in Parallel Arrangement
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A Are there instances of Simpson's Paradox in Physics?
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A Hammer Effect in Pipelines: Packing, Attenuation & Flow
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I Understanding a practical cooling situation
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B How do forces propagate through the chain?
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A Q: Stokes paradox (flow around a cylinder)
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B What are the forces involved in the following case?
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I Can "extremal" strain tensors be in the interior of the body
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I Uncovering the Mystery of the Electric Field of a Dipole Antenna
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I How fast do fundamental forces propagate?
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I Multi-level extendable hammock posts
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I Help with Experiment on Batteries
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B Can Reversing an Airfoil on a Prop Plane Still Create Lift?
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I How do you deal with commas in vector equations
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I Filling a Tractor Tire Up With Two Tanks
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B Can I Test Lightboxes for UV Rays?
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A Proof for Close Packing of Congruent Identical Spheres
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B Diffusion: Noteworthy Papers Explaining Why/2nd Law of Thermo
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Why Do Some People Conduct Electricity and Others Don't?
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I Cylinder Compression: Pressure & Temperature Change
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B What are the potential alternatives to traditional teleportation and portals?
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Time as a Force: Should There Be a Timetron?
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I Vulcan howl - aerodynamic calculations
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B Question about the math involved in E-field calculations
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I Force exerted on the ground by pushing, pulling and striking
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B Difference Between dB and dBA Scales Explained
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B Voyager 1: How Long Can We Communicate?
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I Why does Gauss' law hold for any closed surface?
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B Can Antimatter Be Trapped in Thunderstorms?
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I How do the concepts of "boundary"and"infinitesimal" interact
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I Definition of force over an area
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B Question regarding JJ Thompson's Experiment
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B Two friends A and B went to a restaurant and ordered a cup
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I Does Wearing Black at Night Keep You Cooler?
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I Understanding Sinusoidal Waves: Motion and Displacement Explained
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I Unraveling the Confusion: Coriolis Effect on a Frictionless Air-Hockey Earth
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I Radioactivity measurements -- finding a fit for lab measurements
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Resonance Propulsion: Using EM Waves to Induce Movement
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I Explain the formula, rpm unit conversion
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A Neumann boundary conditions in calculus of variations
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B Does more angular monentum mean faster spin?
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B How Does This Experiment Help Us Understand Vibration?
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B How to calculate the real size of an object from image
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Could a person do this? -- Push a cruise ship by hand
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I How Does the Coriolis Effect Influence Great Circle Motion on Earth?
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I Plasmonic pixels could be used to make non-fading paint
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I Perfect" Radiators & Absorbers: Why Materials Differ
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I Proving Innocence with Physics in Accident
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B How Many Layers of Aluminum Foil Are Needed for a Resonant Cavity?
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B Has any experiment actually measured PI to many places?
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A Progress in measurement of gravitational constant?
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B Could these statments define energy?
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Why physicist who discovered things in gravity are the most famous ones ?
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B Understanding Point Mass: An Example
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I Finding Maximum Strain with Cantilever Beam
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B Hello all, lay-man's question about gas laws
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B Can someone explain attraction using the 'two people throwing balls' analogy?
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A Normal applied by a disk on a rod
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