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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.
Unstable equilibrium in case of dipoles
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Are a vector and its derivative perpendicular at all times?
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Understanding Hooke's Law: Confusion with F=ks and F=-ks Explained
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B I heard a spin-top in a perfect vacuum would stay spinning
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What Is Negative Absorption Coefficient in Lasers?
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Will a metal vacuum mug beat a cooler bar with 300mL Ice?
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The Mystery of Center of Gravity (CoG) and Center of Mass (CoM)
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Is Information Truly Conserved in Black Hole Dynamics?
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Flywheel Leg Press Design - How is this being calculated?
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What progress has been done on Hilbert's 6th problem?
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Wait.... what causes gravity again?
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Multiplying vectors -- where does cos(theta) go?
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What material did Lexus use for their hoverboard's superconductor?
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Presenting to middle-schoolers on black holes - suggestions?
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Did Stephen Hawking Disprove His PhD Thesis?
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I've heard that mass loses energy, but how?
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How Does Light Intensity Affect Perceived Darkness and Color?
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Need help in replacing flame with something else, along with
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Do All Automorphisms in Physics Imply Symmetries in Equations?
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Rad./sec. * kg*m^2 = kg*m^2/sec. Right?
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Help finding an article for my physics class.
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Problem with Lagrangian function
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My Physics teacher presented a wrong diagram? (Explanation↓)
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Are repulsive Van der Waals forces as common as attractive ones?
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How to Calculate Object Travel Time: Formula for 402m Distance
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A question about the EM spectrum
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Super Translations Explained | Stephen Hawking
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How are leaps justified in Physics?
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Why the sky is blue and not violet
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Something like category theory but for physics
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Turnings on roads and banked roads
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Why an array of telescopes is used?
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Field in the plane where a dipole lies
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Physical Interpretation of Integration
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Is Gravitational Force conserved at the origin (r=0)?
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Answer 1 BTU for 1°F Change in 1 lb of Water
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Vibration Based Energy Harvesting
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Gravitational Paradox: Solving the Unsolvable
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Mercury Vapor Lamp: Why 20-30 Minute Delay?
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FFVII Cloud's Buster Sword Busted in Ludicrous Video
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How do I Calculate Normal and Applied Forces on a Branch Wheeled System?
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Can You Really Grasp the Concept of the Fourth Dimension?
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Why are we allowed to cancel units?
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Why is vector addition defined the way it is?
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Can a Blast Wave in a Pipeline Outrun HMX Detonation Velocity?
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Calculating straight-line distance between cities
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The classic 'stone at the end of a thread problem'
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What would we percieve ions as in our eyes?
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Decay time of waves in a swimming pool
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How is v1i-v2i=-(v1f-v2f) Derived?
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Puzzle of negative result of Michelson Morley experiment
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A question about fluids and tubes
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What is Stochastic Overflow? | Carl Sagan
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Simple test to determine type of radioactive decay
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B Is the Multiverse So Vast That Anything Can Happen?
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Beginning of Time: Hawking vs Greene
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Supersonic Flow Before and After the Shockwave
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Place with all components of all formulas explained?
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How inverse square law is derived from area of sphere
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B What is time? How can we see it?
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Structures: dynamic, complexity, organisation
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Quantifying the complexity of a system
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Gas or liquid to adsorb an explosion
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Proton Proton Annihilation: The Energy Behind Fusion
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Can Soda Going Flat Affect Its Mass?
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Newton's Third Law: Action Equals Opposite Reaction
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Rocket Braking System: Applying Newton's I Law in Space
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A proper explanation of the "anti-gravity wheel"?
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How quickly does a change in gravity affect its surrounding?
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Where does the energy in LED come from?
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What does divergence tell us about vector fields?
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Is it possible to get down by throwing hands upwards?
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Calculating 1/4 Earth Arc with Trig
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LC series oscillator with DC supply
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Blocking Back Of Fan Creates Vacuum In Front?
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Could Antimatter Propulsion Revolutionize Space Travel?
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Parallely Connect Batteries: What is the Equivalent Emf?
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MPA calculation VS MPA listed on materials
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How Do You Construct a Force Diagram for a Suction Cup on a Wall?
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A Phased directed energy beam emission
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What is the Net Resistance in this Complex Resistor Problem?
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Understanding Normal Modes and Standing Waves in Vibrating Systems
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Questions about density and being in the air
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I Load on a Horizontal Wire (Zip line)
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B What would happen if you went back in time and prevented you
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Why do all objects move in straight lines?
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Size of Americium in a Smoke Detector
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Using the divergence theorem to prove Gauss's law?
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Flame colors - where's the chlorine?
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Insights Plus/minus What? How to Interpret Error Bars - Comments
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Why is the Center of My Microscope Image Lacking Contrast?
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Moving an asteroid into earth orbit
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Expected rate of change, if at all, of nature's constants
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Why would changing to a larger brake master cylinder decrease braking pressure?
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I Can a Charge Repel a Neutral Object?
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Difference Between Shm & Oscillation
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Can context and culture influence how we see colors?
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Desired properties for a solar cell
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Gauss' theorem due to thin infinitely long sheet
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Vector Calculus: Understanding Divergence & Curl
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