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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.
Why Does Relative Velocity of Approach Equal Zero at Minimum Distance?
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Can energy be taken away from an object without touching it?
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Kirchoff Rule Sign Conventions, Need Clarity.
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Why is equal sign used in physics?
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Derivation of Height Function given an angle
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Path Different Between Two Waves
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Why Are Standards Definitions So Complicated?
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When is g (9.8) negative or positive?
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Waves: Why No Interference Pattern with 2 Flashlights?
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Are Gaming Consoles Solving PDEs for Realistic Animations?
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Why fire doesn't burn back to gas tank (stove and welding)
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Is There a Macro Version of the Planck Length?
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Help understanding about wavelength
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Where Does Certainty in Radioactive Decay Come From?
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Can an Orange Break Through 1/2" Drywall?
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What does living in exponential times mean?
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How Does Sinc Convolution Prepare an Image for Nearest Neighbor Downscaling?
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Understanding Normal Modes of Objects - Linear vs Non-Linear Particles
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Bubbles Escaping from Submerged Container
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Making atoms out of their building blocks (p,n,e-)
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Stillness of Systems: Physics Laws & Double-Slit Experiment
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How Does Gauss' Law Apply to Nested Spherical Surfaces with Varying Radii?
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Action Reaction on a discus thrower.
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What Is the Difference Between Intensity and Density?
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Why Is Vector Notation Essential in Cross Product Calculations?
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Can humans really see in the infrared spectrum?
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Why canal rays need a perforated cathode?
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QM: Need Help Applying Fourier Transform
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What is the relationship between wavelength and excited shells in atoms?
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How many atoms thick is a sheet of paper?
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What is the rate of change of amplitude for standing waves with respect to x?
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Stimulated and spotaneous emission
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What is "% fs" Meaning in AFM Oscillation?
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Does nature behave according to the right hand rule?
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Random peaks, spectrophotometer & iridescence
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Would a square wave look like a sine passed through a material?
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Liouville's Theorem and Black Holes
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Reduced Planck's constant and Planck's constant?
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How Does Potential Energy Affect the Internal Energy of Real Gases?
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How Can I Measure Dosage of Ferromagnetic Powder in Kerosene?
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Do Steel Molecules Move Simultaneously or Sequentially?
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Smallest set of fundamental physical constants?
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What is the percentage of empty space in an atom?
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Are There Negative Conductivities/Resistivities?
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Understanding Spectrum: Types and Interactions with Matter
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Solving the Debate: How Fast Am I Going?
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Recommendations for a Book on the History of Physics
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Researching Negative Energy: Where to Start?
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How to apply Thevenin and Norton Model
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Does Diffracted Light Need to Be Focused or Collimated on CCD?
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Fourier Series and Absorption Questions?
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Strength of Mild Steel 1/16" Wall Tubing
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What Causes Everyday Objects to Have Different Colors?
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Rethinking Newton's Equation: Re-writing F=MA with Reduced Mass
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Is Detonation a Physical or Chemical Reaction?
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Can someone with a helmholtz calculation equation.
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Spooky action at a distance - gravitons
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What limits the strength of a field at a given point in space?
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Connecting to batteries together in a circuit
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Calculating Capacitive Reactance for 10V, 2.5kHz, Sine Wave
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Why Does the North Pole Determine the Live Wire in AC Generators?
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What is a gravitational sling-shot?
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Looking for some info on Saturn V rocket launch
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Equipartition Theorem and Number of Modes
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Can We See Atoms and Molecules Without High Powered Microscopes?
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Unraveling Gauss's Law: Explaining Its Meaning and Use
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How do we calculate gravitational force when an object is inside a shell?
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Gravitational Waves: Slowed by Media?
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Primitive methods to make simple geometrical solids
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What are the mechanics of gravity?
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Making Heavy Elements: Can Plutonium Be Made Naturally?
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Force required to break tempered glass with apple?
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A hypothetical question about seeing an atom with the naked eye
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Can Cheese Evaporate? Temperature and Chemical Compounds Explained
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What is the concept of mass conservation and its implications for human life?
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How can I convert force (N) to RPM for my plant uprooting device?
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Can something exist without us ever being able to detect it ?
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Sealing a 6 torr closed system vacuum
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'flat' field spectrograph and optcs focusing
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I have a little question, holistic yes, but possibly interesting
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Mystery where propulsion originates
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Diminished image of ultra small object
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Should the Z Coordinate Be Included in XY Plane Vector Problems?
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Visualizing Angle of 40 Degrees on Bathroom Scale
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Integral of product of infintesimal volume
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Explosions and Damage: How Does Size Affect Impact?
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Is it possible to use air as a medium to display images?
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Wanted High density Liquid For suspension of Solids
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Source of Dirac Field: Classical & Quantum Explanation
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How stability is achieved in a bicycle?
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Is the Arrow of Time Driven by Probability and Entropy?
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Explaining Gravity: A Simple Question Answered for Kids by an Expert Astronomer
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Gravitational Forces on Mass < Planck Mass: Evidence?
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To Physicists: Some questions and information?
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Is Spacetime Like a Fluid with Surface Tension?
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Why is sliding in dirt track racing faster?
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Derivative discretization with fixed boundary condition
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Calculating Error of w from Errors in x,y,z
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A few questions about wave interactions (conceptual, not technical)
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How Does the Laue Camera Calculate Reflection Angle as 180 - 2θ?
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