Classical Physics Forum

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Join expert classical physics discussion on the principles developed before the rise of relativity and quantum mechanics. Including mechanics, electrodynamics, thermodynamics, optics.

Mechanics

I Is calling fictitious forces "not real" just about terminology?

Optics

I How do I stretch a laser from a beam into a sheet?

Thermodynamics

I What thermal cycle would describe the action of a candle carousel?

Electromagnetism

A Reflections at the source point of a transmission line
I Lux & Lumens -- how do they work?
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I Is it possible to "violate" momentum at the expense of more energy?
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I Outright understanding L/R inductor time constant
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I Question regarding finding the magnitude of Torque
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I Can Magnets Provide Infinite Energy for Weight Training?
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B Why does a stiff boat rudder produce forward thrust when pumped left to right?
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B Harmonic oscillator and simple pendulum time period
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B Why doesn't static friction move the other object?
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A Displaying the dimensionless Radiation Transport Equation
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B Celestial mechanics: Why is my planet orbiting faster and faster?
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I Energy of an electromagnetic wave
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I Figuring out the torque required to rotate a dome
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I Solving the Boat Crossing a River Problem using the Calculus of Variations
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B Proving the Existence of Particles: An Exploration
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A How Does External Pressure Affect Internal Pressure Variation in a Sphere?
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I Torque required to prevent precession
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I What is the Formula for Calculating the Length of a Hanging Spring?
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Insights How Can We Jump When the Ground Does No Work?
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I What is the minimum force required to lift an object?
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I Radius of Gyration: Definition & Uses
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I Laplace equation with irregular boundaries
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B How does the Paper Spiral work?
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I What Happens to Ions Generated by a Destat Apparatus?
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I What is the equation for calculating average gas flow in a compressed syringe?
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I Angular momentum and turning a bicycle
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I Understanding Sound Waves in Fluids: Pressure and Velocity Fields
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I Is there an integral version of Newton's law of gravity?
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B How to use Refrigerators/AC in efficient manner so that it remains cool inside?
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I Understanding Classical Mechanics: Acceleration
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I Bernoulli's equation and the work energy theorem
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I Does Ohm's Law work for Light Bulbs?
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I Electromagnetic effects in the brain
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I The Curious Case of The Impotent Magnets
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I Can a Core-less Dynamo Really Achieve Double Efficiency?
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I Solar system simulation errors
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I Hydrostatics: Pascal's principle and ocean depth
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B Question about collisions -- Knife point piercing a ball of clay
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I How Does Non-Stretchy Mat Material Affect Trampoline Performance?
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B Proof of the existence of atoms
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I How Does Centrifugal Force Affect Objects on a Rotating Disk?
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I Kepler's second law derivation from angular momentum conservation
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I Why do we still say “the speed of light” instead of “c”?
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I Off center torque applied to a rotating body
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B Angled Rod w Float Attached -- Force of Float
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I Understanding relative friction
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I Friction of a rolling cylinder on an incline
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I Does gravitational energy travel like electrical energy?
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I "A system tries to minimize total potential energy"
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I Does dividing maximum frequency by sound frequency give accurate velocity?
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I Summing linear momentum in circular rotation
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I Understanding the physics behind a Solenoid Valve
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I Calculating Hydrostatic Force on valve cavity in a Solenoid Valve
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B A friend of mine sent me these pictures showing multiple shadows
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I Propagation of Errors, Ohm's Law
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I Demo of spinning object flipping its axis (intermediate axis theorem)
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I What is the Order of Integration in a Double Integral?
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A Model the pressure of a zero-gravity simple fluid system
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B Swimming at the Same Reynolds Number as Sperm: A Reflection on Purcell's Talk
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Why do we assume harmonic time dependence in wave equation solutions?
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I Time of flight measurement uncertainty
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I Weak principle of equivalence (Galileo, Newton)
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I Reasoning for circular/elliptical orbits
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B Confusion when considering pV=nRT in Two Balloon experiment
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B A flip of the Earth on its axis
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I Blackbody radiation and the cosmic microwave background
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I Effective weight vs distance to the point of attachment of the weight
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B Can nuclear bomb(s) change trajectory of small black hole?
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I Which units is this conversion factor for (molar volume)? 0.023901488
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I Formula for Doppler effect in moving medium?
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I Shock Load on Rope: Weight Limit Analysis
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I Does Space Curvature Account for Gravity Between Individual Atoms?
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I Dust sticking to fan blade downstream of rivet head
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I Why does hot air have low pressure? (wind formation)
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I Gravitational potential energy
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Insights How to Model a Magnet Falling Through a Conducting Pipe
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I The different generators of canonical transformations
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I What Explains the Paradox of Mechanical Energy Conservation?
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I Gravitational potential of an ellipsoid
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I Calculating your weight in an elevator
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I Why didn't the wrecking ball smash his head?
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I Gas molecular attraction in the sense of Newton's law
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I Brownian motion and continuity
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B Why is sea surface water relatively constant?
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B Newton's third law (equal and opposite force)
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I How Does Angular Velocity Affect Instantaneous Acceleration in Rotating Systems?
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I Acceleration as a Function of Time Using Constant Power
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B Resonance state - Alternating current
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I Hamiltonian formalism and partition function
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I Using Dimensional Analysis to derive an equation (Walter Lewin video)
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I Damped oscillator with changing mass
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I What Direction Do Sparks Travel from Steel-on-Steel Friction in Railroad Wheels?
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I Designing an Invariant Lagrangian: Rules and Considerations
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I Velocity for uniform circular motion
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I Converting Units: How to Convert 1.6*10^7 N/cm^2 to kg/cm^2
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I Topics covered in John R Taylor Classical mechanics
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Insights How to Model a Magnet Falling Through a Solenoid
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I G-force centrifuge mounted on opposite rotating platform
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I Physics behind making a mango milk shake
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B Potential energy and lifting an object vertically
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B Ideal gas formula not working?
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