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

High School Mousetrap Car Energy efficiency

Optics

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

Thermodynamics

High School Using battery energy to heat a battery…

Electromagnetism

Undergrad What determines if wave components are independent vs coherent?
High School Would there be any varying forces acting on individual wells in rotation? (stir/shaker plate)
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Undergrad Is there action at a distance at the atomic level in physics?
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Undergrad Two kinds of pressure
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Undergrad Creating White LEDs: Phosphor vs RGB
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High School Doubt regarding relative acceleration
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Undergrad Solving a momentum problem where masses change after the collision
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High School Not sure about the magnetic flux (phi) depending on a cosine function
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High School Is water pressure on an inclined wall less than the weight of the water?
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Graduate Flaw in Lagrangian Mechanics for a rotary inverted pendulum system? (Simulation vs. Measured)
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High School Electric Field Direction: Are We Assuming a Universal Positive Frame?
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High School Constant jerk motion: acceleration vs. position
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Undergrad Magnetic field inside a capacitor
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Undergrad Gravitational Force Calculation w/ Superposition Principle
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High School Why did Rutherford conclude the atom was mostly empty space?
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Graduate RLC oscillator vs class A or B amplifier for EM induction
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Undergrad Will water of uniform temperature with perfect insulation stratify?
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Undergrad Determine angle of initial momentum in zero reference frame
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Graduate Calculate velocity of streams impinging at differing angles
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High School Formal definition of work done
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High School Torque Calculation - Not a basic application
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High School What Is Mass and How Is It Defined in Physics?
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High School Why does hot water rise to the top of a water heater?
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High School Will there be water coming out of the last hole?
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High School Measuring Shock Absorbency / Kinetic Energy
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Undergrad Magnetic Component Permeability vs Frequency Loss
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Undergrad Focusing sound waves from the environment
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Undergrad How deep does it need to go for a physics theory to be consistent?
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High School Conservation of energy demo -- An upgrade to the standard version
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High School Why do things burn up in the atmosphere but not in the ocean?
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Undergrad A Mathematica code to plot two functions on the same screen
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Graduate Historical clarification of the Planck formula of blackbody radiation
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Undergrad What will be the boiling point of fully-filled water in a vacuum container?
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Undergrad Rolling Without Slipping
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Undergrad Assumptions for Navier Stokes equations in this system
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High School How to understand formula for bending of a rectangular rod?
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Undergrad Need help for ultrasonitc atomizer (transducer)
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Undergrad Formula for maximum angular frequency and velocity
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High School How does an object gain potential energy?
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High School Energy Efficient Boiling of Eggs
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Undergrad Relationship between the divergence of a field and its cause?
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Undergrad Justification of Superposition of Waves with Different Speeds
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Undergrad Why does mechanical energy of a damped oscillator not vary with spring constant?
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Undergrad Infinite value of amplìtude of an undamped driven oscillator at resonance
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Undergrad Standing Waves by Reflection: Losses of the Reflected Wave
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Undergrad Pulse bouncing off ends of a tube, expressed as sum of sine modes?
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Graduate Treating Velocity as Independent of position till the end in Lagrangian Mechanics
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High School Power from global loop power cable ?
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Undergrad Is Fluorescence Possible in Twilight?
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Undergrad On Mixing Colors of Light
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Undergrad Relationship between Concentration of a Force and Energy Density
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Undergrad Bouncing sound pulse in cylinder, driving vibrations in shell
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Undergrad Canonical transformation from canonical to kinetic momentum
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Undergrad Help me to understand how integrating this function works
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Undergrad Lagrangian for pendulum
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Undergrad Do vocal tract resonances assist a singer's pitch control?
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Undergrad Mathematical proof for the Lagrangian function
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High School Vertical Compression Strength of Different Hollow Rods
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Undergrad Resonance peak for a driven RLC circuit - Physics 10th Edition
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Undergrad Derivation of the Helmholtz equation
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Undergrad Can you use these equations to calculate explosion overpressure?
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Undergrad Why can't n be negative in Laplace's equation?
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Undergrad Help me understand heating/cooling principles
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Undergrad Which radiation between infrared and microwave is more penetrating?
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High School Time to fall from 200 miles
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High School Creating drag to reduce falling speed
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Undergrad Help Needed with Tracker Physics Program Measuring Acceleration
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Undergrad Gauss' Law - Does it apply even when there are external fields?
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High School Difference between holographic paper and diffraction gratings?
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Undergrad DDWFTTW: Looking for the least confusing explanation
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High School Acceleration as a function of position
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High School Can we measure absolute motion of Earth and Sun?
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Undergrad Frequency components that remain fixed when singing a scale
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Undergrad How much energy is needed to blow up stone (and other materials)?
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Undergrad Calculating vapor pressure from Boltzmann distribution?
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High School Rotating Capacitor: Concentrating energy using accessible technology
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High School Is all EM radiation light?
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High School Balancing on Pulley system
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Undergrad Find period of circular-orbiting source based on max observed freq
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Undergrad Statistical physics in 2D world: How to simulate gas and its interaction with objects? (game design)
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Undergrad About the meaning "on-shell" vs "off-shell" in Hamiltonian mechanics
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Undergrad Need a good idea : 3D simulation of Inductive wireless power transfer
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Undergrad Calculation of electromagnets with a hollow core
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Graduate Classical interpretation of the Thomson experiment compared to the modern quantum perspective
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High School Hold a hammer at the top vs bottom of the handle
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High School Strain on a foil sheet separating two compartments in a cylinder
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Undergrad Variation of air temperature with altitude
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High School What is the speed of "motion"?
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Undergrad How did they reach this conclusion regarding the coefficients?
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Undergrad Water column object insertion and energy recapture
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Undergrad Trying to create MHD drive for a boat
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Undergrad Same old question, I still don't get it: E=1/2mv^2 - more E with V?
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Graduate Hamiltonian formulation of classical mechanics as symplectic manifold
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Undergrad Gibbs Free Energy Correction Term
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Undergrad Singing Crystal Wineglass -- Does the wine mass determine the pitch?
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Undergrad Cartesian velocity and generalized velocity
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Undergrad Principle of minimum action and application to real problems
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TE and TM polarization parallel definition
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What type of functions are these?
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Undergrad An actual meaning of instantaneous velocity
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Undergrad Magnetic field when the area of the plates of a capacitor increases
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