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
B How Do Points M and O' Move Relative to Point O in Space and Time?
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I Understanding the physics of chimneys....
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I Another interpretation of Lorentz transformations
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I Absolute and relative motion/rest
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B Is Relativity the Evolution of Classical Physics?
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B Manometer: Calculating Height of Water
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B How do I express the force of me falling 33 feet onto concrete?
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B Okay, so is Mach's principle true, or not?
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I Maximum hole diameter to prevent water leakage
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I Does a field affect the originating entity?
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B Lifting an object with a mass difference of just 1kg
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B LED light and guitar string (strobe light effect)
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I How does inertia, a property of mass, arise?
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I How do forces change with speed?
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I How is static friction the centripetal force during a car turning?
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B Need a bet settled about classical momentum
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I What's the electric potential of the Earth?
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I Would this violate or challenge Newton's laws?
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I Gap between introductory physics & solid state physics?
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I Van der Waals attractive force: Why don't the imbalances average out?
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I Free electrons in an accelerated metal?
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I How is Potential Difference Created in Electrolytes?
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Challenge Experimental Physics Challenge, June 2021
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I Calculate Diameter of Quad Coil Array for Speed of Light Rotation
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A Noether's theorem for finite Hamiltonian systems
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I Trying to rotate a disc about two perpendicular axes
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I Shooting an electron past a positive nucleus (trajectory)
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B Dynamic pressure in pressure units
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A Can high air velocity in vacuum system create "freezing" of the pipe?
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I Why is the definition of work = force times displacement?
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I What would it take to eliminate leap years?
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A Thermal shock wave question from my hydrodynamics simulation
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I Are Cathode Rays Curved by Anode Fields?
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B Calculating Force of Ball-Spring Collision
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I What Type of Workbench is Needed for a Press Machine?
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I Can a hose spray higher than the water tower?
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I A problem when trying to compare electromagnetism with gravity
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B Distribution of energy in the electric field surrounding an electron
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Why is the sinusoidal considered the fundamental frequency?
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B Can you use hand tools on the moon?
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A The equations of variable mass systems
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I Questions about center of gravity
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I A scientific analysis of stopping the spin of Discovery One spaceship
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I Catching Space Debris: Chameleon-Inspired Capture System
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B Bullet lead with given parameters
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I The dramatic difference between wet and dry sphere splashes
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A Proof of Classical Fluctuation-Dissipation Theorem
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A Which equation describes surface waves in a fluid on the same scale?
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I Amount of Noise extinction in Acrylic glass per thickness in mm
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A The gravitational constant measured by the smallest object
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A Calculate the distribution of energies from momenta
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B RC Low Pass Circuit Sine Wave Response
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I If Jupiter had a 5th large moon until "recently", would we know?
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I Undamped driven oscillation — Is there a phase delay?
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I Does combusted gas travel faster in a vacuum tube?
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I Planetary orbits - the 2-body problem
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B NIST database and compressibility factor Z
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I Is physics of living matter an undiscovered territory?
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I How to ensure an equation is dimensionless when it includes "Debye"
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Challenge Physics Challenge: Spherical Ball Rolling on a Rough Sphere | Just for Fun!
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I What happens when gas is combusted while moving?
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I Unveiling the Proof of Induced EMF Formula: E = ∫ (v x B) · dl
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I How does a standing wave form?
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I Graduation of air flow inside a vacuum chamber
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I Why is an iron cover needed for a solenoid?
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A Stress Tensor: Definition, Ideas & Discussion
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I Mass, Distance & Early Universe: Is It Mere Coincidence?
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I Frost on roof window melts in lines
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B Are silicon iron sheets really necessary for a commercial transformer?
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B Converting Lux to W/m^2 for Solar Radiation Measurement
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I Good resources for learning a little about the wave vector
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I Multiplying Uncertainties in Different Units
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I Time Reversal Breaking in Classical Systems
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A Levitron and Earnshaw’s theorem.
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B Myth: When you toss something, air aside, it follows a parabolic path
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I What are the downward forces on a neutrally buoyant body in water?
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I Fictitious forces and their associated energies
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I Questions about the definition of a metre (A. P. French's book)
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I What Happens When a Rigid Body with a Fixed Point Moves Along a Closed Path?
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I Evolution of a Boltzman distribution
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I Which Textbook References Hamiltonian Systems with Equal Orbit Periods?
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I Longitudinal waves on a string
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I Open Channel Flow: Dynamics & Forces in Irrigation Channels
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I Checking for negative feedback in a circuit
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I Calculations to prove the non-Euclidean nature of 3-D space
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B Doppler effect in moving medium?
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I What is the significance of the dispersion relation?
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I Axes of the 2-d coordinate system used in vector resolution
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I How can a process be isentropic but not reversible or adiobatic?
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B Understanding Vacuum: 15HgV, 25HgV & High Viscosity Fluid
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I Can an enclosure surrounding a Tx antenna act as a receiving antenna?
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B Term for an end state of expansion?
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B If the universe is infinite or repeats, can "I" exist again?
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B How does the doping concentration affect the depletion width?
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I What if the Earth (and the Universe) were 2d?
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B Traveling wave solution notation
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I Can the energy in two waves cancel out? If so, why?
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I Why can a person cycle more in a day than they can walk or run?
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I Necessary conditions for energy harvesting
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I Relation between spectral intensity and spectral energy density
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