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 Pentaprism with magnification, which surface is curved?

Thermodynamics

I Entropy and configurations of microstates

Electromagnetism

A Free surface problem in electrohydrodynamics
I Gauss' law seems to imply instantaneous electric field propagation
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I Recovering Hamilton's Equations from Poisson brackets
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76
I Do electron density waves accompany EM waves in coaxial cables?
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72
I To predict the nature of Normal Reaction in any mechanics set-up
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I What areas of maths and physics do I need to understand explosion physics?
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45
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I Off resonance driving of a MW/RF cavity
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145
I Relationship between nuclear magnetic physics and Maxwell's demon
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207
I Feynman's derivation of average square distance variation in Brownian motion
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263
I Deriving the conformal Laplacian
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208
I Topic about physics axioms, theory, laws etc..
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I Is ##p^k = \partial L / \partial \dot{x}^k## true for all ##L##'s?
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353
I Shielding behavior of a steel cuboid in a DC magnetic field
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1
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362
I Reframing Light Bending Using Density Instead of Radius
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20
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625
I Intuitive look at bending of light by gravity
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25
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971
I A "continous" gravitational field formula r=0 to infinity
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16
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665
I Board Breaks: Small or Large Deflections?
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23
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808
I Visualising rotation in 3-D space
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9
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622
I Describe the Physics involved in swinging a rope to catch a cow
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6
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462
I Color and appearance of a "pile" of biological viruses
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10
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I Boundary conditions for a wooden board used for breaking in martial arts
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20
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600
I Explaining the magnetic (cable) paradox
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5
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630
I Problem with light-ray construction
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4
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609
I What does the Lattice Boltzmann Equation actually say?
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8
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715
I Does kinetic friction propel a person walking forward?
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I Is Mechanical Energy Conservation Free of Ambiguity - follow up
2
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I Interception problem with curve (computer simulation)
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9
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750
I Air flow between sphere/cylinder and membrane
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1
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600
I A thought about visualizing space-time
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24
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962
I Permeability of Metglas and Propagation Velocity
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5
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787
I Explain Bernoulli at the molecular level?
6
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I Bose-Einstein statistics for μ>ε
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831
I Problems with Blum's Karate Article
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857
I Are 1D Longitudinal Waves Reflected at an Open End?
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I Weird Depictions of Birefringence with Angle of Incidence 0°
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2
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923
I Questions about Jean-Rayleigh's derivation of Ultraviolet Catastrophe
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1
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I Is there action at a distance at the atomic level in physics?
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1K
I Two kinds of pressure
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24
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I Creating White LEDs: Phosphor vs RGB
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5
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1K
I Solving a momentum problem where masses change after the collision
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35
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3K
I Magnetic field inside a capacitor
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16
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1K
I Gravitational Force Calculation w/ Superposition Principle
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14
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I Will water of uniform temperature with perfect insulation stratify?
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12
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1K
I Determine angle of initial momentum in zero reference frame
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3
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I Magnetic Component Permeability vs Frequency Loss
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21
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2K
I Focusing sound waves from the environment
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6
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1K
I How deep does it need to go for a physics theory to be consistent?
2
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50
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3K
I A Mathematica code to plot two functions on the same screen
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5
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1K
I What will be the boiling point of fully-filled water in a vacuum container?
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6
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1K
I Rolling Without Slipping
2
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4K
I Axial angular momentum calculation
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12
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1K
I Assumptions for Navier Stokes equations in this system
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3
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1K
I Need help for ultrasonitc atomizer (transducer)
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2
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1K
I Formula for maximum angular frequency and velocity
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3
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1K
I Relationship between the divergence of a field and its cause?
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3
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1K
I Justification of Superposition of Waves with Different Speeds
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19
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I Why does mechanical energy of a damped oscillator not vary with spring constant?
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7
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1K
I Infinite value of amplìtude of an undamped driven oscillator at resonance
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18
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3K
I Standing Waves by Reflection: Losses of the Reflected Wave
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16
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2K
I Pulse bouncing off ends of a tube, expressed as sum of sine modes?
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15
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1K
I Is Fluorescence Possible in Twilight?
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25
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I On Mixing Colors of Light
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207
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I Relationship between Concentration of a Force and Energy Density
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11
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1K
I Bouncing sound pulse in cylinder, driving vibrations in shell
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1K
I Canonical transformation from canonical to kinetic momentum
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7
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I Help me to understand how integrating this function works
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13
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1K
I Lagrangian for pendulum
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11
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2K
I Do vocal tract resonances assist a singer's pitch control?
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12
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2K
I Mathematical proof for the Lagrangian function
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4
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I Resonance peak for a driven RLC circuit - Physics 10th Edition
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2
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I Derivation of the Helmholtz equation
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4
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I Can you use these equations to calculate explosion overpressure?
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4
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I Why can't n be negative in Laplace's equation?
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5
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I Help me understand heating/cooling principles
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1
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I Which radiation between infrared and microwave is more penetrating?
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11
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I Help Needed with Tracker Physics Program Measuring Acceleration
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10
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I Gauss' Law - Does it apply even when there are external fields?
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9
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I DDWFTTW: Looking for the least confusing explanation
3
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124
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I Frequency components that remain fixed when singing a scale
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18
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I How much energy is needed to blow up stone (and other materials)?
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28
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I Calculating vapor pressure from Boltzmann distribution?
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I Find period of circular-orbiting source based on max observed freq
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1
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I Statistical physics in 2D world: How to simulate gas and its interaction with objects? (game design)
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6
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I About the meaning "on-shell" vs "off-shell" in Hamiltonian mechanics
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4
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I Need a good idea : 3D simulation of Inductive wireless power transfer
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6
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I Calculation of electromagnets with a hollow core
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13
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I Variation of air temperature with altitude
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28
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I How did they reach this conclusion regarding the coefficients?
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I Water column object insertion and energy recapture
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15
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I Trying to create MHD drive for a boat
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6
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I Same old question, I still don't get it: E=1/2mv^2 - more E with V?
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41
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I Gibbs Free Energy Correction Term
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5
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I Singing Crystal Wineglass -- Does the wine mass determine the pitch?
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22
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I Cartesian velocity and generalized velocity
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2
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I Principle of minimum action and application to real problems
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I An actual meaning of instantaneous velocity
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13
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I Magnetic field when the area of the plates of a capacitor increases
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7
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I Question about Capacitor current and electromagnetic induction
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I Question on derivation of a property of Poisson brackets
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I How to find the change in volume of a solid to a liquid
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3
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I Why is the Cross Product Used in Mathematics? Understanding its Role and History
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21
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Classical Physics

Welcome to the Classical Physics forum!

Classical physics refers to the traditional theories and principles of physics developed before the advent of quantum mechanics and relativity in the early 20th century. It includes classical mechanics, electromagnetism, and thermodynamics.

Classical mechanics, formulated by Newton, describes the motion of objects and the forces acting upon them. Maxwell's equations encompass classical electromagnetism, elucidating the behavior of electric and magnetic fields. Thermodynamics, developed by Carnot and others, focuses on the principles governing heat, work, and energy transfer in macroscopic systems.

While highly successful in explaining everyday phenomena, classical physics encountered limitations at extreme scales, leading to the development of quantum mechanics and relativity to describe the behavior of particles at the atomic and cosmic levels, respectively.

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