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 Questions on Stat Mech Physical Adsorption Problem
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A How to measure emissivity of hot (~1000 centigrade) objects
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I Helmholtz resonator with multiple necks--formula?
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A Overdamped Condition of m\ddot{x}+\dot{x}+kx=0 Equation
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A Classical uncertainty principle
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I Immersed Boundary method and No-Slip condition
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I Determining Plate direction by having three point of it.
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A What is the difference between Flow and Boundary Separation?
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I Classical waves and the Doppler shift
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B Where's the action force if the normal force is a reaction force?
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I How many degrees / radians is one full orbit of the Earth?
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I SI definition of second: what day/year is the reference year
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B What the equal sign means in physics
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I Regarding Joule's gas expansion experiment
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I Identifying Wt Symbol for Piston Assembly Inertia Formula
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A Canonical transformation - derviation problem
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I Hertzian contact theory on sin and cosine plane
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I Please identify this physics symbol
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B Question about the validity of Coefficient of Restitution
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A How can I calculate the R value for a solid in OpenFOAM CFD modeling?
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I Michelson interferometer dimensions
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A Material for Antennas: Can Slow Velocity Dipoles be Used?
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I Help getting started with a numerical solution
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I Physical examples of different types of bifurcation
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I Effect of impedance changes less than a wavelength
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B Question: Helicopter over a scale
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I Boundary conditions for displacement vector D
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I Can one get E=mc^2 using classical EM theory?
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I Radial movement in a gravitational field
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I Calculate the Resultant Force Between 4 Points
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I Is the Action Always a Minimum in the Principle of Least Action?
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I Could Different Attractors Explain Variations in Lyapunov Exponents?
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B Why Does a New Syringe Have an Open Piston?
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A Semi Classical Explanation of Stimulated Emission
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I Liouville operator time dependency
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B How does running in a moving train affect race times?
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B Grokking the 1/2 * a * t^2 product
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A Limits of the classical oscillator
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I Variation of Torriceli's theorem?
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B Effects of a discovery of the monopole
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I How can we transform a Lagrangian to obtain a new set of equations of motion?
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B A view of the double-slit experiment
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A Modeling and simulating a 2D Turbulent flow
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I When to use which dimensionless number
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I Static analysis of bicycle frame - Need some clarification
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I Fringes observed between the fingers
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I Young's double slit: why fringes gets dimmer and inconsistent?
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I Ring or the shell in Bremsstrahlung?
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I Which Vectors Can Legitimately be Broken into Components?
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I Why do objects with mass attract each other?
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I Diameter affecting string's impedance
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I Partition Function Derivation: Where Did I Go Wrong?
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I Feynman: Apparent area of a nucleus
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I When Should the Bohr Atom Behave Classically?
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A How to Calculate Young's Modulus for Deformation of a Sphere into an Ellipsoid?
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I A perfectly stiff wheel cannot roll on a stiff floor?
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I Are there classical theories of strong/weak interactions?
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Insights Fabry-Perot and Michelson Interferometry: A Fundamental Approach - Comments
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I Adsorption of a evanescent waves
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I Why the Lagrangian is the difference of energies?
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B Angular distribution to energy distribution
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B Interval scale -- very basic question
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I Mastering Cooling Soup: Feynman's Explanation of Evaporation and Heat Generation
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I Perfect gas in a box with a piston
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I How Do Attractive and Repulsive Electromagnetic Forces Combine in Contact Force?
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A Physical interpretation of virtual displacement
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Mathematical Modeling of an articulated vehicle (trailer)
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B Understand Units: Physics for High School Graduating Students
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B What is Force & Why? | Explaining Net Force
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I Sled Physics -- trouble understanding this equation
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I Window blinds - colour depends on window open/closed
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I Significance of the viscous stress tensor
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I Taylor Series Expansion of Quadratic Derivatives: Goldstein Ch. 6, Pg. 240
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B Adiabatic or Isobaric process?
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I Stefan-Boltzmann Law: IvdvcosΘdw Explained
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I Outer product of flow velocities in Navier-Stokes equation
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I Uncovering the Mystery Behind SM Lagrangian Sums
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B Arm-wrestling -- question about forces
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B Young's Double slit experiment with different slit sizes
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I Some help with deriving svedberg equilibrium equatio please
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I Fluid separation in boundary layer
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I Is my attempt to derive Gauss' law correct?
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B Tides and Local G: Investigating the Relationship Through Long-Term Observations
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A What are the oscillation modes in low-gravity capillary-dominated flow?
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I Displacement of the centre of mass of the Earth
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B Integration Bounds for E-field Calcualtion
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I Gauss's Law: Understanding the Role of E in Electric Field Calculation
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I Cavendish experiment to determine G
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B Analyzing open steady flow systems with SFEE vs. Rankine cycle analysis
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I How can I amplify and shift the phases of a complex waveform in MATLAB?
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A How to simulate a membrane in a (2D) fluid?
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A How does one "design" a PDE from a physical phenomenon?
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I Anyone recognize this equation?
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I Achromatic prism: Why subtract both angles of deflection?
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B Finding the mass of gas ejected by a rocket
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B How Much Force to Draw a 16-Pound Recurve Bow 1 Meter?
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I How Are Definite Integrals Related to the Principle of Least Action?
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A The method of finding periodic three-body orbits
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I How well can we 'see' at different wavelengths?
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I What is causing those patterns on the glass?
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