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 Liquid soap pulsing as it's drawn into a syringe
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I What are the applications of dimensional analysis and why does it work?
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I Tippe Top Animation: Real-Time Motion Simulation
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B Is information the 5th state of matter?
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I Stability of circular orbits in an arbitrary central force field
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B Can Time Truly Flow Backwards in Quantum Physics and Cosmology?
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I Is energy a fundamental physical quantity or a derived one?
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B Tidal Locking question about the Earth-Moon system
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B Understanding the Galilean transformation
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B When is the parallel axis theorem not appliable?
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I Can You Explain the Mystery of 9.8m/s^2 Acceleration on Earth?
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I Cooling Time for Air Conditioning
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I Vibrations of waves with pinned vs free boundary conditions
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B Significance of the solution of the Euler-Lagrange equation
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I Rosetta orbits and phase space
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A How to get the second line of this equation from the first one?
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I Problem about uniform thin disk
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A Why do we extremize the Lagrangian in the Hamilton principle instead of energy?
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B Non-linear Behavior, Chaos to Order
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I Why don't we consider Earth's forces/movement in problems?
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I Normal Stress Vectors: Sketch 1 vs Sketch 2
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I Why is the emissivity of metals low?
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A What is the difference between aggregation, nucleation and growth?
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I Parallel Plate Fields: Questions & Answers
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I Does a 2-dimensional world really exist?
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I Is Capacitor Voltage Curved Like a Hyperbola?
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I How do I determine I for a truncated cone in the bending of a Stylus Shaft?
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B A thought experiment about the Sun vanishing
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I The relationship between reversible and irreversible processes
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I Lagrangian and the Euler Lagrange equation
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Understanding Stress in Pipe Walls: Impact of Internal Air Pressure
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B Why do we need a separate center of gravity idea when we have CoM?
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I T-S Diagram for an Irreversible Process
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B What is the energy required to approach near absolute zero?
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I Are Coin Flips Truly Random Like Quantum Systems?
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I Stationary waves in a vertical rope
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B Dropsheet-duct tape wall in The Martian
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B Hypothetical Gravity Question #2
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B Gravity Inside a Hollow Sphere
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I Variational operator in the least action principle
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I Understanding the Discrepancy: Why Does the Moon Have Less Gravity Than Earth?
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B Control volumes and Reynolds transport theorem
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B Gun Recoil: Will Wall Impact Momentum & Velocity?
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I Stresses Caused By Deformation For Bending
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I Downhill Bicycle Braking Question
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I Child's experiment to weigh air
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I When does the ideal gas equation break down?
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I Is the energy of this system conserved?
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I Are there waves that go up and down without going below zero displacement?
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B Action-Reaction forces and angles
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B Question about Action-Reaction Forces
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B What is the significance of Δx and Δp in the ideal gas entropy equation?
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A Equipartition theorem and Coupled harmonic oscillator system
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A Maximum reception/transmission criteria for Conical Horn Antennas
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B Can We Measure Diffraction Intensity Using Huygens' Principle?
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I Confused about Mercury Barometers
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I Deciphering Decay Chains: Understanding the Complexity of Radioactive Decay
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I Small oscillations and spatial transformations | Part 1
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A The Lagrange–d'Alembert principle for rigid bodies
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I Distinguishing gravity from fictitious forces
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B Why does Greiner call them theorems?
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I New insights in penguin physics
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B Understanding the Friis Transmission Equation
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I Normal modes of vibration from the total energy
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Physics and mathematical hyperoperations above exponentiation
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I A real life problem with plumbing at my house
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A The unwinding coil (teaching experience sharing)
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I My 50 year old Science book says that Black is the absence of all color
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B Can Vibranium Realistically Be Used in Hyperloop Construction?
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B Measurement and Uncertainities
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B Understanding F=ma: Constant Speed & Acceleration
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B Mark Watney missed Ares III and died
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I How could Euler have gone about creating his buckling formula?
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I Young's double slit experiment -- Question about this wavefront diagram
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I The total energy stored in a battery (theory/formula)
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I Why volume is conserved but not the surface area?
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B Exponential formula for Excel sheet
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I Non-adiabatic expansion in Diesel and Otto cycles
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B How to calculate the amplification of a cone
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B Helix in intrinsic coordinates?
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I Size Effect on Structural Strength
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I The Non Constant Gravitational Constant (G)?
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A Through the eyes of a being that can see two in dimensions
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I Blowing Bubbles in Space: Can You Create a Giant Bubble in the Vacuum of Space?
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B Testing the effect of Gravity at home....
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A Why people say we can't "feel" UV?
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A Where Can I Submit a 15-Page Article on Educational Largangian Mechanics?
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B A questionable statement in some FBD notes?
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A The tautological 1-form: Lagrange vs. Hamilton formalism
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I Frcf= reactive centrifugal force...Frcf= -mv2/R
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I How Did 1900s Physicists Misjudge the Completeness of Physics?
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I How does the Hall effect interact with the iLB force in a copper wire?
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A Is physical reality more than the sum of its parts?
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B Animation of a standing wave formed by components from a free end
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B How the role of Mass is justified for below cases? (Earth/Moon, Jupiter/Io)
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I Solve the Mystery of the Alarm Signal: Duncan's Story
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I Solve Mystery Equation - Get Insight into Relevance & Contents of Brackets
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B Could Asteroid Strikes Affect Mercury's Perihelion Advance?
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B Does Buoyancy Apply When Not Fully Submerged?
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I Thickness of dark wet spots on drying dishes
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