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 Deriving the relativistic rocket equation with exhaust efficiency
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I Fluid dynamics of sailing boat when steering
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I The far reaching ramifications of the work-energy theorem
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I How Does a Polygon Topple Without Sliding or External Force?
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I Lagrangian density of a linearly elastic string under gravity
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B Slack vs tight rope at the start of a pendulum
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B Why Do Poached Eggs Stay In The Center?
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A Continuity of a quantity in a conical system to determine the velocity
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I Energy Released From Dropping Things Onto Neutron Stars
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I Where to Find In-Depth Resources on the Physics of CDs/DVDs?
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I Pushing a rod in a magnetic field
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B Can charges move without a field? How charges redistribute without it?
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A Stress tensor and pressure relationship
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B Is the Longer Path Quicker in Physics?
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I How Does Friction Function in the Movement and Turning of a Car?
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I Static sphere with gravitating fluid
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I Sound power, amplitude, frequency, and decibels
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I Is Gravitational Red-Blue Shift Dismissed in Cosmic Observations?
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I Expanding around 0 for multipole expansion
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I Current's Effect on Electrical Arcs
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I What does "transforms covariantly" mean here?
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I Work done by a non constant force over a non constant angle
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I Deriving the Curl of the Magnetic Field, Role of the Nabla Operator
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I Hydrostatic pressure inside an inverted tube
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I For fun: How fast would an open-front CRT kill an average human? [A?]
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I The direction of three forces acting on a line has to be concurrent?
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Can a mathematician solve high school physics tasks without physics knowledge?
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B Explanation for bright fringes in Single Slit Diffraction
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I Dispersion Relation in Different Media
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I How does the velocity of electrons depend on the voltage across a conductor?
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I What radioactive metal glows white hot all the time?
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B Log relationship between thickness of material and sound absorbed?
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B Help with science experiment magnets/force/acceleration/speed
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I Physical reality of nontrivial loops in SO(3)
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I Why singing a note while playing a note creates a difference frequency
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I Why Does a Glass Move Outward When Opening the Fridge Door?
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I Gauss' law, method of images, and force induced on conductor plates
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B Conversion of Potential Energy: Sound or Heat?
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I Seemingly a contradiction of conservation of energy?
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I Rubber Trapezoid and Righting Moment
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I A question on momentum conservation of bodies in combined motion
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I How does BTU convert to heat in degrees in a greenhouse?
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I Work done along a path: how does velocity play into it?
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I Why Does the Negative Sign Appear in the Vector Potential Equation?
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B Speed of sound in steel at different temperatures?
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B A Magnetic Misconception on Divergence 0/Closed Field Lines?
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I Swimming in space, it is a possible propulsion?
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A What is the heat capacity of water in meta-stable equilibrium?
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I Pressure delta 1.0 bar: 0.0 to 1.0 vs 1.0 to 2.0
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B Ignoring the motion of the Earth for energy vs. momentum conservation
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B Shock wave data from nuclear tests
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I Unbalanced wheel acting as a pendulum
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I Help with force analysis in the precession of a bicycle wheel
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B How does a compass know that it is in a magnetic field?
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Why does a plasma ball emit light?
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I Why Substitute Force Magnitude in Spring Work Calculation?
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I Shielded magnetic loop probe / antennas
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I Understanding Ultrasound Attenuation and Reflection in Aluminum Sheets
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B Lever balancing physics (video game design)
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B Understanding the Relationship Between Coulomb and Ampere in Physics
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I Force applied on sphere by turbulent flow
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I In ##\nabla\cdot\vec{E}## why can ##\nabla## pass through the integral?
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I Geometry of Cherenkov radiation
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B How Much Energy is Stored in Earth's Magnetic Field?
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B What is the difference between standing wave and resonance?
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I What happens if you connect the ocean floor and the surface with a pipe?
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I Will putting a wood shelf on a TV stand distribute the TV's weight?
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How Can I Create a Flavored Coating for Ice Spheres in Cocktails?
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I Why don't we talk about the E & H fields instead of E & B fields?
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I Principle of relativity and Galileo's group
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I Contradiction in formula for motional EMF
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I Is nonlinear acoustics in mainstream physics?
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I Question about magnetohydrodynamics (MHD) for electricity production
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I How did Hamilton derive the characteristic function V in his essay?
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I How to improve the accuracy of Young's double slit experiment?
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A Proper Multi-Axis Rotational Analysis Method
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I Uncertainties accumulate when measuring longer lengths?
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B Question about double-slit experiment
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B Does an apple have its own gravity?
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B The application of Newton's laws to fluid equilibrium
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B Conservation of Angular Momentum - Problem understanding this scenario
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I Advice regarding sled experiment
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I Where did I make a mistake in simplifications of equations of EM field?
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I Reported uncertainties for time and distance in physics experiment
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B How to statistically calculate the final value?
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I New frequency generation in AM signal
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B What is the pressure acting on the air?
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I Why do bullets precess in the opposite way from gyroscope diagrams?
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I Taylor expansion about lagrangian in noether
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I Are Real Numbers Essential in Scientific Measurements and Models?
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I Rocket thrust equation -- What is velocity V in mass flow rate formula?
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I G force and extreme aviation maneuvers
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B Magnetic attraction force Question
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I How does our brain differentiate between a source of light and a painted circle?
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B Consequences of a 1 Tesla magnetic field coming into the proximity of Earth?
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Understanding Stress and Strain: The Relationship Between Two Variables
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I Do objects of different mass but same size/shape accelerate the same?
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B Problem with understanding deriving Torricelli's law
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I How Feynman proves momentum is conserved in this example?
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I How does a free surface flow cause non-linearity?
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