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 How does sound reflect from an interface at an angle?
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I How Do Electromagnetic Lenses Magnify the Image?
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I How do point charges in a conductor move and stop?
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I What does weight actually do in gyroscopic precession?
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I Classical Mechanics - Motion of a particle
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B Free fall floating in a closed spaceship near a gravity source
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I How Does Surface Tension Balance Small Objects on Water Surface?
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I Build Setup to Create Electric Damping Force
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I Reference Frame, Difference in Kinetic Energy, Fuel Consumed
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I Charge in RLC circuit when starting charges are 2Q and Q
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I Is the current related to a path or to potential difference?
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I Du Nouy Method for Measurement of Surface Tension
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I Can We See the Moon From 238,900 Miles Away?
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B Fluid Continuity Equation in different reference frame
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A Free boundary conditions on vibrating rectangular membranes
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I Tangential velocity of an object rotating around a rotating axis
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I Electric Potential -- Is my understanding correct?
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A Hamilton's Method with Lagrange Equation and Constraint
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I Escape of Hydrogen from the Earth's Atmosphere
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B Object falling through highly compressed air question
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I Behavior of a curved 2D sheet and a curved 1D wire under acoustic wave
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B Comparing two expenditures of work
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B Air escaping out of can with hole
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I Phase Speed of Wave in non-relativistic Doppler Shift Derivation
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I Wire Tension Formula: Shape Expression w/ 3 Pivots
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I Is My Summary of the Work-Energy Theorem Accurate?
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B Light propagation in dense media
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I How does the Lota Bowl water experiment work?
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I Power equation using heat instead of work
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I How to know whether it is +,- g and +,- y in the kinematic equations?
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I Scalar product and generalised coordinates
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B How long it takes the Earth to fall halfway to the Sun--ellipse method
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I Falling in an O'Neill Cylinder
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B Speed of light versus wavelength
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I Non-Constant Angular Acceleration
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I Is the new Ampère exactly the same as the old Ampère?
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I Static Electricity -- How best to generate it and use it?
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B Different formulas for electric flux
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A Non holonomic constraints in classical mechanics textbook
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B Resistance Between Two Small Conducting Spheres
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A Extending Hamilton's principle to systems with constraints
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I What is the real meaning of a pressure between 0 and 1 bar?
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I Virtual displacement is not consistent with constraints
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A Motion of a spring that has mass
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I Solving for ##\theta## in a Trigonometric Equation
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B Question about Gravity and my hands
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I Can Spider Silk Conduct Electricity?
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I How can we prove that the capacitance does not depend on charge?
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B The Mysterious Water Bottle: Uncovering the Physics Behind It
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B Solve My Train Dilemma: Can I Jump High Enough?
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I Phase space integral in noninteracting dipole system
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I Centrifugal Effects During Rail Launch
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I More rigorous Euler-Lagrange derivation
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I The pressure exerted by radiation
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B Intermediate Axis Theorem - Intuitive Explanation
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B Physical temperature and antenna temperature
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B Measuring change in g with height (TV program many years ago)
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A Why Does Hamilton's Principle Use L=KE-PE Instead of L=KE+PE?
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I Is energy always conserved in a co-rotating frame?
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B Coupling Magnetic Fields: Does Orientation Change Strength?
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B When do marbles behave like a liquid in a beaker?
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B Voltage between the positive terminal of a battery and a point in the air
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B Balloon rocket- What happens inside and why the reaction?
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I Is there a negative sign in front of the centrifugal potential energy?
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I If I clap once to a wall, and then walk forward, will I hear an echo?
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I Minimize supported weight of a water pipe
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I Magnetic dipole in vacuum near absolute zero
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B Deriving formula for force by thought experiment
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B Discover the Reason Why Light Moves Slower in Water | Fermilab Video Explanation
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I Energetic argument for the tension in a current loop
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B Question about stress - strain graph and definition of hardness
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I Question about n rotating parallel cylinders
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I Are Peak Moment and Peak Torque Equivalents in Biodex Dynamometry Measurements?
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I Water Waves Over Obstacles: Higher Frequencies Grow, Not Decay
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I Confusion over applying the 1st uniqueness theorem to charged regions
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I What's the proof that R2 /(R+h) = (1 – 2h/R)
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I How are the Maxwell's Electromagnetism equations traceless?
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I Confusion over the "centrifugal potential energy"
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Trying to calculate barge capacity and displacement
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I Maximum acceleration of an alpha particle?
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B Newton's Rings central spot brightness
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I How fast does an aircraft need to fly before it starts to glow?
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I What Keeps Water in a Straw When It's Removed from a Glass?
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I Classical/empirical potential for electron-ion interactions
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B Why Is Initial Velocity Not Always Zero?
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I Optical proprieties of sulfur dioxide in the gaseous state
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B When a bullet is fired from the back of train
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I Rocket Fuel Ejection: Intuitive & Math Explained
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I References for Hamiltonian field theory and Dirac Brackets
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I Fluid Viscosity & Viscous Friction Between Plates
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I Two-body problem in orbiting frame
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I Why Is Momentum Preferred Over Velocity in Particle Physics?
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I Exact Integration of Newton's Gravitational Law?
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I An Alternative explanation for energy loss due to Eddy currents
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B Potential energy in standing wave compared to traveling wave
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B Do contracting muscles emit electric fields?
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I Pipe Air Blowing - Exit Velocity of Air
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B Why do moving charged particles feel a force in a magnetic field?
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B Why was the Sun's output not as intense in the past?
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B Torque applied by a continuous mass instead of point particle
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