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
B Work Done By Conservative Forces
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I Fluorescent lamps And Fan remote
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B Is an ellipsoid the best shape for a BBQ?
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I Can Couette Flow with Wavy Plates?
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B Calculating Heat from Drag force on a Rocket Airframe
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I Different results for the Range of a projectile
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I Electret with circular electric field
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I A problem regarding power output in cycling
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I Is this analogy between Magnetic Force and Gravitational Force accurate in helping to understand what contributes more to a stronger magnetic force?
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B Curious about Work and Energy Consumption
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B Determine forces acting on double inclined plane
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I Can I Apply Voltage to Non-Conducting Plates?
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I Does Pipe Angle Affect Hydrostatic Pressure?
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I What year were Navier-Stokes equations introduced?
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I Producing enough force with a Solenoid
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B Curious about the work - energy theorem
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B Why Did My Tennis Serve Bounce Unusually Low?
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I Is shear stress at the pipe wall the same for turbulent and laminar flows?
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B How to determine applied force when two objects collide? (basic physics engine)
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B Is the Sun's Magnetic Field About to Flip?
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B Can Lasers Really Create a Functional Light Saber?
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I Shouldn't the pressure difference along a pipe be a negative number?
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I Claude Naiver work on Navier-Stokes equations
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I Is current truly a scalar quantity or a tensor?
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I How does friction in a pipe occur, with the "no slip condition" ?
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I How to quantify gyroscopic precession torque?
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B How will a spring stretch in the following cases?
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I Rotational stability and Fosbury Flop questions
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I A Question About the Physical Explanation Behind Torque
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B Extending the Lagrangian of a double pendulum to more complex systems
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B What happens when electrons flow in two opposite directions in an electrical circuit?
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B The total voltage drop in a series RLC circuit
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B Would the following test be proof of a successful propulsion system?
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B A question about induced current in LC circuits
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I What is Surface Plasmon Resonance?
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I What are the properties of a Sound Pressure Wave going down into a Cone?
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I Excel projectile trajectory
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B Why does a magnet attract metal objects?
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I Using a tuning fork vs computer tuner for violin
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B Multiple frequency EMFs and capacitors
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B How's it possible to push on systems with 2 parts? (Newton's third law)
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I Finding Escape Velocity of mass (m) with electrostatic and gravitational influences
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I RF Power Transfer: Halbach vs. Dipole
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B Normal force in case of inclined plane and banked turn
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I Why does my ball launcher spin the ball and not launch it (air)?
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I Derivation of Fluid Pressure In A Gravitational Field
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I Directional magnetic field
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I Only one type of elementary electric charge?
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B Why does a coin take 2 full rotations around another coin?
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B Initiation and the math behind Arc Discharges
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I Plane wave decomposition of the fields of a dipole antenna
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B Speed is distance multiplied by time -- Is this correct?
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B Why do capacitors not discharge everything immediately in LC circuits?
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B A car collides with a bus, who experiences a greater change in momentum?
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I Origin of Centripetal force when the net force toward the center is 0?
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B Why is my experimental spring constant an order of magnitude off?
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A New magnetic field imaging technology with 100 nm resolution
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B Generating Energy from Molecular Motion
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I Question Regarding Force Being Equal, Even Moving Upwards (if V=0)?
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B The relationship between mc^2 and mc^2 x 1/2
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I Archimedes' principle and the column of water
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B Found a circuit where current is zero across an ohmic device (dV>0)
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I What is the actual definition of the position of an object?
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B Energy required to bring 1 kg 1000 meter above the surface of the Earth
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B Action-reaction of a sailing boat and wind
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B Sign conventions in torque and non-uniform circular motion
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I Questions about a Laser Interferometer pattern
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I What is the zero point for Potential Energy and how to find it from integral limits?
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B Sound Intensity doubles if number of noise sources double?
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I Could vibration carry electricity or something else?
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I What's the physical meaning of Curl of Curl of a Vector Field?
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A Rotation speed for a particular system under gravity
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A Retarded time and advanced time (and binning)
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B Conceptually understanding change in potential energy with 0 net work
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I Electric Potential in circuit
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I How Do Time-Varying Currents in Conductors Generate EM Fields and Waves?
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I Newton's 2nd law for an object in free fall
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B What forces act on a bar when you do pull-ups?
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B What Causes the Void Formation in Discarded Yogurt During Disposal?
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I Sun shade on Earth ground, is it a straight line or a curved line?
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A Question about Kelvin’s circulation theorem
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B Sine wave noise at different frequencies
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B Inertial Mass vs Gravitational Mass
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B How does gravitational field exert gravitational force on a body?
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B Understanding the electric field
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I Why Does Differential Pressure Vary As The Square Of The Flow?
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B Airflow around a vertical cylinder (such as a cigar)
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Equations of motion of an electron emitted from a surface
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I Frame Transformation in rigid bodies
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I Infinite flow with capillary tubes?
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I Feynman lectures on physics: random walk
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I Is there a way to calculate how rocket exhaust gas spreads out in empty space after leaving the rocket?
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I Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
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B Why does light diffraction create circular patterns?
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I Green's function boundary conditions
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I Expansion of 1/|x-x'| into Legendre Polynomials
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I How Does Torque Affect Balance on a Self-Balancing Electric Unicycle?
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B Inertia and flying
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B Do Objects in Free Fall Encounter Air Resistance?
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I Express drag force/acceleration/velocity as function of time
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