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

High School Mousetrap Car Energy efficiency

Optics

Undergrad How do I stretch a laser from a beam into a sheet?

Thermodynamics

Undergrad Using the "triple point of water" to produce ice -- How does that work?

Electromagnetism

Undergrad What determines if wave components are independent vs coherent?
High School If I double sound on my PC, how would the sound intensity increase?
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High School How to calculate a random measurement error?
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Undergrad Why is there no frost below a certain temperature?
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High School Falling Cat - Rotation with Zero Total Angular Momentum
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High School Does the prism equation (i+e = A+δ) apply to all prisms?
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Undergrad How to find the equation of motion using Lagrange's equation?
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Undergrad Power available to a wind powered vehicle traveling directly downwind
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Graduate Question about Damped Oscillations
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High School What magnetic fields can this hollow rod shield?
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High School Air pressure generated by driving at 60mph
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High School Voltage & Current: Explaining the Basics for Beginners
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Undergrad What happens to resistance of tap water as voltage is increased?
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Undergrad Why is length considered a fundamental (base) quantity?
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Undergrad Equation of motion: choice of generalized coordinates
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Undergrad Alternative Approach to Solving Foucault's Pendulum Behavior
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Undergrad What does vector subtraction for two non-perpendicular vectors look like?
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Undergrad Does Pulse and Glide only work with manual transmissions and a kill switch?
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Undergrad Car low average speed vs aero drag relation
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High School Correct SHM Equation: Does € Matter?
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Undergrad Conservative forces and internal and external forces
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High School How does a bathtub/shower diverter valve work?
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High School Causation: substance or event?
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Undergrad Question about Waves -- "frequency" versus "angular frequency"
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Undergrad I'm confused on which equation gives percentage uncertainty
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Undergrad Vertical acceleration of the water bubbles in a kettle?
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Undergrad Car drag coefficent vs fuel consumption link
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Undergrad About Bernoulli's equation for fluid flow
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Graduate Normal force and force of friction inside a tube
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Undergrad Extremely strange consequence of the speed of heat value
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Undergrad Relationship between viscosity and velocity in fluid mechanics
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High School Understanding the Doppler Effect at an Angle
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Undergrad I would like a better understanding of friction and hysteresis
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Graduate Why are Euler's angles picked exactly that way?
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High School Can Metal Pins Increase Heat Transfer in Concrete Walls?
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Undergrad Parameters of the rough surface (for electromagnetic scattering)
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Undergrad Can a Tower of Books Move with Lighter Forces?
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High School Where am I wrong in this travelling faster than light Idea I've had?
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Undergrad I found 2 formulas about surface tension -- which one is correct?
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Undergrad Fundamental - Magnetic fields generated by moving electrons
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High School Fundamental Problems With Exam Question: Moving Truck & Acceleration
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High School Question about inductive and deductive arguments in science
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High School How many electrons to make a stable gravitational object?
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High School Rice Field Bubbles: Gotcha! Why?
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Undergrad Question about elasticity to help my understanding
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Undergrad Reaction force of and its relation to normal force and friction
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Undergrad Momentum of a Water Jet Impacting Plate
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Undergrad Brownian motion of charged particles?
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Graduate How Can Skeletal Models and Physics Help Us Understand Pain Perception?
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High School Doppler effect on electromagnetic waves in a car
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High School Multimode optical fiber, physics beginner help :D
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High School Acceleration -- How is the intermediate displacement speed derived?
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High School Tangran, Inertial Mass and Gravitational Mass
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Graduate Spectrum of the Liouville Operator
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Undergrad Water powered funicular with equal masses?
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High School Can anyone tell me some formulas for acceleration?
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Undergrad Comprehensive List of Mechanics Formulations
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Undergrad Kepler orbits for planets of similar masses
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Undergrad Air friction in rotating ring magnet
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Undergrad Distributed Forces and force density....
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Undergrad Does the electrical force also respect the Kepler Laws?
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Undergrad Can trains use permanent magnets to be propelled?
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Undergrad Does the speed of light imply ....
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Undergrad Required Strength of a Strap connecting 2 Rolls
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Undergrad Hamilton's Principle (HP), Lagrangian
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Graduate Contravariance, Covariance, stress and position vector
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Undergrad Integrating discs to find the gravitational force of a sphere
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High School This rocket physics problem seems unrealistic
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Undergrad Pendulum Tension Force -- How to calculate the full vector?
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Undergrad Looking for a trajectory integrator that also supports cubic potential
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Undergrad How Do Magnetic Forces Differ Between Magnets and Wires?
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Undergrad Why Are 8 Valence Electrons Essential for Atomic Stability?
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Undergrad Acceleration From Rest Under Constant Power
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High School How to understand the steradians equation for measuring a sphere of light?
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Undergrad Query on Electromagnetic Theory (Dielectric Boundary Conditions)
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Undergrad What Causes the Initial Acceleration Phase in Molecular Behavior?
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Undergrad Changes to a spinning skater's angular velocity
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High School Gravitational acceleration and sub-atomic electric charge
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Undergrad Car acceleration if resistance forces don't exist
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Undergrad Water converted to plasma -- how does this work?
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Undergrad Error tolerant normal mode frequency
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Graduate Principle of Virtual Work and the forces that DO NOT do work
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Undergrad (Airfoil) Why do boats have a pointy bow?
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High School The 3D Universe: A Speck in the 4D Universe
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Why doesn't helium have any effect on the sound of my voice?
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Graduate Independence of generalized coordinates and generalized velocities
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Undergrad Can Leverages and Propellers Work Together to Create Efficient Movement?
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Undergrad Do objects of differing mass fall at the same rate in a magnetic field?
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Undergrad How does a screw roll down an inclined plane?
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Undergrad Uncovering the Secrets of Water Slide Physics
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High School How and why can multiplication combine physical quantities?
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Undergrad Number of Sig Figures and Precision
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Undergrad Interpreting solar event flux units
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Undergrad Difference Between Resistance Force and Friction Coefficient?
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Graduate Explicit non-holonomic equations of motion
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Undergrad EM Four-Potential and INDUCED Electric Fields
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MHB How Do Conic Sections Relate to Orbital Mechanics?
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Undergrad Why do droplets of condensation run at an angle on a plastic sheet?
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Graduate The force from the energy gradient
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High School What's the reason microwave oven frequencies are at 2.45 Ghz?
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High School Equivalence of Frictional and Applied Force
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