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 Derivation of Hamilton's Principle: Questions

Optics

B The focal length of the eye and image inversion

Thermodynamics

I Entropy and configurations of microstates

Electromagnetism

A Free surface problem in electrohydrodynamics
B Highway: Deriving speed from Doppler shift
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B What qualities does time have other than linearity, motion, and speed?
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B Light speedup question
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B Question about pressure of a liquid
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B Why is the 3 body problem unsolvable? And what will happen if someone solves it?
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B Why is displacement the integral of acceleration with respect to time? [corrected in thread]
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B Understanding Newton's Third Law and the Net Force on Objects
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B Work done when moving an object
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B Why Does a Spring Return to Its Original Position After Being Stretched?
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B Simple mass/scale puzzle
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B Ultrasonic wave and regular sound wave
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B Why Does Hooke's Law Use a Negative Sign in Scalar Form?
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B Which technique has been used? (drowning victim recovery in a lake)
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B (Electric) current is not a vector quantity
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B Use Surface-Volume to approximate gravity for planets and protons
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B An explosion under a pile of timber and rocks
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B EMF induced by Bar Magnet falling through a Coil
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B Slow Motion Appearance of Flags: Fluid Dynamics or Perceptual Illusion?
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B Why do sails on a boat generate lift perpendicular to the sails?
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B Problems with modelling the vertical motion of a dust particle
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B Deacceleration causes object to move backwards?
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B Question about Newton's 3rd law: Two boxes sliding toward each other and colliding
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B The horizontal speed of an object does not affect the time it takes to fall vertically?
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B What limits a rocket's max speed if in space drag is zero?
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B Inertia of a rolling dumbell
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B Symbol for temperature on the Fahrenheit scale
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B Temperature-Dependence of Viscosity of a Fluid?
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B Mass and space in atoms
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B Why do objects bounce?
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B How to use magnets in levitation?
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B Would there be any varying forces acting on individual wells in rotation? (stir/shaker plate)
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B Doubt regarding relative acceleration
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B Not sure about the magnetic flux (phi) depending on a cosine function
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B Is water pressure on an inclined wall less than the weight of the water?
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B Electric Field Direction: Are We Assuming a Universal Positive Frame?
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B Constant jerk motion: acceleration vs. position
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B Why did Rutherford conclude the atom was mostly empty space?
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B Formal definition of work done
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B Torque Calculation - Not a basic application
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B What is Mass?
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B Why does hot water rise to the top of a water heater?
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B Will there be water coming out of the last hole?
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B Measuring Shock Absorbency / Kinetic Energy
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B Conservation of energy demo -- An upgrade to the standard version
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B Why do things burn up in the atmosphere but not in the ocean?
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B How to understand formula for bending of a rectangular rod?
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B How does an object gain potential energy?
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B Energy Efficient Boiling of Eggs
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B Power from global loop power cable ?
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B Vertical Compression Strength of Different Hollow Rods
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B Time to fall from 200 miles
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B Creating drag to reduce falling speed
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B Difference between holographic paper and diffraction gratings?
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B Acceleration as a function of position
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B Can we measure absolute motion of Earth and Sun?
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B Rotating Capacitor: Concentrating energy using accessible technology
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B Is all EM radiation light?
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B Balancing on Pulley system
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B Hold a hammer at the top vs bottom of the handle
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B Strain on a foil sheet separating two compartments in a cylinder
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4
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B What is the speed of "motion"?
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B Rotational Kinematics -- questions about a=mg sin(theta) / (m+I/R^2)
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B Formula for time in terms of acceleration and distance
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B Newton's First Law -- Mistranslated for 3 centuries
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B Simulate an altitude at 16000-18000 feet with water depth
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B Friction forces on the tires of a moving car
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B 4 pounds over the weight limit of a tv stand
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B Why 186,282?
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B Electric cars: Could the rotation of tires be used to generate electricity and lengthen range?
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B Is this equation at all sensical?
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B What happens to the energy in destructive interference?
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B Tangential Velocity (maybe)
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B Can Ionic Compounds conduct electricity in a gaseous state?
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B The power output of a vehicle when descending hills
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B Why does my LC circuit not oscillate its energy between Electric & Magnetic fields?
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B Newton's Third Law Question -- Does the Earth Do Work on Me?
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B Confusion about Wave Motion
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B Stopping power of rifle slugs
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B Questions about Noether's theorem -- Conservation of Energy and Mass
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B Does the shape of an object affect the pressure?
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B My head spins when I think about time
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B How to Fulcrum weigh camper trailer on bathroom scales?
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B Compressive force of a shorter cylindrical bone vs a longer one
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B Curious about the uniform electric field between metal plates
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B Rubber Bands & Paper Attraction
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B Trying to understand hydrostatic pressure
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B Why doesn't a charged particle moving at a constant speed radiate?
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B Trying to understand hydrostatic pressure with different vessel widths
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B If the source of the pressure distribution around a lifting airfoil is known, why is not explained in textbooks?
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B Vacuum surface area balance and force
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B Fully submerged block in a pool of water
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B I have a doubt about the pressures at the same level of fluids
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B Can sound travel through clay?
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B Torsion Involving an Off Axis Thrust
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B The inverse-square law: Gravitational force on two falling marbles
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B Speed vs. time for our Galaxy and an Observer
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B Magnet inside a solenoid with current
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B Electric field on the equatorial line of a dipole
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B Rolling Without Slipping on an Inclined Plane
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B Electric Field Inside a Hollow Sphere
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Classical Physics

Welcome to the Classical Physics forum!

Classical physics refers to the traditional theories and principles of physics developed before the advent of quantum mechanics and relativity in the early 20th century. It includes classical mechanics, electromagnetism, and thermodynamics.

Classical mechanics, formulated by Newton, describes the motion of objects and the forces acting upon them. Maxwell's equations encompass classical electromagnetism, elucidating the behavior of electric and magnetic fields. Thermodynamics, developed by Carnot and others, focuses on the principles governing heat, work, and energy transfer in macroscopic systems.

While highly successful in explaining everyday phenomena, classical physics encountered limitations at extreme scales, leading to the development of quantum mechanics and relativity to describe the behavior of particles at the atomic and cosmic levels, respectively.

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