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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.

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Mechanics

Observation about the rotation of a disc
27.6K threads
Graduate Observation about the rotation of a disc

Optics

Question about computing diffraction patterns
8.2K threads
High School Question about computing diffraction patterns

Thermodynamics

Musing on the Foundations of Statistical Mechanics
7.4K threads
Graduate Musing on the Foundations of Statistical Mechanics

Electromagnetism

A magnetostatics problem of interest 2
16.3K threads
Graduate A magnetostatics problem of interest 2
High School What's the connection between physics and scuba diving?
  • larianne
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1
Graduate Can Blade Breakage Be Detected without External Sensors?
  • mhabbal
  • · Replies 7 ·
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7
Graduate Timescale to propagate a perturbation through a system?
  • tonydoss
  • · Replies 4 ·
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4
Graduate Understanding the Complex Analytic Signal: Benefits and Uses | Forum Discussion
  • fisico30
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1
High School Why is that an atom doesn't absorb more than the required amount of energy.?
  • srikanth
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3
Undergrad Harmonic to have an amplitude higher than the fundamental
  • p.tryon
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1
Undergrad What sensor can control a farm equipment's turns based on distance?
  • sganesh88
  • · Replies 6 ·
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6
High School VGA Adapter Fire Incident: Possible Causes and Prevention Tips
  • DeepSeeded
  • · Replies 11 ·
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11
Undergrad Converting QNH to height knowing QFE
  • itsjustme
  • · Replies 9 ·
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9
What is Bulk Phase? French Translation
  • nchristedem
  • · Replies 1 ·
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1
Undergrad Operational Amplifier Dependencies
  • thedemon13666
  • · Replies 1 ·
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1
Graduate Head-on Elastic Collision & Wave-Particle Duality: Is There Something Deeper?
  • snoopies622
  • · Replies 12 ·
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12
High School Cold Weather Makes Snow Squeak: The Science Behind It
  • AEM
  • · Replies 4 ·
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4
Undergrad Is there a way to break down the Culomb?
  • swraman
  • · Replies 5 ·
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5
Undergrad Is Gauss' Law Applicable to Gravitational Fields?
  • iitjee10
  • · Replies 1 ·
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1
High School Mixing of Bubbles: Who is Correct? Explanation
  • iitjee10
  • · Replies 7 ·
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7
High School HiI want to create a small ventilator
  • shirel
  • · Replies 11 ·
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11
High School Unformal question about molecules of gases
  • fluidistic
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2
Graduate What Are the Correct Units for the Larmor Formula?
  • bdforbes
  • · Replies 3 ·
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3
Undergrad Which Rubber Ink Filling Method Maximizes Efficiency?
  • sr_philosophy
  • · Replies 8 ·
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8
Graduate How Can I Boost Creativity in Solving Physics Problems?
  • betyoudidntthink
  • · Replies 8 ·
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8
Graduate Question about intermolecular forces in gases
  • Austin0
  • · Replies 2 ·
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2
High School Why Do Molecules Move in the Absence of External Forces?
  • prj45
  • · Replies 36 ·
2
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36
Another spinning space station question
  • drcathyc
  • · Replies 12 ·
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12
Graduate Can someone please explain to me the concept of vortex breakdown?
  • sashankhrao
  • · Replies 5 ·
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5
High School Build a "Piano" with Solenoids: Material Selection & Diagrams
  • Minte
  • · Replies 3 ·
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3
High School Wind tunnels - A few questions
  • jonmah
  • · Replies 15 ·
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15
Graduate Why Is Infinite Velocity Characteristic of Diffusion Processes?
  • fisico30
  • · Replies 1 ·
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1
Undergrad Physics of BP Cuffs: Understand the Pressure Reading
  • mwaso
  • · Replies 3 ·
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3
Undergrad Max Amplitude of Underdamped Oscillation
  • vsharma88
  • · Replies 1 ·
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1
Graduate How Does Infinite Matter Distribution Affect Gravity in a Mineshaft?
  • PaulDent
  • · Replies 8 ·
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8
High School What is the exact definition of a wave?
  • granpa
  • · Replies 18 ·
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18
Table Tennis Topspin/Chop questions
  • Skhandelwal
  • · Replies 10 ·
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10
Undergrad Can Objects Float in Mid-Water?
  • virtueboy15
  • · Replies 2 ·
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2
Graduate General measure of chaoticity of a system?
  • Gerenuk
  • · Replies 1 ·
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1
High School What is a 3-Vector? - Definition & Meaning
  • fisico30
  • · Replies 6 ·
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6
High School What is the Degree of Order in Parallel Lines?
  • eranb2
  • · Replies 5 ·
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5
Undergrad Can mass be measured directly in the absence of gravity?
  • phyzmatix
  • · Replies 18 ·
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18
Undergrad How Does Adding Sand Affect Longitudinal Wave Displacement in Water?
  • Carter2x
  • · Replies 2 ·
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2
Undergrad Formula conventions and energy question
  • tony873004
  • · Replies 2 ·
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2
Graduate The property of impenetrability
  • xavier_r
  • · Replies 7 ·
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7
Where Can I Find Classic Works of Physics and Sciences Online?
  • artie
  • · Replies 3 ·
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3
Undergrad How does dissvoled gas bubbles move in solution?
  • rudolflai
  • · Replies 1 ·
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1
Graduate Predicting Contact Surface of Pressurized Balloons: Energy Minimization Method
  • ice109
  • · Replies 3 ·
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3
Graduate Hard Sphere Model: Colloids & Polymers Fluids
  • germana2006
  • · Replies 6 ·
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6
Graduate Solving Striae in Kundt Tube Vibrations
  • DaTario
  • · Replies 4 ·
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4
Nostalgia for a Physical Thing That No Longer Exists
  • pedong
  • · Replies 5 ·
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5
Undergrad Atmospheric Density - Equation to Model from Sea Level to 200km
  • ZachWeiner
  • · Replies 5 ·
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5
Undergrad Can Supercooling Have Practical Uses Beyond Hiking Heating Packs?
  • Siracuse
  • · Replies 2 ·
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2
Undergrad Understanding the Logarithm of K in DeltaG
  • aniketp
  • · Replies 3 ·
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3
Undergrad Headphone sealed for bass, open to midrange
  • Loren Booda
  • · Replies 2 ·
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2
Graduate Boundary conditions for fluid flow
  • Euclid
  • · Replies 2 ·
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2
Graduate Calculating Force for Imprinting Photoresist with a Stamp
  • Warr
  • · Replies 4 ·
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4
High School What factors determine the maximum length of a snorkel?
  • yasar1967
  • · Replies 4 ·
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4
Graduate Could Gravity Change at Near Absolute Zero?
  • qaqtos
  • · Replies 9 ·
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9
High School Pink Floyd + Helium: What Would the Sound Be?
  • yasar1967
  • · Replies 2 ·
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2
Undergrad Why doesn't gravity violate LoCE?
  • Crazy Tosser
  • · Replies 5 ·
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5
Undergrad Automobile batteries and internal resistesnce
  • harini_5
  • · Replies 1 ·
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1
High School Why is copper wire not commonly used in potentiometers?
  • harini_5
  • · Replies 1 ·
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1
Undergrad Roofing felt bubbled up because of cold weather?
  • stickythighs
  • · Replies 18 ·
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18
Undergrad Diffusion Coefficient of CO2 in Air - Raymond
  • vgbraymond
  • · Replies 1 ·
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1
Graduate Computing cone equation using data points
  • Saeid
  • · Replies 3 ·
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3
Graduate What is the definition of correlation and coupling?
  • lsloneil
  • · Replies 1 ·
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1
Undergrad Valves: Principles & Operation of Heart & Reed Valves
  • Samwel
  • · Replies 8 ·
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8
High School Unveiling the Mystery Behind White Ice
  • Golshan
  • · Replies 4 ·
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4
Undergrad Comparison of attraction/repulsion measures
  • fer2000
  • · Replies 3 ·
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3
High School Are There Any TV Shows or Movies with Outrageous Physics?
  • Grimace
  • · Replies 2 ·
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2
Undergrad Why Does the Pitch Change When Tapping a Spoon in a Cup of Spinning Coffee?
  • garytse86
  • · Replies 10 ·
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10
High School Can anyonewe suggest an extended essay project for me in physics
  • danjroman
  • · Replies 2 ·
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2
How Important Is Posting in the Correct Online Forum?
  • Tom1
  • · Replies 1 ·
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1
Undergrad Creating Wrong Answers for a Question Paper
  • Sourabh N
  • · Replies 11 ·
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11
Undergrad The geometric center of the Earth and the center of mass
  • pixel01
  • · Replies 9 ·
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9
High School Convert Mol/L to kg/m3: Step-by-Step Guide
  • Stupid_Engine
  • · Replies 3 ·
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3
Thane Heins and his free energy machine
  • Captain Barbosa
  • · Replies 1 ·
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1
Undergrad The Fall of Classical Physics: From Newton to Einstein
  • momentum360
  • · Replies 8 ·
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8
Undergrad Difference between CM and QM
  • shalu
  • · Replies 14 ·
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14
Undergrad What does the term Action means in physics?
  • Himanshu
  • · Replies 9 ·
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9
High School How can I protect an egg from cracking with limited materials?
  • pandabento09
  • · Replies 6 ·
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6
Graduate Will a superconducting dynamo in space produce free energy?
  • johnfullerroot
  • · Replies 19 ·
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19
Undergrad Calculating Calories Used Running
  • pman
  • · Replies 6 ·
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6
High School Litteraure about Waves and Oscillation
  • crillegs
  • · Replies 3 ·
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3
Undergrad Speed of Sound vs Light - Possible?
  • aman malik
  • · Replies 11 ·
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11
High School Did Pascal Conduct the Barrel Experiment?
  • hamilton333
  • · Replies 2 ·
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2
High School Um, first of all, why was my post locked? all i wanted was to know how
  • tc_kid
  • · Replies 3 ·
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3
Undergrad Speed of Spherical Waves: How Fast is v?
  • pardesi
  • · Replies 10 ·
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10
Undergrad Gravity: Is Matter Mostly Empty Space?
  • BosonJaw
  • · Replies 6 ·
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6
Graduate How can Green's function be used to calculate charge density of states?
  • Tanja
  • · Replies 3 ·
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3
Graduate Helium diffusion through metals
  • hdsz243
  • · Replies 1 ·
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1
Understanding the Meaning of Pull? and Push? in a Picture
  • stmartin
  • · Replies 1 ·
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1
High School Trying to understand absolute uncertainties in geometric shapes
  • memsces
  • · Replies 1 ·
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1
Undergrad Why are the calculated energies for two oscillating waves not equal?
  • thuanthuan
  • · Replies 1 ·
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1
Undergrad Understanding Green's Theorem: An Overview
  • gouranga
  • · Replies 2 ·
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2
Undergrad Lissajous Figures Applications
  • ecthelion4
  • · Replies 4 ·
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4
Graduate Spontaneous wavefronts in a flat flow
  • gbell
  • · Replies 2 ·
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2
Undergrad Topics re harmonic oscillators
  • radiogaga35
  • · Replies 2 ·
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2
Gravity is negative for example (-0.1)
  • vvt
  • · Replies 2 ·
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2
Undergrad How Do Mechanical and Electromagnetic Waves Propagate?
  • Rainbow
  • · Replies 12 ·
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12
Graduate Can Math Help Predict Binding Energies in Enzymology and Crystallography?
  • Bigpharma
  • · Replies 15 ·
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15
Undergrad Speed of Sound in Materials: Impact on "Vaporization" Gun
  • Jota
  • · Replies 1 ·
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1
Undergrad Understanding the Mean Value Theorem for Differentiation
  • ice109
  • · Replies 7 ·
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7