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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

A Toy Model of Atmospheric Geophysics

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Undergrad A Toy Model of Atmospheric Geophysics

Saturday, 12:09 PM

Optics

Question about computing diffraction patterns

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High School Question about computing diffraction patterns

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Thermodynamics

Musing on the Foundations of Statistical Mechanics

7.4K threadsJun 12, 2026

Graduate Musing on the Foundations of Statistical Mechanics

Jun 12, 2026

Electromagnetism

A magnetostatics problem of interest 2

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Graduate A magnetostatics problem of interest 2

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High School What is the Meaning of End Correction?

bepunctual
May 15, 2005 · Replies 3 · May 15, 2005

Replies: 3

Bring 12V DC Home: An Idea to Reduce Transformer Clutter

WarrickF
May 11, 2005 · Replies 39 · May 13, 2005

Replies: 39

High School Is the sun moving simple harmonically up and down also?

nishant
May 11, 2005 · Replies 6 · May 12, 2005

Replies: 6

Graduate Have a Solution for the Exploding Grenade Problem?

metrictensor
Apr 28, 2005 · Replies 8 · Apr 29, 2005

Replies: 8

High School Radius of Gyration: Definition, Applications & Examples

chandran
Apr 14, 2005 · Replies 3 · Apr 27, 2005

Replies: 3

Graduate Waves Dispersion? can someone help explain?

belleamie
Apr 20, 2005 · Replies 3 · Apr 21, 2005

Replies: 3

Undergrad Differences between Del Operators at Field/Source Points

newbie101
Apr 20, 2005 · Replies 8 · Apr 20, 2005

Replies: 8

Undergrad How do standing waves form on strings without a vibrator?

Cheman
Mar 24, 2005 · Replies 3 · Mar 25, 2005

Replies: 3

High School Nature of Waves: Why Do They Form?

LightRocks
Mar 16, 2005 · Replies 6 · Mar 17, 2005

Replies: 6

Find Free Physics Ebooks - Quantum & Relativity

heaven eye
Mar 12, 2005 · Replies 3 · Mar 14, 2005

Replies: 3

Undergrad Maximum distance between things connected to a point (3D trig)

ShawnD
Mar 3, 2005 · Replies 4 · Mar 5, 2005

Replies: 4

High School What Happens to Boiling Water in Zero Gravity?

evthis
Mar 3, 2005 · Replies 1 · Mar 3, 2005

Replies: 1

Undergrad Math student looking for introductory book in physics

mackan__787
Feb 27, 2005 · Replies 4 · Feb 27, 2005

Replies: 4

Access "The Period of F = -kx^n" for Free - Chris Hirata & David Thiessen

maverick280857
Feb 21, 2005 · Replies 5 · Feb 23, 2005

Replies: 5

Graduate Unit vector normal to scalar field

Reshma
Feb 7, 2005 · Replies 2 · Feb 7, 2005

Replies: 2

High School Unveiling the Mystery Behind r^2 in F=Gm1m2/r^2

Mehrsa
Feb 3, 2005 · Replies 16 · Feb 6, 2005

Replies: 16

Undergrad Complexity Concept in Statistical Mech.

yakaza
Feb 6, 2005 · Replies 1 · Feb 6, 2005

Replies: 1

Graduate Random Walk Problem: Finding Relative Dispersion

Goldenlemur
Jan 31, 2005 · Replies 1 · Jan 31, 2005

Replies: 1

Undergrad Why do the Doppler effect equations yield different frequencies?

Zeteg
Jan 18, 2005 · Replies 9 · Jan 23, 2005

Replies: 9

Is Rarefaction and Compression Related to Changes in Density?

DB
Jan 23, 2005 · Replies 1 · Jan 23, 2005

Replies: 1

High School Could a Gyroscopic Effect Explain the 21-Gram Soul Theory?

robousy
Jan 22, 2005 · Replies 5 · Jan 22, 2005

Replies: 5

High School Explain me about Microfluid and its applications?

EngTechno
Jan 12, 2005 · Replies 1 · Jan 13, 2005

Replies: 1

Undergrad Understanding Line Integrals with Respect to Delta X and Delta Y

Cyrus
Dec 19, 2004 · Replies 68 · Jan 9, 2005

Replies: 68

Undergrad Can Humans Hear Electromagnetic Waves?

smithpa9
Dec 22, 2004 · Replies 9 · Dec 23, 2004

Replies: 9

High School Is the FL behavior in high-Tc superconductors still a mystery?

Oliminator
Dec 9, 2004 · Replies 19 · Dec 16, 2004

Replies: 19

Undergrad Dr. Winglees Spacecraft And Weather Modificatio

errorist
Dec 15, 2004 · Replies 6 · Dec 15, 2004

Replies: 6

Undergrad Modifying Hurricanes and Preventing Tornados: The Giant Pump of the Earth

errorist
Dec 15, 2004 · Replies 15 · Dec 15, 2004

Replies: 15

Undergrad How Can You Calculate the Bonding Energy Difference Between O2 and O3?

JosephRombousky
Nov 19, 2004 · Replies 1 · Nov 21, 2004

Replies: 1

Undergrad Different monitors for N & S hemispheres?

rhia
Nov 18, 2004 · Replies 2 · Nov 20, 2004

Replies: 2

Help with Serway-Beichner solutions

IrdMaster
Nov 8, 2004 · Replies 2 · Nov 9, 2004

Replies: 2

High School AHHHH enone knows how to answer dis question?

Joanna
Oct 31, 2004 · Replies 10 · Nov 1, 2004

Replies: 10

Constructing a small EMP device?

Zeteg
Oct 30, 2004 · Replies 4 · Oct 31, 2004

Replies: 4

High School What actually is energy and why is it conserved

retupmoc
Oct 17, 2004 · Replies 2 · Oct 17, 2004

Replies: 2

High School Investigatory project help pleeeaassee

honz415
Oct 8, 2004 · Replies 2 · Oct 10, 2004

Replies: 2

High School Explaining Archimedes Principle to Kids 9-10

actingbiz1
Sep 25, 2004 · Replies 4 · Sep 27, 2004

Replies: 4

Undergrad Dipole in physics and Chemistry

Simonnava
Sep 24, 2004 · Replies 2 · Sep 24, 2004

Replies: 2

High School Weird Glass Behaviour: Find Out What Happened

Ghiret
Sep 16, 2004 · Replies 2 · Sep 16, 2004

Replies: 2

Gravity Goes Weird: What Science Says

mee
Sep 13, 2004 · Replies 5 · Sep 15, 2004

Replies: 5

High School Discover Physics Extended Essay Topics: Expert Guidance and Tips

tnorkhangpa
Sep 10, 2004 · Replies 1 · Sep 13, 2004

Replies: 1

High School Nitrogen fixation process of bacteria

Cyrus
Sep 12, 2004 · Replies 6 · Sep 12, 2004

Replies: 6

High School Is there a Gravity-Free Spot at Earth's Center?

The Green Giant
Aug 9, 2004 · Replies 7 · Sep 3, 2004

Replies: 7

Help With Physics Investigatory Project

nyita
Aug 24, 2004 · Replies 2 · Aug 24, 2004

Replies: 2

Undergrad Is Chaos Defined? An Exploration

Mk
Jul 27, 2004 · Replies 10 · Aug 1, 2004

Replies: 10

High School What Is the Space Entity with Quantity "Volume"?

mani
Jul 29, 2004 · Replies 13 · Jul 31, 2004

Replies: 13

Undergrad Numerical Methods and Spreadsheet Physics

cj
Jul 12, 2004 · Replies 12 · Jul 14, 2004

Replies: 12

Undergrad How Does Ionization Affect the Behavior and Speed of Air Molecules?

Dburghoff
Jun 22, 2004 · Replies 6 · Jul 10, 2004

Replies: 6

Graduate Can Supersonic Waves Exist in Solids?

Clausius2
Jun 23, 2004 · Replies 23 · Jun 29, 2004

Replies: 23

Undergrad Stealth Tech: Physics or Electronics?

EngTechno
Jun 20, 2004 · Replies 9 · Jun 23, 2004

Replies: 9

Undergrad Doppler Effect: Explaining Frequency Change & Applications

cutesoqq
Jun 12, 2004 · Replies 4 · Jun 13, 2004

Replies: 4

Graduate Do perfectly dense incompressible particles vibrate when struck?

one_raven
Jun 9, 2004 · Replies 4 · Jun 11, 2004

Replies: 4

Graduate What are some recommended intermediate level statistical mech. and E/M books?

theFuture
May 30, 2004 · Replies 5 · Jun 5, 2004

Replies: 5

When Do Physics Courses Start Getting Interesting?

Alem2000
May 31, 2004 · Replies 9 · Jun 2, 2004

Replies: 9

AP Physics Exam Results: How Did You Do?

Ebolamonk3y
May 12, 2004 · Replies 9 · May 17, 2004

Replies: 9

Stuck on Relativity Implications and LQG Images?

PRodQuanta
Apr 27, 2004 · Replies 5 · Apr 28, 2004

Replies: 5

High School Why Does the Sky Appear Blue?

DoctorReynaldo
Apr 22, 2004 · Replies 1 · Apr 22, 2004

Replies: 1

Undergrad Is it possible for a string to vibrate at multiple frequencies at once?

broegger
Apr 11, 2004 · Replies 9 · Apr 13, 2004

Replies: 9

Graduate Terminology that is inconsistent with basic physic definitions

Henry Jones
Apr 7, 2004 · Replies 2 · Apr 9, 2004

Replies: 2

Graduate Landau Series - Reviews and Feedback

Kalimaa23
Mar 3, 2004 · Replies 1 · Mar 9, 2004

Replies: 1

Undergrad Sources of gravitational fields

lamp post
Feb 27, 2004 · Replies 10 · Feb 29, 2004

Replies: 10

High School HS Cu vs Alu: Which is Best for Performance?

thesittingduck2
Feb 20, 2004 · Replies 11 · Feb 22, 2004

Replies: 11

Graduate K-Delta Function in Autocorrelation of Gaussian White Noise

dora
Feb 5, 2004 · Replies 2 · Feb 6, 2004

Replies: 2

Undergrad Bubble Physics: Modeling and Scripting for Realistic Bubbles

Pseudonym
Feb 4, 2004 · Replies 1 · Feb 4, 2004

Replies: 1

High School Please recommend physics REVIEW book

johntam
Feb 2, 2004 · Replies 1 · Feb 3, 2004

Replies: 1

High School Effects of a Vacuum: What Happens if Exposed?

Sociopath^e
Oct 3, 2003 · Replies 8 · Jan 26, 2004

Replies: 8

What are the properties of fire?

wasteofo2
Jan 18, 2004 · Replies 21 · Jan 25, 2004

Replies: 21

High School How much mass does the sun add to the earth each day?

S = k log w
Nov 3, 2003 · Replies 8 · Nov 6, 2003

Replies: 8

Undergrad Calculating Resonant Frequency of Water in a Cylindrical Pipe

petmar
Oct 29, 2003 · Replies 7 · Oct 30, 2003

Replies: 7

High School What Causes the Egg-Water Phenomenon?

wolfgang
Oct 12, 2003 · Replies 6 · Oct 15, 2003

Replies: 6

Classical Physics Forum

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Undergrad Why is thermal energy treated differently than other kinds of energy?

Graduate Does a moving particle count as a wave?

Undergrad Measured Spectrum of Stopped Wood Organ Pipe Shows ALL Overtones

Undergrad Is Water's Volume Expansion Upon Freezing an Intrinsic Property?

High School Is it safe to fly in a spinning hollow asteroid?

Insights Revisiting the Velocity-Time Function

Insights Remote Operated Gate Control System

Insights AI Enriched Problem Solving

Insights Thinking Outside The Box Versus Knowing What’s In The Box

Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality

Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect

Cray-2 Supercomputer Comparisons

Graduate Using the Homotopy Analysis method in QG and BSM for solving nasty DEs

Klaxon - Live Earthquake and Global Events Map

Interpreting FEXT NEXT crosstalk pattern into pcb trace geometry