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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
27.6K threads
Undergrad A Toy Model of Atmospheric Geophysics

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
Help Finding Book: An Introduction to Mechanics by Daniel Kleppner
  • aguirre2424
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High School Weight of a Fully Charged vs Discharged Battery
  • starkind
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Graduate Using Euler's equations to model ocean waves
  • Signifier
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High School Looking for pipe flow information in cubic feet per minute.
  • 5.0stang
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2
Undergrad Making an Informed Decision on Physics Engines for Games
  • Adder_Noir
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Undergrad Form of the solution of wave equation
  • neelakash
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High School Where Can I Learn About Vectors Online?
  • zapta
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1
Undergrad Where Does the Energy Go in Noise Cancellation and Sound Wave Interference?
  • Jallu
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Graduate Gravitational Intensity on Thin Spherical Shell: Is it Ethical?
  • neelakash
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High School Experiment involving Coke and PC Cola
  • anniw
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6
Undergrad The Growth of Potholes: Understanding Their Nature and How to Repair Them
  • Loren Booda
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3
Thawing Frozen Meat: The Fur vs. Water Method
  • just...DVL
  • · Replies 12 ·
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12
Undergrad What is the Best Lab Apparatus for Measuring Volume of Irregular Objects?
  • saplingg
  • · Replies 3 ·
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3
Graduate Kinetic Energy: T or K in Mechanics/QM?
  • pivoxa15
  • · Replies 3 ·
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3
High School Can Gasoline Help Cool Air? A Theory and Discussion
  • 5.0stang
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2
Undergrad Discovering Ceres: Gauss and the Least Square Approach
  • mitchell2007
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Undergrad Please help with this paragraph of the article, i dont understand
  • wmac
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6
Undergrad What Would Happen if the Earth Was Flat and There Was No Gravity?
  • samtheham
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8
Graduate Condition of a vector field F being conservative is curl F = 0,
  • Kolahal Bhattacharya
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8
Undergrad Could Tesla's Wardenclyffe Tower Have Revolutionized Wireless Energy Transfer?
  • Phinks
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5
Graduate Why Is the Source Term Crucial in Differential Equations?
  • fisico30
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Graduate What is the difference between nonlinearity and chaos, or..
  • impendingChaos
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3
Graduate Time invarient pdf but nonstationary process
  • shifo79
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4
High School What is the true definition of energy in physics?
  • Behrooz
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19
High School What does quantities and dimensions mean?
  • elton_fan
  • · Replies 5 ·
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5
Undergrad What Is the Phenomenon of a Frozen Wave in Physics Labs?
  • Gaijinja
  • · Replies 7 ·
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7
Graduate How Does Anhedral Rigging Enhance Sailboat Performance?
  • ken
  • · Replies 7 ·
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7
Graduate Ferrofluids, gravity, Pascal and Arquimedes.
  • cala
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10
Undergrad Do Computer Icons Follow Classical or Quantum Physics?
  • Rade
  • · Replies 33 ·
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Undergrad Create Standing Waves with Antinodes at the Ends
  • huh
  • · Replies 7 ·
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7
Graduate Are There Alternatives to Mass Spectrometry for Measuring Charged Particles?
  • Sheyr
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1
High School What Creates a Stronger Vacuum: 15inHG or 10inHG?
  • Ruffian
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2
Graduate Solve Wave Equation with D'Alembert's Solution
  • actionintegral
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9
High School Logitudinal and Transverse wave
  • bchui
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1
Graduate Why are Kramers-Kroning relations useful?
  • quasar987
  • · Replies 7 ·
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7
Graduate What is the origin of the reciprocity theorem in optics?
  • Wiemster
  • · Replies 10 ·
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10
Undergrad Stress-strain relation material property
  • chandran
  • · Replies 11 ·
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11
High School Understanding the Importance of Constants in Proportional Formulas
  • mphr
  • · Replies 4 ·
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4
Make a Relaxing Electric Current Device at Home
  • eltranced
  • · Replies 7 ·
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7
Undergrad Calculus-integration over mass
  • chandran
  • · Replies 3 ·
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3
Undergrad What Is the Role of Ions in Human Electric Conduction During a Shock?
  • brendan_foo
  • · Replies 4 ·
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4
Coffee Grains Mysteriously Moving: A Puzzling Sight
  • TuviaDaCat
  • · Replies 2 ·
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2
New Theory on why tornadoes occur.
  • meldave00
  • · Replies 2 ·
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2
Graduate Can a Debye Layer Form in Air?
  • Clausius2
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2
High School Why doesn't the sky crush us all?
  • doubleB
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2
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Graduate What Does Comoving Time Rate of Change Mean?
  • gran_johansen
  • · Replies 2 ·
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2
Graduate Is information a physical quantity?
  • lalbatros
  • · Replies 12 ·
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12
High School Questions about classsical physics units.
  • scott1
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6
Graduate Flexural Waves: Kelvin-Voigt Solid Questions
  • psv
  • · Replies 6 ·
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6
Undergrad Unravelling the Concept of Mass
  • RipClaw
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Graduate Finding an expression for dissonance
  • JoAuSc
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4
High School What is path length difference?
  • seang
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2
Undergrad Can note bending on a trumpet be explained through physics?
  • Ba
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23
High School Differences Between Sound Wave Intensity, Loudness & Quality + Vacuum Experiment
  • duoheer
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1
Undergrad Why Does Gravitational Pull Drop to Zero at the Earth's Center?
  • Pyrrhus
  • · Replies 8 ·
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8
Undergrad Natural and Fundamental Frequencies
  • duoheer
  • · Replies 1 ·
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1
Undergrad How do bubbles in fizzy drinks get attracted to the walls and bottom of a cup?
  • Chen
  • · Replies 6 ·
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6
Undergrad What Is the Name of the Curve Traced by a Ball on a Ripple Wave?
  • topito2
  • · Replies 1 ·
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1
Undergrad What causes sonometer wire to vibrate in A.C Sonometer experiments?
  • Amith2006
  • · Replies 1 ·
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1
High School Demystifying Guitar Pickups: Understanding Humbuckers and Eliminating Buzz
  • Wishbone
  • · Replies 4 ·
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4
High School Why Does the Earth Keep Spinning?
  • neo143
  • · Replies 5 ·
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5
Graduate What are some resources for modeling fluid flow in porous mediums?
  • pmb_phy
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3
High School Why the molecules still moving to create the diffusion and the effusion?
  • WARGREYMONKKTL
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High School Running up and down stairs to reduce creaking.
  • wasteofo2
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10
Graduate What Is the Nature of Vacuum and Empty Space?
  • iyalcin
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7
Graduate Can Solitons Predict the Future of Traveling Waves?
  • somasimple
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15
Undergrad Circular Wave Equations: Pebble Dropped in a Pond
  • rlduncan
  • · Replies 8 ·
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8
The radio stops when I get near it.
  • PIT2
  • · Replies 2 ·
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2
Undergrad Unraveling the Mysteries of Dambler Force
  • Alkhimey
  • · Replies 8 ·
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8
Graduate Certainty and Classical Physics
  • reilly
  • · Replies 11 ·
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11
Undergrad Question about Poisseuille's law and blood flow
  • don_anon25
  • · Replies 1 ·
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1
High School Why a duck's quack doesn't echo
  • tino lin
  • · Replies 4 ·
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4
Undergrad Definition of the number of dimensions of a vector space
  • asdf60
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Graduate Windmill boat on river, no wind
  • Peter A. Sharp
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10
Undergrad What is the Young's Modulus of Panzani Spaghetti?
  • simon.m
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4
High School What are Sound Waves & Why Can't We Hear Some?
  • amitmis
  • · Replies 2 ·
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2
Graduate 3D Acoustical Wave Eqn: Closed Soln in Rectangle Coordinates
  • Watts
  • · Replies 5 ·
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5
Undergrad Understanding Dot Product: Identity and Unit Vectors
  • don_anon25
  • · Replies 2 ·
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2
Free Airflow Simulation Software: Find the Right Solution for You!
  • philippeF
  • · Replies 4 ·
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4
High School What is Chaos? An Introduction for Beginners
  • LedZep_Kamal
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18
Undergrad Ion Sputtering: Finding Resources for Knowledge
  • lizq
  • · Replies 3 ·
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3
Graduate What Makes Slow Waves Crucial in Guided Wave Structures?
  • alexyan
  • · Replies 1 ·
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1
High School What is the name of the physics law
  • OSalcido
  • · Replies 7 ·
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7
Undergrad Energy Principle: Explained and Named
  • lconrad
  • · Replies 27 ·
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27
Undergrad Mystery of How a Drinking Glass Shatters Without Help
  • stagedradio
  • · Replies 2 ·
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2
Undergrad Why Does Air-Lock Reduce Fluid Flow in Tubes?
  • sarmin
  • · Replies 1 ·
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1
High School Find the Formula for Bulk Modulus
  • isabella
  • · Replies 3 ·
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3
High School Liquids with different densities
  • strid
  • · Replies 9 ·
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9
Can anyone recommend a good gyroscope
  • quasi426
  • · Replies 3 ·
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3
Graduate What is the definition of a density function in cartesian coordinates?
  • quasar987
  • · Replies 15 ·
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15
Is True Levitation Beyond Our Reach?
  • mrfeathers
  • · Replies 12 ·
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12
High School How do i write mathemtical formula
  • sniffer
  • · Replies 1 ·
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1
Graduate What's the hypostasis of wave?
  • lby
  • · Replies 1 ·
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1
Simulate Physical Objects with Computer Program
  • philosophiae
  • · Replies 6 ·
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6
Troubleshooting Screen Door Closure: Tips and Tricks | Greetings
  • tungsten
  • · Replies 1 ·
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1
High School How Can I Determine Speed and Frequency with Only a Wavelength Component?
  • StarGazer92
  • · Replies 1 ·
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1
Undergrad Varying densities and wave propogation
  • WY
  • · Replies 3 ·
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3
Undergrad Action at a Distance: History & Meaning
  • somy
  • · Replies 2 ·
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2
High School Vocabulary: The Conversion of Matter into Energy
  • Eldritch
  • · Replies 2 ·
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2
Graduate Can the wave equation accurately describe motion in waves with angles near 90°?
  • quasar987
  • · Replies 11 ·
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