Classical Physics Forum

Join expert classical physics discussion on the principles developed before the rise of relativity and quantum mechanics. Including mechanics, electrodynamics, thermodynamics, optics.

Threads

High School Differences between equations of SHM

  • castor
  • · Replies 7 ·
Replies
7

Undergrad Could 2 dimensional objects fill a 3 dimensional space?

  • Nav
  • · Replies 2 ·
Replies
2

Undergrad Standing waves on a moving string

  • d7vid
  • · Replies 8 ·
Replies
8

Undergrad Is there a solid with such a low density, it floats in air?

  • Alex299792458
  • · Replies 18 ·
Replies
18

Graduate Navier-Stokes Equations for a Compressible Fluid

  • Physicist97
  • · Replies 22 ·
Replies
22

High School Does viscosity have to do with density?

  • Alex299792458
  • · Replies 14 ·
Replies
14

Graduate Why can't pinging excite singing overtones?

  • spareine
  • · Replies 9 ·
Replies
9

Graduate Does fast shear wave speed vary with polarization in anisotropic materials?

  • fannyfanfanz
  • · Replies 2 ·
Replies
2

Graduate Odd (pretty) waveform for third harmonic of violin E-string

  • Ethan B.
  • · Replies 6 ·
Replies
6

Graduate Open-Ended Air Columns: Natural Freq of Cylinder?

  • Tam Le
  • · Replies 4 ·
Replies
4

Undergrad Creating Paints/Colors outside of Visible Range?

  • WWGD
  • · Replies 17 ·
Replies
17

High School Ideal cells in parallel combination

  • saurabh tiwari
  • · Replies 12 ·
Replies
12

Undergrad Is Sonoluminescence Research Allowed on This Site?

  • Ben Johnson
  • · Replies 1 ·
Replies
1

High School How can the Doppler equation be rearranged to solve for other variables?

  • Zoey Brown
  • · Replies 1 ·
Replies
1

High School Accuracy Defined: What Does 10% Mean?

  • sunmaggot
  • · Replies 5 ·
Replies
5

Insights Frequently Made Errors in Equation Handling - Comments

  • haruspex
  • · Replies 15 ·
Replies
15

Undergrad What affects the linear mass density of a string?

  • Samurai44
  • · Replies 1 ·
Replies
1

Graduate Are Time Periods of Combined Vibrations Always Commensurable?

  • NRa
  • · Replies 4 ·
Replies
4

Undergrad Switching between distance variables in a simple seismograph

  • shanepitts
  • · Replies 3 ·
Replies
3

Undergrad Cofactor Matrix Confusion: Solving for Minor Determinants

  • Wminus
  • · Replies 2 ·
Replies
2

Undergrad Why does resonance only occur when objects have the same natural frequency?

  • member 529879
  • · Replies 15 ·
Replies
15

High School How Can Understanding Basic Physics Concepts Improve Everyday Problem Solving?

  • AshUchiha
  • · Replies 17 ·
Replies
17

High School Waves traveling in all directions

  • member 529879
  • · Replies 6 ·
Replies
6

Undergrad Aluminium oxide surface and conductivity?

  • spareine
  • · Replies 3 ·
Replies
3

Undergrad Can Huygens Principle Be Applied to Waves on a String with Fixed Ends?

  • DaTario
  • · Replies 1 ·
Replies
1

High School What causes waves to dissipate in different mediums?

  • member 529879
  • · Replies 7 ·
Replies
7

High School The History of Ticker Timers in Physics Experiments

  • Parsa
  • · Replies 7 ·
Replies
7

Graduate Scaling Interpretation for 2-D Continuity PDE: What Does UH/L Represent?

  • member 428835
  • · Replies 4 ·
Replies
4

High School Finding collected count when given average value.

  • Hellreignz
  • · Replies 2 ·
Replies
2

Graduate Is there a relationship between amplitude response and phase?

  • manjuvenamma
  • · Replies 1 ·
Replies
1

High School Classical physics history books

  • Arlax
  • · Replies 10 ·
Replies
10

High School Why does the meniscus radius increase when capillary tube length is too short?

  • Joel Jacon
  • · Replies 6 ·
Replies
6

High School Why does humming at a certain pitch echo loudly in a tiled bathroom?

  • kay
  • · Replies 8 ·
Replies
8

Undergrad Understanding Solitons: How are they different from standard waves?

  • gentsagree
  • · Replies 1 ·
Replies
1

Undergrad Solve Physics Puzzle Problem - 200 Puzzling Physics Problems

  • c++guru
  • · Replies 11 ·
Replies
11

Graduate Guitarist in search of practical answers

  • GuitarBizarre
  • · Replies 19 ·
Replies
19

Undergrad Is F in P=F/A an average or a sum of all microscopic forces?

  • Greg777
  • · Replies 1 ·
Replies
1

Graduate Structure of orbits at a tornado, whrilwind, etc.

  • luckis11
  • · Replies 1 ·
Replies
1

Graduate Rayleigh bubble collapse pressure integration derivation

  • bksree
  • · Replies 2 ·
Replies
2

Graduate The Standard Deviation of a Brownian Force

  • abelthayil
  • · Replies 1 ·
Replies
1

Undergrad Are waves always the sum of sine waves?

  • Nick Jackson
  • · Replies 8 ·
Replies
8

Graduate Deriving the formula for sine waves

  • Nick Jackson
  • · Replies 4 ·
Replies
4

High School A little question I want to ask

  • Sundown444
  • · Replies 6 ·
Replies
6

Undergrad Standing Waves and Resonance in Fixed-End Transverse String Vibration

  • ofeyrpf
  • · Replies 2 ·
Replies
2

Undergrad Components of standing wave between harmonic frequencies

  • ofeyrpf
  • · Replies 1 ·
Replies
1

Undergrad What is St. Elmo's fire enrgy source?

  • Stanley514
  • · Replies 10 ·
Replies
10

Undergrad Can a wave pass through a slot twice its amplitude wide?

  • britney999
  • · Replies 12 ·
Replies
12

Undergrad What defines density of chemical substances?

  • Stanley514
  • · Replies 4 ·
Replies
4

Graduate Can the Larmor formula explain the stability of electron rotation?

  • MickaelPC
  • · Replies 6 ·
Replies
6

Graduate Reference for Learning About Waves

  • axsvl77
  • · Replies 2 ·
Replies
2

Undergrad What Does Azimuthal Symmetry Mean in Physics?

  • ahmad1992
  • · Replies 2 ·
Replies
2

Graduate Does quality factor of a resonator depend on the excitation signal?

  • shpongle
  • · Replies 1 ·
Replies
1

What would crack easier? An iPhone 6 or an iPad air?

  • Jbeats245
  • · Replies 15 ·
Replies
15

High School Symbols for physics, geometry, calculus ext

  • Simon = Mc2
  • · Replies 6 ·
Replies
6

High School Physics Experiments to Do at Home

  • Simon = Mc2
  • · Replies 2 ·
Replies
2

Undergrad Suggestions on research paper on artificial satellites

  • Crutchlow13
  • · Replies 6 ·
Replies
6

High School How Fans Move Air: Propeller vs. Blade Shape

  • bnvbnv
  • · Replies 5 ·
Replies
5

Graduate How do macroscopic brownian ratchets extract energy from random vibrations?

  • parsec
  • · Replies 18 ·
Replies
18

Undergrad How is an emission spectrum measured and does it vary with time?

  • rwooduk
  • · Replies 6 ·
Replies
6

Undergrad Understanding Standing Waves and their Velocity on a String

  • jlyu002@ucr.e
  • · Replies 15 ·
Replies
15

High School Gravity flow rate through a tube from pressure difference

  • Ruckus
  • · Replies 7 ·
Replies
7

Graduate How to Fourier transform this expression?

  • Steve Drake
  • · Replies 1 ·
Replies
1

Graduate Measuring Viscosity of Materials with Dynamic Modulus

  • gkiverm
  • · Replies 3 ·
Replies
3

High School Teaching Error in Measurement Lab

  • CSOleson
  • · Replies 2 ·
Replies
2

Graduate 2D Harmonic Oscillator example

  • fog37
  • · Replies 13 ·
Replies
13

High School Why does air release differently from a slightly open versus a wide open mouth?

  • kartikwat
  • · Replies 7 ·
Replies
7

Graduate How Is Reynolds Stress Calculated from RANS Equations?

  • member 428835
  • · Replies 3 ·
Replies
3

High School Experimenting with CD: Making Bubbles with Physics

  • Oomph!
  • · Replies 1 ·
Replies
1

Undergrad Does Young's Modulus Vary with Changes in Size?

  • gkiverm
  • · Replies 5 ·
Replies
5

Graduate Aether Experiments: What's Your Take?

  • user1
  • · Replies 5 ·
Replies
5

Undergrad Difference between wavenumber and wave mode?

  • sawer
  • · Replies 10 ·
Replies
10

High School Progressive Wave Nodes: Why Don't They Exist?

  • desmond iking
  • · Replies 1 ·
Replies
1

Undergrad Can I equate a variation δA with the differential dA?

  • ChrisVer
  • · Replies 4 ·
Replies
4

Graduate What are free energy flows in multiphase fluid dynamics?

  • Shishir_93
  • · Replies 1 ·
Replies
1

Graduate Capillary meniscus height in coaxial tubes and with beads

  • Alfred1
  • · Replies 2 ·
Replies
2

Undergrad Why does diffusion happen at the molecular level?

  • Oomph!
  • · Replies 1 ·
Replies
1

Undergrad Why does less dense liquid float above more dense liquid?

  • Oomph!
  • · Replies 8 ·
Replies
8

High School Why Does Pepper Move to the Edge of the Plate in the Soap Experiment?

  • Oomph!
  • · Replies 1 ·
Replies
1

Graduate The formula pV=1/3Nm(c_rms)^2 in non cuboids

  • GeneralOJB
  • · Replies 2 ·
Replies
2

High School Why Does Water Rise in Empty Glass When Using a Paper Towel?

  • Oomph!
  • · Replies 1 ·
Replies
1

Undergrad Transformation Y-Δ with matrix?

  • Jhenrique
  • · Replies 1 ·
Replies
1

Graduate Can someone explain these equations?

  • pierce15
  • · Replies 4 ·
Replies
4

Undergrad Oscillator driving frequencies

  • Saado
  • · Replies 3 ·
Replies
3

Improving Cooling Efficiency: Two Effective Strategies

  • arash karimi
  • · Replies 2 ·
Replies
2

Undergrad How do glucose meters measure blood sugar levels?

  • Nerdydude101
  • · Replies 1 ·
Replies
1

Graduate When to use e^i(-kx+ωt) versus e^i(kx-ωt) for waves?

  • 122520253025
  • · Replies 6 ·
Replies
6

Passive flapping butterfly garden ornament?

  • Stephen Tashi
  • · Replies 2 ·
Replies
2

Undergrad Why cylindrical coordinates need three unit vectors

  • PsychonautQQ
  • · Replies 1 ·
Replies
1

High School Difference between physical property and physical quantity?

  • christian0710
  • · Replies 3 ·
Replies
3

Graduate How to compute the energy of scalar wave equation

  • xortdsc
  • · Replies 12 ·
Replies
12

Undergrad When to use gradient and when to use only one coordinate

  • FaroukYasser
  • · Replies 2 ·
Replies
2

Graduate Orienational order parameter in isotropic systems

  • Liam79
  • · Replies 1 ·
Replies
1

Undergrad Explain Poiseuille's Law - Learn Quickly

  • SarcasticBunny
  • · Replies 4 ·
Replies
4

Graduate How Can We Design a Solar Drone with Long Duration Flight and High Payload?

  • yuiop
  • · Replies 5 ·
Replies
5

Graduate Where can I find the derivation of the Group Velocity formula?

  • PsychonautQQ
  • · Replies 1 ·
Replies
1

Undergrad Maximizing Power Output with Piezoelements: A Comprehensive Guide

  • Coldy
  • · Replies 2 ·
Replies
2

Undergrad Doppler effect, source and receiver in different media

  • nikolafmf
  • · Replies 2 ·
Replies
2

What is program used in ray tracing simulation?

  • einstein1921
  • · Replies 2 ·
Replies
2

Graduate Diffusion: Concentration profile for point sink in infinite plane

  • anvoice
  • · Replies 5 ·
Replies
5

Undergrad Would wind tubine on moving automobile pomote inlet efficiency?

  • kandyho
  • · Replies 6 ·
Replies
6