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

High School Pumping water upwards into a large water tank

Optics

High School Volumetric Holographic Displays

Thermodynamics

Peltier thermopar for hand heat charging battery

Electromagnetism

High School Electric Fields inside Conductors & Gauss' Law
Undergrad Interesting sound-making hydrogen-burning device
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Undergrad How is this the same as this? (two kinds of waves)
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Undergrad The physics behind mixing coloured pigments (questions inside post)
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High School How are fractures in airplane structures detected by ultrasound?
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Undergrad What power rating do UV-A Tubes have? (tanning salons)
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High School Explaining Variations of Free-Fall Gravity on Earth?
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Undergrad Error on a weighing scale due to wrong size
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High School Units of S/N ratio in some papers
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High School Some questions about humidity and storing DVDs in a closed cardboard box
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Undergrad Is the energy destroyed in this experiment?
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High School What is meant by "local melting"?
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Undergrad Understanding the propagation of sound on molecular Scale
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High School The SpaceX Launch and Aftermath
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High School Water surface behavior under pressure change
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Undergrad Understanding Vectors: Magnitude & Direction
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High School Should I use True North or Magnetic North to align my sundial?
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High School How does the density of air affect the note you hear?
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Undergrad Neil DeGrasse Tyson on "sharing water" with historical figures
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High School How long does it take to reach harmful CO2 levels in a room?
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Undergrad Surface area and length (percent increase relationship)
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Graduate Conservation Laws from Continuity Equations in Fluid Flow
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Undergrad At what level will the water settle in this system?
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Undergrad Measuring Low Resistance: Why Meter Bridge is the Preferred Choice
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Undergrad Pickleball Physics -- Player reaction time vs aging
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Undergrad What is the benefit of measuring both direct and reverse current?
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High School Negative pressure in a car to power it
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High School Air tank PSI and cubic feet calculation help please
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Undergrad Equations for Spherical Resonators
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High School How Do Oscillations and Particles Interact in Electromagnetic Fields?
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High School Hydrodynamics Effects: Are They the Same?
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Undergrad Don't Ever Mention "Centrifugal Force" to Physicists
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Undergrad What is the best way to shield / jam ultrasound?
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Undergrad Relationship between the Different Frequency vs Decibel Graph Peaks
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High School Atmospheric pressure, vacuum, etc.
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Undergrad The effect of temperature on the damping of a guitar string
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Graduate Helmholtz Resonator: attenuation vs. amplification
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High School Why is there so much multplication in physics?
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High School Question about a vacuum ejector (vacuum pump using the Venturi effect)
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High School Energy needed to stop the Earth's inner core ---and its effects?
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High School Knudsen Flow: High School Student Q&A
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High School How to calculate measurement error by using other quantities?
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Graduate Hydrodynamic stability- Rayleigh equation - Couette flow
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Graduate Is Orbital Velocity the Same as RMS of Eddy Velocities in Turbulent Flow?
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Graduate How Does Anisotropy Affect the Calculation of Taylor Microscale in Turbulence?
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Graduate Equations of State in Modern Classical Physics (Thorne/Blandford)
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High School How to describe complicated dimensions?
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High School Units in exponentials and logarithms
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Undergrad How is the damping of sound (over distance) affected by air properties?
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High School Question about a physical entity (dimensional analysis)
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Undergrad Method for experimental results analysis
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High School If I double sound on my PC, how would the sound intensity increase?
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High School How to calculate a random measurement error?
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Undergrad Why is there no frost below a certain temperature?
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Undergrad Why is length considered a fundamental (base) quantity?
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High School How does a bathtub/shower diverter valve work?
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High School Causation: substance or event?
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Undergrad Question about Waves -- "frequency" versus "angular frequency"
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Undergrad I'm confused on which equation gives percentage uncertainty
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Undergrad About Bernoulli's equation for fluid flow
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High School Understanding the Doppler Effect at an Angle
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Undergrad I found 2 formulas about surface tension -- which one is correct?
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High School Question about inductive and deductive arguments in science
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High School Rice Field Bubbles: Gotcha! Why?
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Undergrad Question about elasticity to help my understanding
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Undergrad Brownian motion of charged particles?
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Graduate How Can Skeletal Models and Physics Help Us Understand Pain Perception?
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Undergrad What Causes the Initial Acceleration Phase in Molecular Behavior?
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High School Why doesn't helium have any effect on the sound of my voice?
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High School How and why can multiplication combine physical quantities?
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Undergrad Number of Sig Figures and Precision
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Undergrad Can Magnets Provide Infinite Energy for Weight Training?
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Undergrad Understanding Sound Waves in Fluids: Pressure and Velocity Fields
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Undergrad Electromagnetic effects in the brain
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Undergrad Does gravitational energy travel like electrical energy?
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Undergrad Does dividing maximum frequency by sound frequency give accurate velocity?
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Undergrad What is the Order of Integration in a Double Integral?
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High School Swimming at the Same Reynolds Number as Sperm: A Reflection on Purcell's Talk
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Graduate Why do we assume harmonic time dependence in wave equation solutions?
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High School A flip of the Earth on its axis
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Undergrad Which units is this conversion factor for (molar volume)? 0.023901488
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Undergrad Formula for Doppler effect in moving medium?
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Undergrad Gas molecular attraction in the sense of Newton's law
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High School Why is sea surface water relatively constant?
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Undergrad Converting Units: How to Convert 1.6*10^7 N/cm^2 to kg/cm^2
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Undergrad Physics behind making a mango milk shake
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Undergrad Question about X-ray power emitted by the Coolidge tube
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High School Artificial gravity rotating on two axes
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Undergrad Does high humidity air transfer sound better than dry air?
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Undergrad When is a water surface not dispersive?
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Undergrad An interesting question from Veritasium on YouTube
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Undergrad Acoustic wave properties and momentum
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Graduate Resonant frequencies of liquid in a cylinder
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Graduate Brownian Motion (Langevin equation) correlation function
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Undergrad Estimating Vertical Wind Speeds: T_a, T_s, & P_a
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Undergrad Shallow Water Wave Equation Simulation: Reverse Shoaling?
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Undergrad How to deal with these +- values in an equation?
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High School Does there exist a metal that is 100% unrustable?
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Undergrad Humming Top Acoustics: Unearthing the Mystery
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Undergrad Surface tension and water (the smallest hole water will flow through)
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Undergrad Sound Frequency & Pipe Wall Thickness
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