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 Using "symmetry" to deduce final velocities of two colliding particles

Optics

Undergrad Higher magnification calibration slide

Thermodynamics

Graduate Why is 0 K unattainable?

Electromagnetism

Undergrad Small question about constantly accelerating charges
High School Why Do Poached Eggs Stay In The Center?
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High School Is the Longer Path Quicker in Physics?
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Undergrad Sound power, amplitude, frequency, and decibels
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Undergrad For fun: How fast would an open-front CRT kill an average human? [A?]
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Can a mathematician solve high school physics tasks without physics knowledge?
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High School Log relationship between thickness of material and sound absorbed?
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Undergrad Why singing a note while playing a note creates a difference frequency
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High School Conversion of Potential Energy: Sound or Heat?
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High School Speed of sound in steel at different temperatures?
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High School Why does a plasma ball emit light?
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Undergrad Understanding Ultrasound Attenuation and Reflection in Aluminum Sheets
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High School What is the difference between standing wave and resonance?
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Undergrad What happens if you connect the ocean floor and the surface with a pipe?
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Undergrad How Can I Create a Flavored Coating for Ice Spheres in Cocktails?
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Undergrad Is nonlinear acoustics in mainstream physics?
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Undergrad Uncertainties accumulate when measuring longer lengths?
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Undergrad Reported uncertainties for time and distance in physics experiment
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High School How to statistically calculate the final value?
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Undergrad How does a free surface flow cause non-linearity?
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Undergrad Can Ultrasound Be Used to Penetrate Through Air and Bone?
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Undergrad Understanding Ultrasound Blocking: Effects on Energy, Reflection, and Absorption
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High School Non-Sinusoidal Standing Waves Existence?
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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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