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 Possibility of PCB Oils in old Diffusion Pumps?
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High School Fundamental Units and Supplementary Units — What are the differences?
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Undergrad Changing the tone of a wind chime using slits or cuts
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High School Does Gaining Weight Affect Mass?
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Undergrad Can ground albedo near a highway refract noise upward?
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Undergrad Projector location in Cinema Theater
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Undergrad Open channel flow: derive function for energy slope on friction?
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Undergrad Maximizing Compound Bow Power: The Role of Longer Limbs Explained
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Undergrad Uncertainty in measurements of the thickness of a pile of pellets
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High School Is the Definition of a Standing Wave Accurate?
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Undergrad Conversion factors derivation.
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High School Stability of Droplet Climbing on a Needle with Varying Contact Angle
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Graduate Calculating the mechanical index of applied ultrasound
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Undergrad Calculating an increasing angle in Spherical Coordinates for a curve
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Undergrad Can Graphite Sheets Replace Carbon-Loaded Teflon in Millimeter Wave Dosimeters?
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Graduate Betz Law & Submerged Turbines: Is it Applicable?
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Undergrad Geometric Interpretation of Turbulence
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Undergrad General physics question -- How can massless photons have momentum?
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Undergrad Explain how soil is not frozen after 3 weeks of below freezing weather
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Undergrad Second Tonga shockwave - why a drop in the pressure?
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High School A doubt regarding vectors, scalars and their role in physics
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Graduate Is fluid mechanics (aerodynamics) still being discovered?
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Undergrad Equivalent formula for a Sound wave in a medium like an EM wave
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Undergrad Resonant Frequency Formula for a given object
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Graduate Does gravity affect Brownian Motion?
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High School What type of wave is described by y'' = -k*y^2
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High School White noise frequencies and Audio Speakers
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Undergrad Help Designing a Resonance Box for Tuning Forks
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High School Thought experiment (debate with friend)
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Undergrad What Specifications Are Needed for a Plasma Device Power Supply?
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Undergrad What is the orgin of Gauss' law?
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Undergrad Classical particle in a Penning trap
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High School Creep and its effects on a material
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Undergrad What Are the Uncommon Coordinate Systems in Physics Beyond the Basics?
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Undergrad Color Theory - What does blue + yellow make?
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Undergrad What is the role of frequency in music?
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Undergrad How is the popular estimate of the Earth's atmospheric mass correct?
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Undergrad Micro Sound Waves: Can 1 Hear What Only Another Can?
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High School Fundamental Questions about Atoms
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Undergrad Sound and apparent wind -- Any Doppler effect?
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Undergrad Are Newton's Laws of physics compatible with thermodynamics?
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Undergrad How does sound reflect from an interface at an angle?
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Undergrad How Does Surface Tension Balance Small Objects on Water Surface?
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Undergrad Du Nouy Method for Measurement of Surface Tension
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Undergrad Can We See the Moon From 238,900 Miles Away?
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Graduate Free boundary conditions on vibrating rectangular membranes
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Undergrad Escape of Hydrogen from the Earth's Atmosphere
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Undergrad Behavior of a curved 2D sheet and a curved 1D wire under acoustic wave
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Undergrad Phase Speed of Wave in non-relativistic Doppler Shift Derivation
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Undergrad How does the Lota Bowl water experiment work?
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Undergrad Solving for ##\theta## in a Trigonometric Equation
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High School Question about Gravity and my hands
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Undergrad Can Spider Silk Conduct Electricity?
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High School Measuring change in g with height (TV program many years ago)
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High School When do marbles behave like a liquid in a beaker?
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Undergrad If I clap once to a wall, and then walk forward, will I hear an echo?
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High School Question about stress - strain graph and definition of hardness
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Undergrad Are Peak Moment and Peak Torque Equivalents in Biodex Dynamometry Measurements?
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Undergrad Water Waves Over Obstacles: Higher Frequencies Grow, Not Decay
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Undergrad What Keeps Water in a Straw When It's Removed from a Glass?
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Undergrad Fluid Viscosity & Viscous Friction Between Plates
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High School Potential energy in standing wave compared to traveling wave
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Undergrad Does a field affect the originating entity?
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Challenge Experimental Physics Challenge, June 2021
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Undergrad What would it take to eliminate leap years?
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Graduate Why is the sinusoidal considered the fundamental frequency?
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Undergrad Catching Space Debris: Chameleon-Inspired Capture System
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High School Bullet lead with given parameters
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Undergrad The dramatic difference between wet and dry sphere splashes
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Graduate Which equation describes surface waves in a fluid on the same scale?
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Undergrad Amount of Noise extinction in Acrylic glass per thickness in mm
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Undergrad Is physics of living matter an undiscovered territory?
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Undergrad How to ensure an equation is dimensionless when it includes "Debye"
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Undergrad How does a standing wave form?
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Undergrad Graduation of air flow inside a vacuum chamber
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Undergrad Frost on roof window melts in lines
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Undergrad Multiplying Uncertainties in Different Units
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Undergrad Longitudinal waves on a string
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High School Doppler effect in moving medium?
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High School Understanding Vacuum: 15HgV, 25HgV & High Viscosity Fluid
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High School Why doesn't the Earth at the equator experience a sonic boom?
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Graduate Ground Penetrating Radar formula
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High School How to Compile a Report on Experiments: Resources & Tips
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Undergrad The kilogram and Planck’s constant
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High School Defining 1 Second: The History and Science Behind Time Measurement
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High School How Does Phase Change Affect the Equation of a Stationary Wave?
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Graduate Calculating noise of a transducer from molecular vibration
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High School Measuring a change in gravity - thought experiment question
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High School Apparent missing negative phase oscillation energy - where is it?
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Undergrad How to stay warm lost in the wilderness in winter?
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High School Variation of air density with height
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High School Why is Gaussian charge not equivalent to SI charge?
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Undergrad The world from a bat's perspective (sonic images)
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Graduate Dx in an integral vs. differential forms
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Undergrad Where Can I Find Germanium PIN Photodiodes for Sale?
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High School Implicit error margins based on significant figures
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Undergrad Why is it claimed that Betz's limit is a law?
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Undergrad Units of trigonometric functions?
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Graduate Solving Kepler's Equation Over Three Centuries
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Discovering Drum Head Patterns for Music Education
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