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

A cool collection of classical mechanics problems

Optics

Undergrad Pentaprism with magnification, which surface is curved?

Thermodynamics

Undergrad Joule-Thomson Expansion

Electromagnetism

Graduate Horizontal component of the electric field of an infinite uniformly charged plane
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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High School Photo of crosswalk lines distorted by tires action-reaction
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High School Length is the measure of intervals in space?
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High School How to Linearize an R vs θ graph (distance vs angle)
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High School What is the wave intensity formula for sound?
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Undergrad What is the integral of energy?
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High School Can physics deal with the existence of Pi?
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High School Node Placement in Stationary Waves on Pool Surfaces
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High School Help with IB Extended Essay Physics Experiment Ideas
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Undergrad Error analysis: simple but confusing matter
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Undergrad Why does energy travel in waves?
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High School Why does my head feel heavy when I go out on a cold weather day?
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High School What is the RMS value in this context?
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Undergrad Coexistence of Solid and Liquid Matter: Conditions for Existing One Phase?
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Undergrad Air density with a significantly higher sea level
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High School Why is squaring used in physics equations?
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High School What is the difference between "Unitless" and "Dimensionless"?
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High School Is energy considered to be physical?
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Insights Intro to Physically Reasonable Waves on a String
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High School Help understanding the physics of airflow
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High School Upside down buoyancy (Have you seen this?)
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976
High School Dangers with a diving bell combined with a long snorkel
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Undergrad Liquid soap pulsing as it's drawn into a syringe
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Undergrad What are the applications of dimensional analysis and why does it work?
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Undergrad Vibrations of waves with pinned vs free boundary conditions
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Graduate How to get the second line of this equation from the first one?
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High School Non-linear Behavior, Chaos to Order
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Graduate What is the difference between aggregation, nucleation and growth?
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High School Dropsheet-duct tape wall in The Martian
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Undergrad Child's experiment to weigh air
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Undergrad Are there waves that go up and down without going below zero displacement?
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Undergrad New insights in penguin physics
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Undergrad A real life problem with plumbing at my house
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High School Can Vibranium Realistically Be Used in Hyperloop Construction?
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High School Measurement and Uncertainities
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Undergrad The total energy stored in a battery (theory/formula)
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Undergrad Why volume is conserved but not the surface area?
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High School Exponential formula for Excel sheet
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High School How to calculate the amplification of a cone
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Graduate Through the eyes of a being that can see two in dimensions
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Undergrad Blowing Bubbles in Space: Can You Create a Giant Bubble in the Vacuum of Space?
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Graduate Where Can I Submit a 15-Page Article on Educational Largangian Mechanics?
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High School Animation of a standing wave formed by components from a free end
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Undergrad Solve the Mystery of the Alarm Signal: Duncan's Story
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Undergrad Solve Mystery Equation - Get Insight into Relevance & Contents of Brackets
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Undergrad Difficult Series Battery Problem
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High School How is frost possible at 39 degrees F?
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Graduate Molecules Aggregating on a Surface that includes a Scratch
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Graduate What is meant by ##\rho_{xx}##?
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High School Would a Dyson sphere need a "relief valve?"
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Graduate Amplitude of a stationary wave
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High School Why are there no bubbles in a pipette when pressure is released?
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Undergrad Division of a physical quantity
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Undergrad Berkeley Physics Course- vol 3
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High School Why does coffee in a glass leaves its signatory on the surface?
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Undergrad Solving the Paradox: A Dynamical Model of Disease Spread
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High School Does a rubber mat on a device prevent static build up
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Undergrad Cavity resonances between two long parallel plates
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Undergrad Standing Waves vs Traveling Waves
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Undergrad Writing about a simple physics lab
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Undergrad Nanoantennae calculation for covid-19
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High School Diffusion behavior of particulates
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High School What Interesting Topics Can Be Explored with Dew Points and Relative Humidities?
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Graduate Help with Math: 2.28-2.29 to 2.31-2.34
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Undergrad How can I understand valence bond theory and VSEPR theory?
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Undergrad Why does the arrangement of the Periodic Table make no sense?
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Graduate What are the most important open questions in classical physics?
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High School Another doubt I had while reading Feynman Lectures
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High School Does a vernier caliper have doubtful figures?
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Undergrad Why Do Fractions Like 2/3 and 3/2 Frequently Appear in Physics Problems?
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Undergrad Derivatives of Energy: 2nd Time Rate of Change, Useless in Physics?
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Undergrad Removing moisture from polyester staples
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High School Calculus for Beginners: Basics & Examples
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High School Hydraulic resistor as a constriction in a pipe
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High School Why does Sunset look different from Sunrise?
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Undergrad Reynolds Number in Organism-Fluid Interactions
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Undergrad Why do Bubbles oscillate sinusoidally?
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High School How is a Scientific law/theory's accuracy tested?
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Undergrad EV per Torr*cm -- What does it mean?
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High School Reading a Book about Air Sustained Structures....
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High School 100sqft wormhole from sea level to outer space?
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High School I have a basic question about energy :)
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High School Blocking all type of energies/waves/signals
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Undergrad Question about Waves -- What does "Elongation" refer to?
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Undergrad Resonance gets sharper just by increasing the resonance freq, why?
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High School Why are Biological Materials easily broken despite being very strong?
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High School Can Smaller Chequers Change the Color of a Spinning Red and Green Pattern?
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Undergrad Using the ni Formula from a Paper with N=7: What do I Get?
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High School Change in field strength if two variables are incremented at the same time
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High School Raindrops Cracking Windshields
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