Join expert classical physics discussion on the principles developed before the rise of relativity and quantum mechanics. Including mechanics, electrodynamics, thermodynamics, optics.
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Undergrad Compare Bending Resistance of Dimension Lumber used as Joist
- PAUL GRAHAM
- · Replies 15 ·
Undergrad "Is Kirchoff really for the birds?"
- Muu9
- · Replies 15 ·
High School Why the bottom of a rolling wheel has zero velocity
- BadgerBadger92
- · Replies 20 ·
High School Deriving the "third" kinematic equation using graphs
- brotherbobby
- · Replies 23 ·
Graduate Analysis of a rare die landing/balancing on a checker
- Gazzetta1992
- · Replies 7 ·
Undergrad Are the basic axioms of thermodynamics demonstrated experimentally?
- drzbigniew31
- · Replies 14 ·
Undergrad Heat radiation in vacuum
- ravindrar
- · Replies 28 ·
High School When light is polarized with itself
- Vectronix
- · Replies 6 ·
Undergrad Getting back Maxwell's vector equations from their spinor version
- grzz
- · Replies 6 ·
Undergrad What happens to a person's body in space without a spacesuit?
- Pelf41
- · Replies 25 ·
Undergrad Is Water's Volume Expansion Upon Freezing an Intrinsic Property?
- swissgirl1999 Refer
- · Replies 60 ·
Undergrad Sound waves on the Sun
- sevensages
- · Replies 11 ·
Undergrad Ampère's mercury experiment and Aharonov-Bohm: same message?
- Roberto Pavani
- · Replies 15 ·
Undergrad Why is water pressure increased in a plastic bag in a bucket?
- ImaginaryTango
- · Replies 75 ·
Undergrad Our Mathematical Universe book -- Since when does light contain voltage?
- sevensages
- · Replies 23 ·
High School Tennis Balls in the Ocean
- some bloke
- · Replies 24 ·
Undergrad Precision Microwave-Background Fluctuations
- sevensages
- · Replies 8 ·
High School Current through body touching high tension wire
- DaveC426913
- · Replies 5 ·
Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?
- Roberto Pavani
- · Replies 28 ·
Undergrad Textbook description of R##\ddot{\text o}##mer's light speed calculation
- brotherbobby
- · Replies 27 ·
High School Why would sailboat racers prefer a full keel over a fin keel?
- DaveC426913
- · Replies 39 ·
Undergrad Optimal landing ramp profile for downhill bike drops
- erobz
- · Replies 37 ·
Undergrad Do vocal tract resonances assist a singer's pitch control?
- Swamp Thing
- · Replies 14 ·
Undergrad Capacitor Voltages at t = 0: Zero or Split?
- danadak
- · Replies 41 ·
Undergrad The stream from the bottom of the bottle becomes short when the bottle is filled from above
- Mihal
- · Replies 7 ·
High School Maximum slope angle before a horse flips over going uphill
- Vasi
- · Replies 15 ·
Undergrad Mach's principle vs two counter-rotating buckets
- Roberto Pavani
- · Replies 24 ·
High School What fun could you have with a fountain design in artificial gravity?
- DaveC426913
- · Replies 44 ·
High School Why does this not produce water pressure?
- questions8938
- · Replies 9 ·
High School Propagation of Thunder
- Hornbein
- · Replies 9 ·
Undergrad How water ripples behave at boundaries and in different conditions
- help me pls 123
- · Replies 6 ·
High School Uniform thermal expansion of metals
- DaveC426913
- · Replies 24 ·
High School In 2g, would jumping be harder?
- DaveC426913
- · Replies 8 ·
Undergrad First law of this universe
- Anti10188
- · Replies 32 ·
Undergrad How many carriers for phased array?
- Esquilo
- · Replies 45 ·
High School How can one relate jerk and force?
- Dark85
- · Replies 5 ·
Graduate Does a moving particle count as a wave?
- far far away
- · Replies 47 ·
Undergrad Coriolis acceleration plane perpendicular to Omega
- brotherbobby
- · Replies 12 ·
Graduate How is literally EVERYTHING in physics not binary?
- iWonderMan
- · Replies 8 ·
Undergrad What is the proof of the Σqᵢcosθᵢ = constant theorem for colinear charges?
- Ajinkya78910
- · Replies 1 ·
Graduate Linearization of the Navier–Stokes equations for real airflow conditions
- Pharal
- · Replies 1 ·
High School Rubber band: More or less force to stretch at the beginning?
- MilleySill
- · Replies 8 ·
Undergrad Capturing and storing electrical energy from lightning strikes
- couperusfred
- · Replies 14 ·
Undergrad Different result with kinetic energy and momentum when a bullet hits a target
- BWR
- · Replies 29 ·
Undergrad Measured Spectrum of Stopped Wood Organ Pipe Shows ALL Overtones
- greypilgrim
- · Replies 30 ·
Undergrad Pumping liquid around and draining a part of it, how much is lost?
- Ito
- · Replies 3 ·
High School An apparent contradiction between Fleming's rules
- brotherbobby
- · Replies 16 ·
High School Is it safe to fly in a spinning hollow asteroid?
- DaveC426913
- · Replies 39 ·
Undergrad Velocity of a free particle using Landau's approach
- Rick16
- · Replies 20 ·
Undergrad Optimal pipe slope for drainage without freezing damage
- pvshackguy
- · Replies 13 ·
High School Bubbles in Space
- sqljunkey
- · Replies 2 ·
Undergrad Potential energy of a system of particles
- Rick16
- · Replies 7 ·
High School The world is not enough
- red_ed
- · Replies 37 ·
Undergrad Extreme Negative Polarization (peer reviewed Astrophysical Journal)
- Julian_M
- · Replies 15 ·
Undergrad Why is thermal energy treated differently than other kinds of energy?
- nataliaeggers
- · Replies 30 ·
High School Internal energy and gravitation
- hokhani
- · Replies 14 ·
Graduate How can a 1 kilometer body (3i/Atlas) flip 180 degrees suddenly?
- Julian_M
- · Replies 9 ·
Undergrad The missing 3D magnetism theory
- nataliaeggers
- · Replies 6 ·
Graduate How to compute the path 3i/Atlas will take when it passes near Jupiter?
- Julian_M
- · Replies 8 ·
Undergrad Is a half submerged object submerged in its own displaced water?
- lost captain
- · Replies 22 ·
Undergrad Problems with Blum's Karate Article
- makamo66
- · Replies 3 ·
Undergrad What does negative pressure mean in ultrasound waves
- DaveE
- · Replies 6 ·
High School How much lower would a sheep be expected to jump if on a steep upward slope?
- questions8938
- · Replies 33 ·
High School Fan is pushing in the front and sucking from the back
- johnthekid
- · Replies 32 ·
High School Automobile Does Front Flip
- Hornbein
- · Replies 3 ·
Undergrad What is the pressure of trapped air inside this tube?
- lost captain
- · Replies 19 ·
Graduate Static Electricity foam balls
- ron351
- · Replies 4 ·
High School Which technique has been used? (drowning victim recovery in a lake)
- fresh_42
- · Replies 20 ·
Undergrad What areas of maths and physics do I need to understand explosion physics?
- Ax_xiom
- · Replies 46 ·
Undergrad Confusion about derivation of equation in Gregory
- terahertz
- · Replies 5 ·
High School 'splain this hydrostatic paradox in tiny words
- DaveC426913
- · Replies 9 ·
Undergrad Explain Bernoulli at the molecular level?
- user079622
- · Replies 252 ·
Graduate Advice for 100 MHz resonator
- BillKet
- · Replies 11 ·
High School What qualities does time have other than linearity, motion, and speed?
- atlanticus
- · Replies 8 ·
High School Ultrasonic wave and regular sound wave
- Hesh123
- · Replies 4 ·
High School Use Surface-Volume to approximate gravity for planets and protons
- Owe Kristiansen
- · Replies 6 ·
Undergrad What does the Lattice Boltzmann Equation actually say?
- Swamp Thing
- · Replies 8 ·
High School Slow Motion Appearance of Flags: Fluid Dynamics or Perceptual Illusion?
- metehansure
- · Replies 7 ·
High School Symbol for temperature on the Fahrenheit scale
- DrDu
- · Replies 13 ·
Undergrad Reflection of 1D longitudinal waves at open pipe ends
- greypilgrim
- · Replies 11 ·
High School How Did Scientists Develop and Validate the Atomic Model?
- Itry
- · Replies 1 ·
Undergrad Focusing sound waves from the environment
- gensahilsingh
- · Replies 6 ·
High School Conservation of energy demo -- An upgrade to the standard version
- DaveE
- · Replies 4 ·
High School Why do things burn up in the atmosphere but not in the ocean?
- Feynstein100
- · Replies 14 ·
Undergrad A Mathematica code to plot two functions on the same screen
- hagopbul
- · Replies 5 ·
Undergrad Ultrasonic transducer horn and back mass design at 50 kHz
- MRoydev
- · Replies 2 ·
Undergrad Why do standing wave demonstrations approach ideal behavior despite wave losses?
- greypilgrim
- · Replies 16 ·
Undergrad Pulse bouncing off ends of a tube, expressed as sum of sine modes?
- Swamp Thing
- · Replies 15 ·
High School Power from global loop power cable ?
- synch
- · Replies 1 ·
Undergrad Bouncing sound pulse in cylinder, driving vibrations in shell
- Swamp Thing
- · Replies 1 ·
Undergrad Integrating a piecewise function with absolute values
- Kalarudra
- · Replies 13 ·
Undergrad Which radiation between infrared and microwave is more penetrating?
- Cosma
- · Replies 11 ·
Undergrad Frequency components that remain fixed when singing a scale
- Swamp Thing
- · Replies 18 ·
High School What is the speed of "motion"?
- BFEENEY
- · Replies 14 ·
Undergrad Water column object insertion and energy recapture
- HOTTUBTHOMPSON25
- · Replies 15 ·
Graduate Hamiltonian formulation of classical mechanics as symplectic manifold
- cianfa72
- · Replies 5 ·
Undergrad Singing Crystal Wineglass -- Does the wine mass determine the pitch?
- Twodogs
- · Replies 22 ·
Undergrad Why is the Cross Product Used in Mathematics? Understanding its Role and History
- Trying2Learn
- · Replies 21 ·
Undergrad Wave motion and a stretched string
- mondo
- · Replies 3 ·
High School Simulate an altitude at 16000-18000 feet with water depth
- Rev. Cheeseman
- · Replies 29 ·