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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High School How is frost possible at 39 degrees F?
- gary350
- · Replies 26 ·
Graduate Molecules Aggregating on a Surface that includes a Scratch
- Sciencestd
- · Replies 3 ·
Graduate What is meant by ##\rho_{xx}##?
- aliens123
- · Replies 11 ·
High School Would a Dyson sphere need a "relief valve?"
- zuz
- · Replies 4 ·
Graduate Amplitude of a stationary wave
- Josielle Abdilla
- · Replies 3 ·
High School Why are there no bubbles in a pipette when pressure is released?
- fresh_42
- · Replies 1 ·
Undergrad Division of a physical quantity
- akashpandey
- · Replies 5 ·
Undergrad Berkeley Physics Course- vol 3
- peace
- · Replies 1 ·
High School Why does coffee in a glass leaves its signatory on the surface?
- Zohar
- · Replies 5 ·
Undergrad Why does an epidemic model allow linear growth when R0 > 1?
- greswd
- · Replies 26 ·
High School Does a rubber mat on a device prevent static build up
- lee123456789
- · Replies 3 ·
Undergrad Cavity resonances between two long parallel plates
- nawidgc
- · Replies 9 ·
Undergrad Standing Waves vs Traveling Waves
- sayetsu
- · Replies 9 ·
Undergrad Writing about a simple physics lab
- sayetsu
- · Replies 3 ·
Undergrad Nanoantennae calculation for covid-19
- qnach
- · Replies 3 ·
High School Diffusion behavior of particulates
- chirhone
- · Replies 7 ·
High School Research topics for dew point and relative humidity measurements
- NewtonIsWrong
- · Replies 3 ·
Graduate Deriving equations 2.31-2.34 from 2.28-2.29
- daisy496
- · Replies 5 ·
Undergrad How can I understand valence bond theory and VSEPR theory?
- Frigus
- · Replies 4 ·
Undergrad Why does the arrangement of the Periodic Table make no sense?
- Bonkus Klunkit
- · Replies 2 ·
Graduate What are the most important open questions in classical physics?
- andresB
- · Replies 6 ·
High School Does Feynman mean the 3D space is what everything moves in?
- Rishabh Narula
- · Replies 1 ·
High School Does a vernier caliper have doubtful figures?
- Yoseph Santoso
- · Replies 24 ·
Undergrad Why Do Fractions Like 2/3 and 3/2 Frequently Appear in Physics Problems?
- FallenApple
- · Replies 9 ·
Undergrad Derivatives of Energy: 2nd Time Rate of Change, Useless in Physics?
- dsaun777
- · Replies 4 ·
Undergrad Removing moisture from polyester staples
- ravindrar
- · Replies 4 ·
High School Calculus basics for beginners
- Frigus
- · Replies 7 ·
High School Hydraulic resistor as a constriction in a pipe
- etotheipi
- · Replies 4 ·
High School Why does Sunset look different from Sunrise?
- gary350
- · Replies 23 ·
Undergrad Reynolds Number in Organism-Fluid Interactions
- vetenar
- · Replies 4 ·
Undergrad Why do Bubbles oscillate sinusoidally?
- Trying2Learn
- · Replies 3 ·
High School How are scientific laws tested against infinite instances?
- LittleRookie
- · Replies 16 ·
Undergrad EV per Torr*cm -- What does it mean?
- DariusP
- · Replies 3 ·
High School Why does internal pressure rise in air-supported structures during wind and snow?
- AlexVille
- · Replies 3 ·
High School 100sqft wormhole from sea level to outer space?
- shintashi
- · Replies 6 ·
High School Can friction generate gamma radiation
- Khal N
- · Replies 27 ·
High School Blocking all type of energies/waves/signals
- oror
- · Replies 1 ·
Undergrad What does elongation mean in wave notation g(x,t)
- math04
- · Replies 3 ·
Undergrad Resonance gets sharper just by increasing the resonance freq, why?
- Aaron121
- · Replies 5 ·
High School Why are Biological Materials easily broken despite being very strong?
- TheShermanTanker
- · Replies 1 ·
High School Can Smaller Chequers Change the Color of a Spinning Red and Green Pattern?
- cmb
- · Replies 14 ·
Undergrad Using the ni Formula from a Paper with N=7: What do I Get?
- rabbed
- · Replies 2 ·
High School Change in field strength if two variables are incremented at the same time
- etotheipi
- · Replies 7 ·
High School Raindrops Cracking Windshields
- jedishrfu
- · Replies 4 ·
High School Where Does Energy Go in Young's Double Slit Experiment?
- Admiralibr123
- · Replies 12 ·
Graduate How Do Van Der Waals Forces Influence Adhesion in Glue and Gecko Setae?
- siddharth5129
- · Replies 2 ·
Undergrad How can we quickly locate an avalanche victim using technical tools?
- hagopbul
- · Replies 25 ·
High School Stratified Flows: Definition and Physical Meaning
- math04
- · Replies 2 ·
Undergrad Why does the wave equation describe simple harmonic motion?
- math04
- · Replies 1 ·
Graduate Synchronization from dissipation?
- Demystifier
- · Replies 2 ·
Undergrad Why do bubbles coalesce in liquids?
- chef
- · Replies 9 ·
High School What are the general calculus concepts used in classical physics?
- DeltaForce
- · Replies 3 ·
High School How to tell if a quantity is defined as a derivative or a ratio
- etotheipi
- · Replies 4 ·
High School How does color X-ray imaging compare to MRI for medical and security applications?
- artis
- · Replies 12 ·
Undergrad Need advice on vacuum / suction experiment
- Blackie
- · Replies 7 ·
High School Calibrating measurements from scratch
- atracious
- · Replies 6 ·
High School What is the definition of angle?
- Coder Hashtag
- · Replies 5 ·
Graduate Signal Processing and the Duffing ODE
- member 428835
- · Replies 5 ·
High School Gaining Perspective on Valid Digits in Physics Problems
- johann1301h
- · Replies 6 ·
Undergrad What distinguishes pressure from normal stress in bird transport phenomena?
- Est120
- · Replies 1 ·
High School What is the meaning of the word "resolved"?
- Haorong Wu
- · Replies 6 ·
Undergrad Difference between stationary and steady state
- Richard Parker
- · Replies 8 ·
Undergrad Why a massive body is easier to break than a tiny body?
- fxdung
- · Replies 5 ·
High School Shifting of a Cosine Curve with negative phase angle values
- warhammer
- · Replies 9 ·
Undergrad In what cases does dimensional analysis fail?
- VVS2000
- · Replies 29 ·
High School What exactly is Dimensional Analysis?
- DeltaForce
- · Replies 2 ·
High School What does the unit m³/kg·s² mean for the gravitational constant?
- Mohamad
- · Replies 1 ·
High School Doppler effect with moving source and stationary observer
- frostysh
- · Replies 64 ·
High School Calculating mono filler depth for spinning reel with braid
- member 534986
- · Replies 8 ·
Undergrad What is the connection between holograms and the implicate order?
- lucas_
- · Replies 19 ·
Insights Basics of dimensional analysis
- Orodruin
- · Replies 7 ·
Undergrad What is the correct phrasing for matrix Bellman nonhomogeneous equations?
- nomadreid
- · Replies 5 ·
Undergrad Calculating Energy and Q of a Vibrating String
- starbaj12
- · Replies 1 ·
High School Getting a newspaper page to stick to a wall using wooden pencil
- johann1301h
- · Replies 9 ·
High School Does warm air rise or does cold air sink?
- somega
- · Replies 6 ·
Undergrad The fast Fourier transform and droplet frequencies
- member 428835
- · Replies 13 ·
High School A magic number or only a number?
- Ssnow
- · Replies 2 ·
Undergrad Thread attempt 2: Edge physics trying to understand
- paradisePhysicist
- · Replies 43 ·
Graduate What Defines Waves as Resonant Generated?
- math04
- · Replies 1 ·
Undergrad Chain rule when x is a function of ξ and η in d'Alembert's solution
- bksree
- · Replies 4 ·
High School Why doesn't the ink in a pen refill flow back if I hold it inverted?
- Benjamin_harsh
- · Replies 4 ·
Undergrad D'Alembert's solution to the wave equation
- bksree
- · Replies 5 ·
Undergrad Understanding Waves: The Importance of Fourier Analysis in Undergraduate Physics
- kent davidge
- · Replies 3 ·
High School Can He be used as a safer alternative to H in blimps?
- DaveC426913
- · Replies 24 ·
Undergrad Optimal Copper Pipe Size for Misting System
- ljmorlock
- · Replies 1 ·
Undergrad Would an unstable emulsion separate in the abscense of gravity? How?
- thermodragon
- · Replies 4 ·
Undergrad Why do positive gravity anomalies increase sea level?
- Jaams
- · Replies 7 ·
High School Can color be used for measuring density?
- Isolde Wilde
- · Replies 11 ·
Undergrad High resolution visible spectrum
- Teck
- · Replies 27 ·
Undergrad Predicting espresso portafilter hole size from acoustic resonance
- JT Smith
- · Replies 8 ·
Graduate Which liquids do not supercool?
- thermodragon
- · Replies 2 ·
Graduate Is there a passive molecular flow 'diode'?
- cmb
- · Replies 2 ·
Undergrad Phase shift at resonance in a driven harmonic oscillator
- APUGYael
- · Replies 7 ·
Undergrad How is Peter Debye's name pronounced?
- cmb
- · Replies 2 ·
Undergrad Deriving Laplace's law for spherical pressure vessels
- gkiverm123
- · Replies 1 ·
Undergrad How do you exactly calculate the theoretical maximum efficiency of an LED?
- HomeExperiement
- · Replies 4 ·
Graduate Calculating Flow of Helium in a Verticle Pipe
- Q_Goest
- · Replies 1 ·
Graduate Finding a comprehensive transform tables reference
- krindik
- · Replies 1 ·
Graduate Combining advective transport equations by quotient rule for concentration ratio
- nikokampman
- · Replies 1 ·
Undergrad Joukowsky Equation: Applies to Gases Too?
- lambdaLoverD
- · Replies 1 ·