Participate in expert physics discussion. Discussion on the nature and properties of matter and energy. This area is for topics that don't fit the other categories. Mainstream physics only.
Threads
High School Why does smoke always rise upwards?
- rohanprabhu
- · Replies 4 ·
Undergrad How Does Pi Relate to Non-Circular Equations?
- Lokhtar
- · Replies 6 ·
Ideas for Rube Goldberg Everyday Objects
- imation
- · Replies 1 ·
High School Formula for trolling lure depth given line length, weight and boat speed
- jdub
- · Replies 6 ·
High School Which notation for large numbers is standard in physics
- ManDay
- · Replies 10 ·
Undergrad Resistors become insulators at some high temp.
- anonymoussome
- · Replies 6 ·
High School Do Dark or Light Colored Clothes Offer More UV Ray Protection?
- muffinman177
- · Replies 1 ·
Solition Wave in Bose Einstein Condensate
- Pythagorean
- · Replies 1 ·
Undergrad Is The Road to Reality Too Difficult for Undergraduates?
- nicksauce
- · Replies 6 ·
High School Can Styrofoam Support Heavy Loads?
- abhimohpra
- · Replies 3 ·
Graduate How Do Asymmetric Capacitors Achieve Lift?
- Jim Kata
- · Replies 4 ·
Physicists famous for not-physics
- flamenco
- · Replies 20 ·
Physics: Guessing a Solution - Einzats Spelling
- Distortion
- · Replies 4 ·
Undergrad The Kaye effect - Leaping Shampoo
- PlasmaSphere
- · Replies 2 ·
Graduate Tachyon Pistols: A Fun Little Paradox
- leftyguitarjo
- · Replies 1 ·
Where Can I Find a Quality Dewar Flask for Under $400?
- Guthran
- · Replies 10 ·
Undergrad Why Is Weather Considered a Chaotic System?
- Yoni
- · Replies 2 ·
High School Doppler wavelength shift equation
- bse
- · Replies 3 ·
Beware the tidal bulges: We'll be devoured very soon
- arildno
- · Replies 17 ·
Undergrad Should linear regression always be forced through the origin?
- garyman
- · Replies 3 ·
High School Basic physics- chain strength question.
- 8th Dumbest
- · Replies 2 ·
High School What are the Chinese translations for common physics terms?
- SheldonG
- · Replies 3 ·
Graduate Can Objects Escape a Hole Through a Planet Without a Core?
- Deef
- · Replies 2 ·
High School Which is Denser, Liquid Water or Ice?
- austin15
- · Replies 8 ·
High School Odd results from an incandescent bulb
- kwah
- · Replies 9 ·
Undergrad Is There a Formula Linking Charge, Velocity, and Weight of a Molecule?
- dranseth
- · Replies 1 ·
Undergrad How Do I Determine Salt Density and Convert Voltage to Intensity for Graphing?
- stevenbarea
- · Replies 1 ·
News Looking for a Physics Comic Strip
- Poop-Loops
- · Replies 6 ·
How does this device work?
- enricfemi
- · Replies 1 ·
Undergrad Would a Human in Space Be Pulled Toward the Sun Without External Forces?
- deargodnoargh
- · Replies 10 ·
Undergrad Physical meaning of a fourier transform?
- dst
- · Replies 6 ·
High School Binding Energy makes life possible. Do you agree?
- itisali
- · Replies 13 ·
High School Does mass directly affect gravitational pull in perfectly spherical objects?
- shadders
- · Replies 4 ·
Graduate Hypothesis of charged particles filling space causing gravity and magnetism
- ask
- · Replies 3 ·
Undergrad Will Fuel Burn Up Upon Re-Entry?
- Loren Booda
- · Replies 3 ·
Undergrad Creativity in Physics: Berkeley vs IIT
- ZPower
- · Replies 2 ·
High School Physics Olympiad: Links, Notes, Problems
- dimitris t
- · Replies 1 ·
Graduate How Can Color Theory Modeling Be Applied to Avian Species Perception?
- curly_ebhc
- · Replies 1 ·
Undergrad Effects of Earth's magnetic pole shift on modern technology
- Blaxdragon
- · Replies 8 ·
Undergrad How Do Bonds Behave in Liquids?
- pixel01
- · Replies 1 ·
Graduate Torsion Field Question from a total newbie
- Neiby
- · Replies 6 ·
Graduate Molecular Simulation Research Ideas Needed
- raintrek
- · Replies 1 ·
Films about (fictional) physicists
- oedipa maas
- · Replies 6 ·
Did You Know Feynman Played the Bongos?
- kdv
- · Replies 10 ·
Whispering Gallery at St. Paul church
- Greg Bernhardt
- · Replies 23 ·
High School One What is the shortest wavelength you can hear?
- Tuxedo
- · Replies 3 ·
Undergrad Why do waves reflect at the open end of an organ pipe?
- sadhu
- · Replies 1 ·
Is it too late to learn advanced physics at 27 years old?
- rockstar24
- · Replies 15 ·
Is There a List of Must-Watch Physics Documentaries?
- karnten07
- · Replies 1 ·
Graduate Physics of far from equilibrium systems and self organization
- ALYAZAN
- · Replies 1 ·
Graduate Does quantum mechanics work differently without observers in the early universe?
- sonhouse
- · Replies 18 ·
Graduate Potential Risks of the Large Hadron Collider
- Pythagorean
- · Replies 6 ·
Undergrad How Do Cube Root Numbers Relate to the Fraction 1/8 in Determining Pitch?
- PH7SICS
- · Replies 3 ·
High School Why Did the Water Level Drop in a Sealed Graduated Cylinder?
- cornflakes
- · Replies 1 ·
High School Digital and quantized signal, are one same thing?
- Physicsissuef
- · Replies 3 ·
The Mechanical Universe...and Beyond series free online
- arunma
- · Replies 17 ·
Graduate Getting an extra 22 nanoseconds out of life
- D H
- · Replies 11 ·
Graduate Can something massless be stationary ?
- ValenceE
- · Replies 26 ·
High School Canceling out low frequencies noises (subwoolfers)
- ian_durrant
- · Replies 12 ·
Graduate Is Swapping Time and Light Concepts Valid in Physics?
- John Richard
- · Replies 19 ·
Undergrad Can a syphon return liquid to the same pool indefinitely?
- cmd5403
- · Replies 4 ·
Undergrad Resonance, standing waves and bass
- FredMadison
- · Replies 2 ·
Undergrad Vacuum vs. Centrifuge - equivalence
- dsch
- · Replies 1 ·
High School Ice sticking to the mould problem.
- ciarandunlevy
- · Replies 6 ·
High School Significant Numbers: Rounding Rules
- bennington
- · Replies 4 ·
Undergrad What Modern Physics Concept Is Easiest to Understand?
- Loren Booda
- · Replies 7 ·
High School Making a stronger air flow using 2 fans
- chrisalviola
- · Replies 7 ·
High School Does time actually exist or is it just a measurement?
- kateman
- · Replies 69 ·
Undergrad Understanding Intensity of Plane SHW in 1D, 2D, and 3D
- sadhu
- · Replies 6 ·
Graduate Is the scientific method limiting the potential of physics?
- shotgun
- · Replies 4 ·
Favourite Physics/Maths Related Pictures
- _Mayday_
- · Replies 10 ·
High School How fast can a ship travel at 525 gravities in space?
- glondor
- · Replies 6 ·
Undergrad Are phases with a 2π difference truly equal in SHM and waves?
- sadhu
- · Replies 7 ·
High School Can a *gas* be visible to the naked eye?
- spriggig
- · Replies 21 ·
High School How Can I Build a Stable Tower with Just Paper and Tape?
- bibliophile
- · Replies 15 ·
Undergrad What is the relationship between sound wave compression and the Doppler Effect?
- _Mayday_
- · Replies 8 ·
Do physicists develop smoking, drinking, and coffee habits from stress?
- scott_alexsk
- · Replies 5 ·
FREE Materials Science Lecture Notes
- neutrino
- · Replies 7 ·
High School Finding Wavelength of mosquito wings
- zachcumer
- · Replies 8 ·
High School What Happens Inside a Cathode Ray Tube During Electron Movement?
- Physicsissuef
- · Replies 2 ·
High School Where Can I Find Detailed Physics Study Resources with Animations?
- goyal.vishesh
- · Replies 2 ·
High School Is the Russian Helicopter Death Ray Based on Multi-Beam Klystron Technology?
- klystronman
- · Replies 6 ·
High School Total number of universal physical constants and their dependencies
- chc_cac
- · Replies 1 ·
Undergrad Can someone explain this physics passage and picture?
- Pete2s
- · Replies 4 ·
Graduate Physics motivated POVs in the time problem
- jostpuur
- · Replies 11 ·
Graduate Getting bubble to center in sonoluminescence at 25 kHz
- linnus
- · Replies 3 ·
High School Advantages of Radian Measurements
- _Mayday_
- · Replies 7 ·
Noisy Farts: A Puzzling Conundrum
- lah214
- · Replies 3 ·
Graduate Is there any truth to this? FTL Gravity and EM Waves
- STS816
- · Replies 1 ·
High School What is Energy? - Physics Forum Introduction
- basePARTICLE
- · Replies 35 ·
Undergrad Is plasma cosmology a valid theory of how the sun works?
- henxan
- · Replies 110 ·
High School How to Measure Height of Clouds with Binoculars, Camera, etc.
- pixel01
- · Replies 4 ·
Graduate What is the physics behind Ouija board experiences and the ideomotor principle?
- cosmicgall
- · Replies 26 ·
Graduate Schrodinger's cat filmed experiment
- surpasrealist
- · Replies 2 ·
Undergrad What Are the Fundamental Laws of Vibrating Strings?
- claudette
- · Replies 1 ·
High School How does tension affect wave speed in different mediums?
- astro_kat
- · Replies 7 ·
Undergrad How do I recognize when to solve physics problems using ratios?
- Substance D
- · Replies 4 ·
High School Physics Fun at Home: Share Your Ideas!
- CraigD
- · Replies 5 ·
Undergrad What Are the Values of Young's Modulus and Poisson's Ratio for Sand?
- ranaroy
- · Replies 3 ·