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 Do you have the answers for AP Physics B 1988 and 1984 tests?
- mistuhihi
- · Replies 1 ·
Undergrad Should there be a law of information preservation?
- haiha
- · Replies 3 ·
Graduate How do physicists deal with emergent properties?
- nightflyer
- · Replies 23 ·
Gravity rocket launcher interactive simulation
- sanman
- · Replies 7 ·
Undergrad Air volume, compression and bouyancy
- dille71
- · Replies 20 ·
Undergrad Questions about perpetual machines
- linux kid
- · Replies 5 ·
Real Magic - a truly fascinating demonstration
- Chaos' lil bro Order
- · Replies 2 ·
Does objective reality support claims about old atomic weapons?
- NoTime
- · Replies 14 ·
Graduate Chapter 7 of Jackson's Classical Electrodynamics
- Rach3
- · Replies 9 ·
Undergrad Can we measure physical quantities as complex numbers?
- Swapnil
- · Replies 66 ·
Undergrad Is it possible a metal to the thickness of
- linux kid
- · Replies 3 ·
Graduate Can a drawing represent both a neighborhood and a chemical reaction simultaneously?
- chaoseverlasting
- · Replies 27 ·
Undergrad How to find citation index of a specific researcher?
- kollins
- · Replies 1 ·
High School Why is the continuity equation called the continuity equation?
- Repetit
- · Replies 1 ·
High School What is the physical meaning for time?
- feynman60
- · Replies 6 ·
Graduate Calculating Putt Break Over Distance w/ Friction
- DylanB
- · Replies 1 ·
Where to ask physics questions for a sci-fi story
- Darth Bandon
- · Replies 16 ·
Graduate Is simultaneous time a real concept?
- RAD4921
- · Replies 3 ·
Undergrad How many days to finish painting with additional painters joining after 8 days?
- powergirl
- · Replies 2 ·
Graduate Are there systemetic methods to finding laws of nature?
- theName()
- · Replies 5 ·
Is Pluto Still a Planet?
- slugcountry
- · Replies 69 ·
Undergrad Do fractal perimeters become finite at the Planck scale?
- freerangequark
- · Replies 5 ·
High School Using CGS or SI Units: When to Choose?
- Saketh
- · Replies 3 ·
High School How Does a Mist Maker Create Mist?
- Micko
- · Replies 6 ·
Struggling to Learn on Your Own? Get Guidance on Physics Forums!
- studentlife
- · Replies 1 ·
Undergrad Disproving physics in movie scenes with slow-motion footage
- integra2k20
- · Replies 22 ·
High School What is seismology?
- powergirl
- · Replies 5 ·
Undergrad Why are brick homes common if wood insulates better?
- pivoxa15
- · Replies 9 ·
Graduate Is the claim that the universe came from a pion valid?
- Czarnian
- · Replies 3 ·
Open book thermodynamics exam without the book or calculator
- siddharth
- · Replies 22 ·
High School What is the significance of plasma as the 4th phase of matter?
- Nuklear
- · Replies 3 ·
High School Why is the electron source called the cathode if cat means positive?
- pivoxa15
- · Replies 8 ·
Graduate Would air flow through a straw connecting Earth and the Moon?
- Saketh
- · Replies 14 ·
High School Why is it warm on snowy mountains on sunny days?
- pivoxa15
- · Replies 7 ·
Graduate Scoring high on Baez's crackpot index with rope theory
- Jimmy Snyder
- · Replies 12 ·
High School What Can We Learn About Physics From This Donkey's Predicament?
- Rach3
- · Replies 4 ·
Undergrad A material/ substance that does not allow the through it
- scupydog
- · Replies 7 ·
Graduate Does general relativity imply all of time already exists in spacetime?
- daniel_i_l
- · Replies 8 ·
Greatest Science websites of 2006
- Chaos' lil bro Order
- · Replies 14 ·
High School Stack poker chips in a staircase-like fashion
- bigdave
- · Replies 34 ·
High School John Baez's Crackpot Index: Unpacking String Theory?
- Leopold Infeld
- · Replies 5 ·
Problems with Frank Tipler's Physics of Immortality
- Arithus
- · Replies 17 ·
Undergrad Rail Gun using disposible camera's flash charger
- Stevedye56
- · Replies 5 ·
High School What Does XKCD Teach About the Right-Hand Rule?
- neutrino
- · Replies 5 ·
High School Why warm air holds more moisture and why cold winds don't heat up
- mindboggling
- · Replies 3 ·
Undergrad Is the barometer height building story a hoax?
- ZapperZ
- · Replies 32 ·
Hutchinson Effect - What Do Folks Think?
- Entheos
- · Replies 3 ·
What fraction of physics bestsellers are Feynman?
- marcus
- · Replies 2 ·
Future medical applications and safety improvements for hospital X-rays
- boredooom
- · Replies 8 ·
High School What Is the Rocket Equation From a Non-Mathematician's Viewpoint?
- artrocket
- · Replies 6 ·
What Surprises Await in the CD Version of Feynman's Lectures?
- Jimmy Snyder
- · Replies 2 ·
Undergrad How long did it take you to become competent at physics?
- aeroboyo
- · Replies 17 ·
Graduate Is Quantum Movement Similar to Teleportation in Subatomic Particles?
- regent
- · Replies 3 ·
High School How much does a 12 fl oz beer bottle weigh?
- sphoenixee
- · Replies 20 ·
For sure the stupidest question you'll hear this week
- mathlete
- · Replies 1 ·
Graduate How do know identify crackpot from real physics
- aeroboyo
- · Replies 20 ·
Undergrad Physics course notes from University of Winnipeg
- Astronuc
- · Replies 1 ·
Graduate Us humans visualising the fourth dimensional line element
- PMCIIII
- · Replies 16 ·
Graduate Cutting objects at the molecular level
- nikolatesla20
- · Replies 4 ·
Graduate Rogue waves and chaos theory for a research project
- xeon
- · Replies 18 ·
I am looking for a modeling software.
- dekelc
- · Replies 8 ·
Undergrad ITER nuclear fusion reactor agreement signed
- Mk
- · Replies 13 ·
Undergrad Probability in Physics - Get Answers Here!
- MadScientist 1000
- · Replies 4 ·
High School Physics quotes for a class T-shirt design
- hannibalisfun
- · Replies 16 ·
High School Stationary Wave Questions: Can Open Tubes Produce Them?
- momomo_mo
- · Replies 1 ·
Undergrad What is 2D Density? Understanding Mass, Volume, and Area in Relation to Density
- tony873004
- · Replies 8 ·
High School Preparing for Physics: Where to Start?
- Kayla
- · Replies 3 ·
High School What is impeadence of ionized air?
- Agnostic
- · Replies 7 ·
High School Where can I find massless string for physics experiments?
- l_tunaboy
- · Replies 18 ·
Undergrad How Does Nanotechnology Work?
- houman02
- · Replies 5 ·
How can someone achieve invisibility?
- nomorevishnu
- · Replies 74 ·
High School How Do Venturi Meters and Filter Pumps Work?
- Cruiser
- · Replies 2 ·
Where Can I Find GCE A-Level Past Papers?
- d1v1n1ty nb
- · Replies 1 ·
High School Make a Guass Rifle in 3 Days: Simple Directions
- homeycat
- · Replies 2 ·
American Physical Society coloring book for kids
- ZapperZ
- · Replies 15 ·
Undergrad Learn Physics: Best Book to Teach Yourself
- Stack81
- · Replies 4 ·
Undergrad Why Can an Equation Be Homogeneous but Incorrect?
- d1v1n1ty nb
- · Replies 7 ·
Undergrad What Miraculous Experiments Did Nikola Tesla Conduct in His 1899 Lab?
- zoobyshoe
- · Replies 8 ·
Graduate Is the Universe Expanding in the Time Dimension?
- Gablar16
- · Replies 13 ·
Finding video or images showing foot contact time with a football
- lawtonfogle
- · Replies 4 ·
Graduate What would a theory of everything have to say about its own existence?
- kant
- · Replies 9 ·
Would you relocate to an Earth-like planet if you could reach it with new spacecraft?
- wolram
- · Replies 17 ·
Graduate How did Einstein arrive at general relativity without experimental evidence?
- robert Ihnot
- · Replies 10 ·
Graduate Can My Theory Revolutionize Science Beyond Relativity?
- gautamaish
- · Replies 4 ·
High School Parallax error - what type of error is it?
- skyglow1
- · Replies 5 ·
Undergrad Is Gravity the Ultimate Source of Potential and Kinetic Energy?
- disturbed1
- · Replies 4 ·
Graduate Uncertainty principle - epistemic or more?
- Tsunami
- · Replies 5 ·
High School Do molecules exist in all forms of matter like steel?
- sog
- · Replies 18 ·
Graduate Metamaterial Electromagnetic Cloak at Microwave Frequencies
- Ivan Seeking
- · Replies 9 ·
High School Why do electric burners make ticking sounds?
- JoAuSc
- · Replies 2 ·
Graduate Looking for the physical properties of the skin
- fargoth
- · Replies 10 ·
High School What do the symbols in Physics Formulas mean? Help needed!
- TDS
- · Replies 4 ·
Are You Ready for the Argonne Open House 2017?
- ZapperZ
- · Replies 12 ·
Graduate Can Antigravity Unlock Space Travel and Pollution-Free Energy?
- Event_Horizon
- · Replies 46 ·
High School Question regarding System of Units
- junior_J
- · Replies 4 ·
High School What is the shoebox experiment illustrating parallel universes?
- jonathon0074
- · Replies 5 ·
High School Can Tesla's claimed inventions work in physics?
- taylaron
- · Replies 7 ·
High School Why do some people hear a high-pitched noise from TVs?
- Stevedye56
- · Replies 20 ·
Tonight's Full Moon 12 Percent Bigger
- Evo
- · Replies 20 ·
High School Physics Experiments: Constructing Investigation Design Report
- jstark11
- · Replies 4 ·