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
Graduate Dark Matter: Waste or Unknown Substance?
- MrREC
- · Replies 3 ·
Undergrad Why do inertial mass and gravitational mass need to be equivalent?
- IWantToLearn
- · Replies 8 ·
Graduate River flow on a planet or large object.
- jewbinson
- · Replies 13 ·
Graduate Is Source Code Film's Interpretation of Quantum Physics Flawed?
- boffinwannabe
- · Replies 51 ·
High School Teen uses Fibonacci sequence to make solar energy breakthrough
- baywax
- · Replies 37 ·
Undergrad Equation required to calculate exponential rate
- Ari33
- · Replies 5 ·
High School Longitudinal and transverse wave propagation
- Misr
- · Replies 24 ·
High School Where to get feedback on a physics study of weather and ice
- karen_lorr
- · Replies 5 ·
Graduate Integral of dp² with boundaries Ps and P0
- hermano
- · Replies 12 ·
Graduate Is the Cometary Debris Theory of the Chicago Fire Pseudo-Science?
- BadBrain
- · Replies 8 ·
Undergrad How much compressed air is needed to raise a sunken vessel at 50 feet depth?
- Painter1
- · Replies 19 ·
High School Are Earthquakes Induced by Human Activity or Extraterrestrial Factors?
- kthouz
- · Replies 8 ·
High School How can we consider this one direction?
- Misr
- · Replies 12 ·
Graduate Physicists DO have a sense of humor
- DrChinese
- · Replies 26 ·
Undergrad Line integrals distance elements
- y.moghadamnia
- · Replies 3 ·
Graduate What does "integrating out" mean in physics?
- Lapidus
- · Replies 12 ·
Graduate Is It Too Late to Learn General Relativity at 50?
- jmatt
- · Replies 12 ·
Undergrad Units Question: Avagadro's Constant
- FireStorm000
- · Replies 11 ·
Undergrad How Do You Find the Derivative in Physics?
- Alex1136
- · Replies 5 ·
Graduate Would special relativity have been discovered without Einstein?
- chaszz
- · Replies 7 ·
High School Does Mass Have Volume? Photons Too?
- dailydc
- · Replies 3 ·
High School What are waves and how do we detect them?
- Misr
- · Replies 43 ·
Photo of Orion Nebula Taken 2 Weeks Ago
- Drakkith
- · Replies 11 ·
Graduate Will the Theory of Everything Mark the End of Physics?
- membrane
- · Replies 21 ·
High School Do square, sawtooth, and triangular waves exist in nature?
- PainterGuy
- · Replies 29 ·
Best Graduate schools for Physics
- krzywicki
- · Replies 13 ·
High School What Is Phase in Physics?
- venkypunjabi
- · Replies 2 ·
Graduate Fundemental quesitons within physics
- Functor97
- · Replies 11 ·
Is Plausible Magic Possible in a Tenth-Century Setting?
- HardDiction
- · Replies 14 ·
High School Why Is a Soap Bubble Formed?
- mrinmoymahapa
- · Replies 1 ·
Undergrad At what size do turbines stop becoming efficient?
- Kidphysics
- · Replies 8 ·
Graduate The sinking of the Scorpion SSN 589
- TheTommy1
- · Replies 22 ·
High School Naming of electron photon messon bosson proton?
- swapneel5
- · Replies 5 ·
High School Is Energy Finite? thoughts ideas
- CDCraig123
- · Replies 18 ·
Undergrad Directed Distance in Coordinate Geometry: Sign Convention
- batballbat
- · Replies 5 ·
Undergrad Producing a vacuum using a turbine?
- jimhebert
- · Replies 24 ·
Why Are Physicists Obsessed with Hiking?
- CyberShot
- · Replies 21 ·
Can caskets really explode underground due to gas buildup?
- kaleidoscope
- · Replies 2 ·
High School Hidden boxthe under the surface of earth is missing
- shiva999
- · Replies 6 ·
Undergrad Object visibility and size-to-distance ratios
- jimgavagan
- · Replies 19 ·
Graduate Historically Important Problems in Physics
- 1Kris
- · Replies 5 ·
High School Why we not get attracted by pyramid ?
- joyever
- · Replies 14 ·
High School Thunderstorms and Cars: Is Your Vehicle at Risk?
- shiva999
- · Replies 9 ·
Undergrad Why does a plucked guitar string produce multiple harmonics?
- physickkksss
- · Replies 101 ·
High School What exactly are electrogravitics?
- IndustriaL
- · Replies 9 ·
High School How Do Lithium Batteries Power Our Devices?
- student85
- · Replies 9 ·
Graduate Fast fourier transform on exponential decay function
- xfshi2000
- · Replies 4 ·
High School What happen if everything in earth becomes steady?
- joyever
- · Replies 1 ·
Graduate Uncertainty of room mode frequencies
- pitchtwit
- · Replies 4 ·
Finding physics speakers for Bay Area college club
- blaughli
- · Replies 3 ·
Is Physicsforums Crackpot Bingo a Fun Way to Spot Suspected Crackpots?
- micromass
- · Replies 18 ·
Undergrad Can Matter Really Have Negative Energy?
- nouveau_riche
- · Replies 4 ·
What happens to your tongue when you lick a frozen aluminum ice cream scraper?
- daisyquirante
- · Replies 1 ·
Graduate Could Mirror Matter Explain Human Consciousness?
- Alexander1304
- · Replies 6 ·
Graduate Iisc interview for integrated Phd(physics)
- usha
- · Replies 1 ·
High School If the moon suddenly vanished, what would people on earth experience?
- Meatbot
- · Replies 27 ·
Graduate Sharpening knife edges, what is actually going on?
- dbcad
- · Replies 14 ·
Graduate Is it realistic to finish a classical electrodynamics book in 2 months?
- Qubix
- · Replies 3 ·
Experimental Evidence for Conciousness as the Fifth Force.
- Disconnected
- · Replies 19 ·
Graduate What are things that are expected to be discovered ?
- phy_freak
- · Replies 11 ·
High School What Are the Consequences of Damage to the Ionosphere?
- LT72884
- · Replies 4 ·
Undergrad What is the smallest particle ever detected by scientists?
- Trevormbarker
- · Replies 19 ·
Graduate Identifying Proper Photocathode Material
- Mazurka
- · Replies 1 ·
Movie/game physics you wish would be accurate
- SeventhSigma
- · Replies 34 ·
High School Using theoretical science within my book (graphic novel) ADVISE
- cruggero
- · Replies 55 ·
Undergrad What is the purpose/significance of doing a FFT on a signal?
- zheng89120
- · Replies 4 ·
Graduate What Is Perspective Beyond Optics?
- morg
- · Replies 7 ·
Time travel not possilbe anymore?
- flyingpig
- · Replies 8 ·
Undergrad What will be the Combined value of solar absorptivity?
- chetanladha
- · Replies 3 ·
High School Universal Gravitational Constant
- Allojubrious
- · Replies 25 ·
Photo Contest - You Cannot Violate The Laws Of Physics (7/16-7/22)
- ZapperZ
- · Replies 26 ·
Undergrad What are the A and B constants in ionic potential energy?
- f3nan
- · Replies 1 ·
Graduate Is There a Deeper Explanation for Coincidence in Physics?
- Inquirer1
- · Replies 17 ·
Undergrad Understanding Doppler Shift Equations for Calculating Object Velocity
- icosahedral
- · Replies 4 ·
Graduate Feynman is more important than Bohr
- causalset
- · Replies 4 ·
Einstein's Nordic Assembly Speech,Einstein Quotations Etc.
- Anamitra
- · Replies 1 ·
Graduate What Are the Units of the Green's Function in the Wave Equation?
- elgen
- · Replies 1 ·
My First Pics of Jupiter - Terrible But Awesome!
- Drakkith
- · Replies 10 ·
High School What are the 6th and 7th states of matter?
- ananthan345
- · Replies 7 ·
Undergrad Where Can I Find Challenging Classical Physics Problems Online?
- The_Doctor
- · Replies 2 ·
Graduate Do shock waves from different explosions converge to the same shape at distance?
- ClydeH
- · Replies 3 ·
High School Would a pile of feathers weigh the same as a pile of gold at Earth's center?
- Goongyae
- · Replies 9 ·
High School Calculating Pond Evaporation: Is Floating Glass a Good Idea?
- peter2108
- · Replies 2 ·
High School Are atoms ever added to the universe?
- cody628496
- · Replies 13 ·
How Did Femme_physics Celebrate the 999th Post Milestone?
- I like Serena
- · Replies 9 ·
Undergrad Why Do Things Affect Each Other in the Universe?
- greatteamwork
- · Replies 66 ·
High School Pipe C - More Water Pressure: Solve Puzzle
- kathiravan_k
- · Replies 6 ·
Undergrad How bright can sonoluminescence be?
- guss
- · Replies 4 ·
High School What is the affect of moon on tides?
- khurram usman
- · Replies 23 ·
Graduate Evaluating a theory connecting quantum mechanics and consciousness
- DrummingAtom
- · Replies 7 ·
High School How does a wave pass thru a medium?
- khurram usman
- · Replies 1 ·
Undergrad Venturi tube obeys ideal gas law?
- parislad
- · Replies 2 ·
Comprehensive online resources for physics and mathematics
- Simfish
- · Replies 2 ·
Is physics the easiest science to develop?
- Tosh5457
- · Replies 24 ·
High School How does a light illuminate without a complete circuit?
- Naty1
- · Replies 23 ·
High School Learning waves after studying motion
- Cbray
- · Replies 2 ·
Graduate When will be the next big leap foreward?
- AJ_2010
- · Replies 61 ·
Graduate Can a bacteria be described by physics?
- nonequilibrium
- · Replies 45 ·
Graduate Calculating right ascension from celestial longitude and other variables
- GLee
- · Replies 4 ·
Undergrad Exploding Soap Bubbles: A question of gasses.
- noregsson
- · Replies 2 ·