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 How to write uncertainities on different measurement
- Awsom Guy
- · Replies 7 ·
High School Why does sound travel faster through helium if it's less dense?
- leroyjenkens
- · Replies 23 ·
High School Calculating Fluid Density: Beyond the Formula
- mmg0789
- · Replies 3 ·
Undergrad How do you find the degree of freedom for energy
- Storm Butler
- · Replies 9 ·
High School David Blaine - 17 min breath hold
- Alfi
- · Replies 56 ·
Graduate What is Physical Basis of Tuning Note in Western Musical scale
- MusicPhysics
- · Replies 30 ·
Graduate Can I call myself a physicist yet?
- flatmaster
- · Replies 133 ·
High School Characteristics and properties of milk
- hotdoggyurkey
- · Replies 1 ·
Undergrad Good online reference for units, dimensions and dimensional analysis
- kexue
- · Replies 5 ·
Undergrad Half of Energy: Where Does It Go? (Solving e=mv^2)
- ankitpandey
- · Replies 3 ·
Can a time machine receive messages from the future?
- danov
- · Replies 8 ·
Graduate Can we understand QM by giving up reductionism?
- Finbar
- · Replies 12 ·
Why do cell phone ringtones play through television speakers?
- thomasxc
- · Replies 11 ·
High School What would happen if a tube like this were placed in the earths atmosphere?
- Fotenks
- · Replies 3 ·
Graduate Modern Physics, The Observer, and free-will
- JDStupi
- · Replies 11 ·
High School How Does Energy Transfer from Kinetic to Sound?
- ngjingyi
- · Replies 7 ·
Graduate How do I plot a function with frequency and energy using Mathematica?
- TheDestroyer
- · Replies 6 ·
Graduate What Will the Next Paradigm Shift in Physics Look Like?
- swokrams
- · Replies 26 ·
Three suns in the sky Believe it or not
- emaad
- · Replies 8 ·
Graduate Is the physics in Angels & Demons completely off the mark?
- DaveC426913
- · Replies 41 ·
Undergrad Transverse waves can propagate through a solid
- Rashid101
- · Replies 3 ·
Graduate Time's arrow, or what universal property is asymmetric, anyway?
- Loren Booda
- · Replies 40 ·
Graduate Degenerate matter and temperture
- Starwatcher16
- · Replies 1 ·
High School Wireless advantage and disadvantage
- ecestar
- · Replies 6 ·
Can you see the back of your head
- jamesabc
- · Replies 9 ·
High School Charging a battery with twenty 2W solar panels
- nascar
- · Replies 3 ·
Graduate Illegitimate source that there is no such thing as a true vacuum
- Mentallic
- · Replies 9 ·
Undergrad Does sunlight increase atmospheric pressure and gravity on the sunny side of a planet?
- gonegahgah
- · Replies 23 ·
Undergrad Uncertainty Numbers: Greater Than Ruler?
- xswtxoj
- · Replies 1 ·
High School Same # of Sig Figs for Cylinder/Wire Density?
- xswtxoj
- · Replies 1 ·
High School Different due to the mass of the object
- xswtxoj
- · Replies 1 ·
High School Is there Gravity inside the human body?
- koudy
- · Replies 9 ·
High School Can a sugar ant walk on a soap bubble without bursting it?
- maze
- · Replies 11 ·
High School Is the Earth's Atmosphere Ever Completely Pure?
- erik
- · Replies 4 ·
Hubble Space Telescope repair mission in 2009
- LowlyPion
- · Replies 47 ·
What Should We Serve at a Physics Themed Dinner?
- samack
- · Replies 7 ·
Undergrad What is autocorrelation time and how does it relate to covariance?
- jophysics
- · Replies 2 ·
Graduate What are the Newest Developments in Energy Storage Technology?
- Stanley514
- · Replies 1 ·
Graduate Wilczek's Lightness and other indices
- marcus
- · Replies 10 ·
High School Would a Human Burst in a Room-Sized Vacuum?
- [Nicolette]
- · Replies 3 ·
High School Why does the earth and the sun and other planets have gravity?
- Vorbis
- · Replies 21 ·
Who was Hugh Everett, my father, and what is the Many World's Theory?
- Ivan Seeking
- · Replies 1 ·
Undergrad Radient energy vs nonradient energy
- jsomers
- · Replies 7 ·
Graduate How do you explain and convince people that relativity and quantum physics are real?
- Xannax
- · Replies 2 ·
Graduate What is the evidence for GR and against the graviton theory?
- UnicycleGuy
- · Replies 53 ·
High School How Do Significant Figures Affect Physics Calculations?
- MathGangsta
- · Replies 6 ·
Where Can I Find a Good Optics Discussion Forum?
- watertreader
- · Replies 3 ·
Undergrad Do waves need to be in phase to form stationary waves?
- gangsta316
- · Replies 11 ·
New Yale Internet Physics resource
- Peter Morgan
- · Replies 9 ·
Graduate Is there any need to introduce time as a parameter?
- sanjibghosh
- · Replies 20 ·
Undergrad Describe FFT: Properties/Frequency Needed
- mgberlin
- · Replies 3 ·
Undergrad Which UV Radiation Is Most Effective in Polymer Degradation?
- Dukus
- · Replies 1 ·
Austria To Leave CERN - Find Out More!
- vanesch
- · Replies 1 ·
What If Newton and Einstein Were Alive Today?
- ZepTepi
- · Replies 44 ·
Undergrad Internet access via transmission lines?
- Starwatcher16
- · Replies 3 ·
High School Calculate what distance the sunset moves
- jtaravens
- · Replies 3 ·
Graduate How to analyze non-smooth experimental data
- t.m.p.c
- · Replies 1 ·
Undergrad Are ocean levels uniform across all bodies of water?
- Jingo
- · Replies 5 ·
High School Would an acidic atmosphere remove oxygen from the area it affected?
- Plasma
- · Replies 1 ·
Undergrad What Are the Physics Behind Drawing Up Medication in a Syringe?
- tillitea
- · Replies 3 ·
Graduate Can Grand Unification Truly Encompass All Physical Laws?
- a4mula
- · Replies 9 ·
Undergrad How do sponges absorb water and work mechanically?
- ExactlySolved
- · Replies 3 ·
What is the answer to question 3 in that TED video?
- WiFO215
- · Replies 3 ·
Undergrad What does a self-resonant system mean?(e. g: a self-resonant coil )
- adn
- · Replies 1 ·
Undergrad What happens when two vortexes meet spinning in opposite directions?
- gonegahgah
- · Replies 6 ·
Graduate Create antigravity conditions on earth?
- monty37
- · Replies 4 ·
High School Safety During Explosions: What to Do
- devvratg.2008
- · Replies 3 ·
Graduate Conway-Kochen free will theorem and quantum mechanics
- cstromeyer
- · Replies 22 ·
Graduate Cube Dissection by Elusive Cube: 176 Magnets, 14 Crystall Lattice Structures
- minima
- · Replies 1 ·
High School Linen sheet vs polyester blanket
- saltine
- · Replies 7 ·
High School What freezes faster in an ice tray, cool or hot water?
- timejim
- · Replies 38 ·
MasteringPhysics: A Controversial Tool for Homework in Physics
- vorcil
- · Replies 20 ·
Graduate Is the Standard Model of Physics Aligned with Bohm's or Bohr's Interpretation?
- Descartz2000
- · Replies 4 ·
Engineer -> Experimental Physicist -> Theoretical Physicist
- omega_M
- · Replies 27 ·
High School Researching Elements - How Many Are There?
- Noog_Z
- · Replies 9 ·
High School Understanding Gravitational Force: A Simple Explanation
- Shaad
- · Replies 8 ·
Stop the world, I'm getting dizzy
- tribdog
- · Replies 3 ·
Undergrad Can gravity be made negative or repulsive for space travel?
- uperkurk
- · Replies 27 ·
High School Is information destroyed when someone dies?
- Charlie G
- · Replies 15 ·
High School Where Can I Buy Advanced Physics Experiment Kits?
- dipstik
- · Replies 1 ·
Graduate Bernard d'Espagnat Quote
- The thinker
- · Replies 6 ·
Graduate Do wave functions collapse instantly?
- benk99nenm312
- · Replies 15 ·
High School Why does the wind blow off the ocean during the day and off the land at night?
- ejwb
- · Replies 5 ·
High School Physics Project Experiment Ideas
- pearly_girly
- · Replies 2 ·
High School Compressed air explosing or fire
- ramz28
- · Replies 5 ·
High School Physics of Keeping Warm Vs. Keeping Cool
- TheStatutoryApe
- · Replies 22 ·
Undergrad How Do You Derive and Define the Logistic Equation?
- Fyzzllee
- · Replies 1 ·
Escape from totally closed empty room
- Enya25
- · Replies 20 ·
Undergrad Future prospects of different physics fields
- af394
- · Replies 6 ·
Graduate Wave on string, c^2 = T/rho. Assume T proportional to rho => c^2 = constant.
- Spinnor
- · Replies 3 ·
High School What topics should I compare for an AM vs FM broadcasting report?
- HSV
- · Replies 5 ·
High School Why can I hear myself through my cellphone?
- springBreeze
- · Replies 3 ·
Undergrad Is this how i would calculate the energy stored in an object on a wave?
- Green Zach
- · Replies 10 ·
Graduate Einstein's Zurich notebook calculations and theories
- waht
- · Replies 3 ·
High School Why Are Certain Physics Concepts So Challenging to Understand?
- alexk307
- · Replies 3 ·
Undergrad Properties of High Viscosity Liquids
- sambo9897
- · Replies 2 ·
Undergrad Why does Physics have to be so hard?
- Mugen112
- · Replies 24 ·
Undergrad To obtain a uniform alloy, cool quickly or slowly?
- DyslexicHobo
- · Replies 4 ·
Physics experiments to do during school break in a small town
- ScienceNerd36
- · Replies 7 ·