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
I am looking for interesting physics/math or logic problems
- pabilbado
- · Replies 19 ·
High School Can MRI Detect a Light Bulb Inside a Closed Box?
- fredreload
- · Replies 38 ·
Best physics journals for condensed matter and general updates
- chikou24i
- · Replies 4 ·
Undergrad Why does 'breaking' not occur in liquids and gases?
- Prannu
- · Replies 5 ·
Meet a Mentor: Doc Al | PF Insights
- Greg Bernhardt
- · Replies 16 ·
Undergrad Variation of Density with Elevation
- cruckshank
- · Replies 4 ·
Graduate PET Imaging Resolution: Lower E(max) for Superior Image Resolution
- BobP
- · Replies 4 ·
Undergrad 'Physics' Terms for Integral quantities?
- greswd
- · Replies 9 ·
High School What Are Some Engaging Physics Club Activities for Sixth Form Students?
- Physicsphysics
- · Replies 7 ·
Undergrad What is the Yield Strength vs Temperature Relationship for 4130 Steel?
- Physics_Kid
- · Replies 1 ·
Undergrad Why doesn't a fluorescent lamp implode and shatter ?
- Hurricane939
- · Replies 3 ·
Undergrad What are the physics of pole vaulting
- Nick tringali
- · Replies 4 ·
Undergrad Are all physics theories ultimately approximations?
- UchihaClan13
- · Replies 11 ·
Undergrad Distance from source to observe Doppler effect?
- TheCanadian
- · Replies 5 ·
High School Why pepper dust sticks to glass only where there's no print
- Camille
- · Replies 5 ·
High School Is the Earth Flat? Rapper vs. Astrophysicist Battle on SoundCloud
- houlahound
- · Replies 3 ·
High School Why do shower curtains blow inwards?
- alw34
- · Replies 26 ·
High School What is the definition of phase lag and phase difference?
- ajaysabarish
- · Replies 3 ·
Insights Rainbows are not Vampires - Comments
- anorlunda
- · Replies 88 ·
Graduate Non-linear properties in linear systems
- Charles Link
- · Replies 5 ·
Have You Seen the Physics Demo of a Physicist Tied to the Side of a Building?
- ZapperZ
- · Replies 6 ·
Undergrad What is the conversion factor for hydraulic conductivity units?
- Ashan_ok
- · Replies 1 ·
Graduate Interpreting complex capacitance and conductivity from a broadband dielectric spectrometer
- thebluser
- · Replies 1 ·
Millennial Could be Next Einstein: Nima Pasterski
- Greg Bernhardt
- · Replies 18 ·
Where can I buy Dr. Michio Kaku's Sci Fi Science DVDs?
- brainydoctor
- · Replies 2 ·
Graduate Ramjet/Scramjet Propulsion on a Vertical Rocket?
- onion3000
- · Replies 1 ·
High School Difference between direction and dimension
- Physical activity
- · Replies 7 ·
Undergrad Transverse and longitudinal waves
- smart_worker
- · Replies 6 ·
High School Why does a snowflake have six sides?
- barryj
- · Replies 6 ·
High School How do I estimate how tall this building is?
- Henrybar
- · Replies 6 ·
Undergrad Examples of units with non-integer exponents
- Chetlin
- · Replies 2 ·
Undergrad Ambiguity in dimensional analysis
- DaTario
- · Replies 17 ·
Let's use comics to answer some questions
- jim mcnamara
- · Replies 2 ·
Undergrad Finding body density from buoyancy in oil and water
- Poquinha
- · Replies 9 ·
Undergrad "The Portal problem" (Classical Mechanics solution)
- AlbertCG93
- · Replies 10 ·
What's this website about? ("nucleus layered view")
- hddd123456789
- · Replies 3 ·
Graduate What is the Superposition of Wave Functions in the US?
- davenn
- · Replies 3 ·
Undergrad Translation of handwriting into readable form
- coolul007
- · Replies 7 ·
What's your dominant learning style?
- Sophia
- · Replies 25 ·
High School Why does the rainbow have seven named colors if infinite combinations exist?
- Likith D
- · Replies 6 ·
High School Is the Journal of Atmospheric and Solar-Terrestrial Physics credible?
- houlahound
- · Replies 12 ·
High School What is the Meaning of Harmonic Content in Sound Waves?
- toesockshoe
- · Replies 1 ·
High School States of Matter That Aren't Fluids
- ScientificMind
- · Replies 5 ·
Undergrad Do sound waves have modes like vibrating strings do?
- toesockshoe
- · Replies 6 ·
High School Why don't vibrations below 20 Hz produce audible sound?
- toesockshoe
- · Replies 8 ·
High School How does a vacuum pump push gas out of a container?
- Intle
- · Replies 3 ·
Undergrad What research questions can wind flow simulations around Mount St Helens answer?
- Earthland
- · Replies 2 ·
Graduate Meaning of "equatorial radius in an orbital plane"
- M.T
- · Replies 3 ·
High School Why is Pi so occurring in physics
- jamalkoiyess
- · Replies 2 ·
High School Best popular physics and math books from 2014-2015
- RJ Emery
- · Replies 6 ·
Graduate Drum Resonance Physics: Understanding How Tunings Affect Frequency
- jp1390
- · Replies 1 ·
Undergrad Why Does My Calculated Molar Mass of Arsenic Differ from the Standard Value?
- phy9
- · Replies 3 ·
Insights Think You Know about the LHC? - Comments
- Greg Bernhardt
- · Replies 26 ·
High School Vibrations of a Violin (Physics)?
- bobbyboy
- · Replies 2 ·
High School Understanding Mainstream Physics
- Gjmdp
- · Replies 4 ·
High School Wind turbines turning in no wind?
- Kuzey Cem
- · Replies 1 ·
High School Why is there a hole in airplane windows?
- Happiness
- · Replies 6 ·
High School Why do physics majors have high IQs
- potato123
- · Replies 45 ·
Undergrad Designing an RC plane to fly on Mars with 50kPa atmosphere
- Batmoosemike
- · Replies 18 ·
Graduate Statistics and Data Science applied to Physics
- StatGuy2000
- · Replies 5 ·
Graduate Elite scientists can hold back science
- Ovolo
- · Replies 6 ·
High School Why does breathing out have more effect on surroundings?
- Sharkingboy8
- · Replies 13 ·
Name of The inventor of the first rocket?
- KineticFever
- · Replies 3 ·
High School Why is Specific Gravity Important?
- imsmooth
- · Replies 2 ·
Femto Photography: Capturing the Unseen World
- jobyts
- · Replies 3 ·
Greatest physics discovery in the past two years
- Pual Black
- · Replies 22 ·
Graduate Why do some materials absorb water and swell up?
- vin300
- · Replies 6 ·
Undergrad Identify this piece of equipment?
- NatFex
- · Replies 4 ·
High School Do Paper Contracts When Burnt?
- ajayraho
- · Replies 5 ·
Graduate Dealiasing in 2D: How to Effectively Use the 2/3 Padding Rule
- jollage
- · Replies 1 ·
Undergrad Is there a good book on only observational evidence
- toastercombo
- · Replies 5 ·
How to increase attendance at SPS chapter meetings
- jack476
- · Replies 6 ·
Graduate Fluorescence Spectroscopy and Stokes Shift
- RYANDTRAVERS
- · Replies 1 ·
Graduate Deduction of the equation of frequencies of a piano
- Bruno Tolentino
- · Replies 2 ·
High School Detect Window/Door opening closing using sensors
- rushi121
- · Replies 23 ·
Graduate Piano string vibration decay and harmonic amplitude relationships
- Bruno Tolentino
- · Replies 2 ·
High School Wind Turbine Effectiveness Project
- Max Pridgen
- · Replies 4 ·
High School What is the purpose of the term 'Matter'?
- Aerion
- · Replies 3 ·
High School What is the meaning of the term 'object'?
- Aerion
- · Replies 3 ·
High School What are photographic plates and why are they used in radioactivity experiments?
- 123kid
- · Replies 7 ·
High School Trouble Remembering Physics Equation with x + 5 = y + 2 and x + 3 = y
- Davi da Silva
- · Replies 11 ·
High School Preserving information/an object for a couple of billion years
- Dispalor
- · Replies 20 ·
Undergrad Static Cling - why is its effect permanent ?
- ramonegumpert
- · Replies 3 ·
Graduate Four waves formalism by Landau and Lifshitz
- sounouhid
- · Replies 4 ·
Graduate Physicists should take pride in their work
- klotza
- · Replies 8 ·
Undergrad What Are Some Major Research Facilities Like CERN in the US and Europe?
- JeremyG
- · Replies 5 ·
High School Can glass really break into tiny harmful dust particles?
- glassbreaker123
- · Replies 2 ·
Undergrad What kind of physics is involved in computer production?
- cmkluza
- · Replies 4 ·
Graduate Can a perfect circle touch a flat surface at only one point?
- Shropcakes
- · Replies 11 ·
Did Lord Kelvin Say "If You Can't Measure It, It Isn't Real!"?
- klimatos
- · Replies 1 ·
High School Any Interesting Problems I could try to solve?
- UncertaintyAjay
- · Replies 9 ·
Graduate Thermionic Emission Effects on Surfaces
- 123kid
- · Replies 2 ·
High School Does a Gravity of a planet determine density?
- Living Tribunal
- · Replies 6 ·
How is Michio Kaku regarded in the Physics world?
- Jamin2112
- · Replies 120 ·
How near we are to make a Real Iron Man's Arc Reactor?
- Aero_Arnendu
- · Replies 3 ·
Undergrad Could floating cities become a reality using rocket boosters?
- SteveManPhy076
- · Replies 1 ·
Undergrad Why Does Wave Energy Depend on Frequency and Not Wavelength?
- VVS
- · Replies 1 ·
High School Mother of a grade 12 physics student
- angryzeena
- · Replies 8 ·
Undergrad If air is a mixture, why don't the gases separate?
- AMan24
- · Replies 48 ·
Graduate Does this wave propagation problem make physical sense?
- hoomanya
- · Replies 6 ·