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
Undergrad Why does water care about the density of objects on top of it?
- yosimba2000
- · Replies 12 ·
So how many of us want to be like A. Einstein, I. Newton,etc
- victorhugo
- · Replies 12 ·
High School How Can Math Help You Understand Gravity?
- Sbreakdown
- · Replies 1 ·
Undergrad Why Is Gravity Always Attractive?
- petrushkagoogol
- · Replies 39 ·
Graduate What exactly is being shown on the blackboard here?
- swampwiz
- · Replies 11 ·
Insights Fun with Self-Avoiding Walks - Comments
- klotza
- · Replies 15 ·
Undergrad How to Fold Data Points to a Period
- Silviu
- · Replies 1 ·
Undergrad Is it true that physicists have their best ideas in 20s?
- td21
- · Replies 3 ·
Undergrad Can plotting corrected values help determine a more precise E_g?
- Kara386
- · Replies 7 ·
Undergrad Frequencies of standing waves in a straw
- steven george
- · Replies 12 ·
Identifying optical device with green target lines and ink pens
- Eecinee
- · Replies 4 ·
Good Books on Physicists: Biographies of Famous Scientists
- nmsurobert
- · Replies 8 ·
Undergrad What happens to energy when it has nowhere to transfer?
- Agave tequilana
- · Replies 10 ·
High School Digging a hole through Earth's mantle, avoiding the core
- NewToThis
- · Replies 20 ·
Undergrad Pascal´s Principle in Compresssible Fluids
- DaTario
- · Replies 10 ·
Undergrad On liquid oscillation excitation
- Jiwon Han
- · Replies 3 ·
Undergrad The influence of humidity when creating a vacuum
- Karido
- · Replies 8 ·
Interesting Lecture by RP Feynman at Cornell
- jedishrfu
- · Replies 1 ·
High School Is there such a thing as non-mechanical transport
- manicaltransport
- · Replies 11 ·
High School Is the Large Hadron Collider large?
- Beanyboy
- · Replies 14 ·
High School Why do water waves not undergo a phase change when they hit a fixed wall?
- Clara Chung
- · Replies 1 ·
High School The lazy time in sofa to learn physics?
- edephysic
- · Replies 9 ·
High School Why Do We Treat Units Like Variables in Physics?
- Biker
- · Replies 10 ·
Who Won the 2016 Ig Nobel Prizes for Physics and Chemistry?
- jtbell
- · Replies 1 ·
High School What would happen if nothing was like it is
- Arthur Lopes
- · Replies 2 ·
High School Why can't one metre be more than one metre?
- jomsur
- · Replies 4 ·
Why Are There So Few Engaging Physics Books for the General Reader?
- Beanyboy
- · Replies 28 ·
High School What is a choke station in fluid pipelines?
- Mikealvarado100
- · Replies 1 ·
High School Calculating error when constant is divided by variable
- akzo
- · Replies 3 ·
Undergrad Are km/h/s and km/s/h the same unit of acceleration?
- Kishwar Khan
- · Replies 5 ·
High School Does determinism rule out free will and is gravity a spacetime distortion?
- layman wannabe
- · Replies 9 ·
High School Asteroid Binding Energy: E=mv^2?
- Tris Fray Potter
- · Replies 8 ·
High School Why physical quantities need a unit?
- abbas14
- · Replies 13 ·
Undergrad Can we accurately represent an analog universe with digital representations?
- GregoryC
- · Replies 10 ·
High School Difference between distance in physics and math
- Arif Setiawan
- · Replies 5 ·
Undergrad What is physicial interpretation of deviatoric strain rate
- Atr cheema
- · Replies 8 ·
High School Understanding Probability and Fairness in Coin Tosses
- gilishaky
- · Replies 4 ·
High School Discrete definitions of Physics Standard Units
- Stephanus
- · Replies 5 ·
Undergrad Solving a Second-Order Wave Equation
- KFC
- · Replies 8 ·
High School How can we see boats beyond the geometric horizon at the beach?
- jfoldbar
- · Replies 31 ·
Undergrad How to produce graphene beyond the sticky tape method
- billy k
- · Replies 1 ·
High School What is the deepest hole in the world?
- Newtonfalls
- · Replies 4 ·
High School Detecting Smartphone Waves Using Toy - VIDEO
- Newtonfalls
- · Replies 4 ·
Graduate How does anti-gravity spray work?
- Newtonfalls
- · Replies 2 ·
High School High School Physics Presentation Ideas?”
- bobcheese
- · Replies 1 ·
High School Is panchromatic imaging the same as black and white?
- senmeis
- · Replies 3 ·
Wanted: specific youtube science series, forgot who made it....
- doggonemess
- · Replies 4 ·
High School Are there any researchers on the concept of time?
- Jonny Cruz
- · Replies 1 ·
High School FYI Webcast from CERN on 9/30/16 for HS students and laymen
- fresh_42
- · Replies 1 ·
Undergrad Difference between vectors in physics and abstract vectors
- Mr Davis 97
- · Replies 11 ·
Undergrad James Cronin and CP violation in matter and antimatter
- robphy
- · Replies 1 ·
Undergrad Submitting papers to Physical Review Letters
- izzi wekwek
- · Replies 5 ·
Graduate Can Noise Cancelling Theory Be Used to Send Secret Messages?
- quicksilver123
- · Replies 1 ·
Graduate Data Analysis: consistency of e.g. two measurements
- niteOwl
- · Replies 2 ·
Is there physics knowledge hidden to public domain?
- jonjacson
- · Replies 10 ·
Undergrad Are Pagers More Reliable Compared to Phones?
- Alan Arqueza
- · Replies 4 ·
Undergrad Multichannel analyzer to computer
- Rajini
- · Replies 2 ·
High School What does it mean when centres of charge coincide?
- AmKo3
- · Replies 2 ·
Undergrad Pinwheels for Wind turbines? In class, pinwheels proved most
- sirrods
- · Replies 2 ·
Undergrad Why equal volumes of diferent gases have the same number of molecules @ STP?
- Rashik
- · Replies 7 ·
High School Lenovo Thinkpad E460: Ideal Laptop for Research and Code Writing
- RobosaurusRex
- · Replies 2 ·
High School Why we take the least # of significant digits when multiplying?
- HuuChi1778
- · Replies 10 ·
High School Why Does Matter Outweigh Antimatter?
- Prasun-rick
- · Replies 7 ·
Undergrad Does anything ever repel gravity?
- Prasun-rick
- · Replies 6 ·
Graduate How to explain table solidity without quantum mechanics
- bluecap
- · Replies 3 ·
High School Is Time a Dimension or a Measure of Movement?
- mmmchicken
- · Replies 7 ·
High School What dimensions aren't geometry based?
- mmmchicken
- · Replies 8 ·
High School For oscillations, why do we use angles in waves and oscillat
- Cr4zyM4tt
- · Replies 1 ·
Undergrad How Does Acceleration Affect the Doppler Effect in Moving Sound Emitters?
- shawn9521
- · Replies 8 ·
Depth of fields in Physics, Cosmology etc
- narrator
- · Replies 4 ·
Undergrad Understanding Sonic Booms and Light Speed Phenomena
- Samia qureshi
- · Replies 6 ·
Graduate Four quadrants of pump function in transient analysis
- Mikealvarado100
- · Replies 13 ·
High School How can I control the amount of air vs water in an inverted bottle dispenser?
- Eddie Matos PhE
- · Replies 11 ·
Undergrad Is it possible to image individual air molecules?
- Hunter235711
- · Replies 6 ·
High School Photo Contest - Intro Physics (7/23-7/29)
- ZapperZ
- · Replies 4 ·
High School Red pulsing light moving erratically around a star in the sky
- Shadowkat678
- · Replies 13 ·
High School Is Gravity Absent at the Earth's Core?
- NewToThis
- · Replies 1 ·
Undergrad Where can I find a chart of units and their concept symbols?
- Paladin
- · Replies 17 ·
Undergrad Fun question: Can this fish swim?
- Einey77
- · Replies 42 ·
High School Meaning of physical quantities and division
- Pilpellon
- · Replies 7 ·
Undergrad I need some *Rust* is iron oxide rust?
- gary350
- · Replies 19 ·
Undergrad Capillary Action: Overcoming Capillary Force with Ions
- imbelhassen
- · Replies 5 ·
Undergrad GPS Data Availability - Positions, Clock Readings etc.
- Matter_Matters
- · Replies 6 ·
High School Where can i find a legend of all of the symbols used in phys
- t906
- · Replies 2 ·
High School Doppler effect/ both moving same direction
- QuarkDecay
- · Replies 6 ·
Graduate What do you think about time travelling.
- parshyaa
- · Replies 22 ·
Graduate Tom Kibble, Physicist .... Dies at 83
- diogenesNY
- · Replies 2 ·
Graduate Is Self-Study Outside Academia Hindering My Progress in Physics?
- thefurlong
- · Replies 2 ·
Ready to Win with a Haiku? Physics Poetry Contest Starts Now!
- Greg Bernhardt
- · Replies 17 ·
Undergrad Einstein Fact-Check: Debunking Myths & Fun Survey
- DiracPool
- · Replies 2 ·
High School Guidance on Physics Extended Project Qualification
- TomPhysics
- · Replies 1 ·
Undergrad What is the second most famous dispersion relation in physics?
- DaTario
- · Replies 13 ·
My Battle with the Windy Rhode Island Coastline
- Davephaelon
- · Replies 3 ·
High School Is it allowed to use graphing calculator in IPHO
- rashida564
- · Replies 7 ·
Undergrad Suggestion for presentation topic
- Samia qureshi
- · Replies 2 ·
Undergrad What does this Monge parameterization boundary condition mean?
- lucdj3
- · Replies 5 ·
Photo Contest - Crystal Lattice (7/9-7/15)
- ZapperZ
- · Replies 3 ·
Where can you buy a cheap liquid nitrogen dewar?
- chasbissell
- · Replies 7 ·
Vibration of wine tanks using music
- wyckmans
- · Replies 4 ·
Undergrad Why does the Doppler effect depend on whether source or observer moves?
- DaTario
- · Replies 14 ·