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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.
LeBron James' Verizon science experiment
  • Brutonos
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Undergrad If you were to perform a linear regression of log10(B) vs log10(x)....
  • Ekwia22
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High School Visual proof of being at altitude?
  • Alfreds9
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Collaborate with a Physicist: Finding Solutions to Complex Problems
  • gva
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Graduate Anyone on PF involved in complex systems research?
  • StatGuy2000
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Graduate Contact Angle of Immiscible Liquids in a Tube
  • AqibH
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Undergrad How Do Waves Influence the Movement of the Northern Lights?
  • RubinLicht
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High School How many points can be found in the surface of the Earth?
  • IuGran44
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News The late Prof Sir Tom Kibble awarded Isaac Newton medal
  • Jonathan Scott
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High School Why Is My Chair Moving on Its Own?
  • Knucklehead
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Undergrad How to write the unit vector for the spherical coordinates
  • unicornflyers
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Undergrad Is Sonoluminescence Possible with Liquid Hydrogen?
  • smilodont
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Undergrad Can You Explain: Why Is It One Sec?
  • AyoubEd
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High School Is a scientific paper a theory or discovery? Or only a paper?
  • ricky33
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Undergrad How to Calculate the Area of Hysteresis?
  • SDRFG
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Graduate Jobs websites for theoretical/computational physics
  • sjabari
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High School Solar cell educational graphics - review for possible errors
  • edutainer
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High School What is the source of this intriguing natural noise diagram?
  • houlahound
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High School Understanding the Equations and Units
  • Si1entShad0w
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Undergrad How to Convert Cgs to SI Units for Flux and Energy Values?
  • SorenaJ
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Graduate Can Buoyancy Create Free Energy?
  • Justin Shearer
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Graduate Is there such a thing as true darkness?
  • phaeton
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Undergrad Floating Strawberry: Real or Fake?
  • Maike
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Undergrad Is there any absolute proof that photons exist?
  • Andew
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High School How Do I Linearize My Negative Parabola Graph?
  • Alessandro Angeletti
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Graduate Are there instances of Simpson's Paradox in Physics?
  • RogerWest
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Graduate Hammer Effect in Pipelines: Packing, Attenuation & Flow
  • Mikealvarado100
  • · Replies 11 ·
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High School Can I Test Lightboxes for UV Rays?
  • Frozen
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High School Why Do Some People Conduct Electricity and Others Don't?
  • beatfrequency
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Insights Interview with a Physics Mentor: Nugatory - Comments
  • Greg Bernhardt
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High School Difference Between dB and dBA Scales Explained
  • Hannah7h
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High School Voyager 1: How Long Can We Communicate?
  • Lars Hansen
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High School Can Antimatter Be Trapped in Thunderstorms?
  • Ananuk
  • · Replies 11 ·
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High School Question regarding JJ Thompson's Experiment
  • Dexter Neutron
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Undergrad Understanding Sinusoidal Waves: Motion and Displacement Explained
  • toesockshoe
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High School Does anyone know what this picture on an AP Physics t-shirt means?
  • Hunter Hammonds
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Undergrad Explain the formula, rpm unit conversion
  • avito009
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Graduate Neumann boundary conditions in calculus of variations
  • ShayanJ
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Graduate René Heller's SETI Decrypt Challenge
  • collinsmark
  • · Replies 8 ·
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High School How Does This Experiment Help Us Understand Vibration?
  • john c3na
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Undergrad Hopelessly Confused (Strange Light Distribution)
  • Braeden Nason
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High School How Many Layers of Aluminum Foil Are Needed for a Resonant Cavity?
  • kiutukri
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High School Has any experiment actually measured PI to many places?
  • squirrlmcduckles
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Graduate Progress in measurement of gravitational constant?
  • exponent137
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Undergrad Is Thermodynamics the hardest science?
  • Uchiha Madara
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High School Can someone explain attraction using the 'two people throwing balls' analogy?
  • Deepak K Kapur
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Undergrad What Causes Patterns in Water Droplets with Sound Waves?
  • iDimension
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Undergrad Why Do Some Clouds Have a Rainbow Hue?
  • rootone
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Undergrad What is the correct terminology for intensity and effort in exercise?
  • Sean Jackson 01
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High School Unraveling the Science of Sub-Woofers
  • ryan gonzalez
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Remembering J. D. Jackson: A Tribute to a Physics Legend
  • Telemachus
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High School Can a Bridge Sing? Solve the Mystery!
  • DaveC426913
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Graduate Two dimensional plane equal absolute nothing
  • Mohd Abdullah
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Photo Contest - Gravity (4/30-5/13)
  • ZapperZ
  • · Replies 20 ·
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Graduate Explaining 'Attenuation' in Water Hammer in Pipelines
  • Mikealvarado100
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High School Question About Density: Lower Mass, Same Volume?
  • Sundown444
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Undergrad Can a Sprayed Metal Roof Act as a Cooler and Radiator for a Room?
  • georgemdn
  • · Replies 11 ·
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High School What is the basic science behind fire?
  • Jakob Olason
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Undergrad Understanding Units: Multiply vs Divide
  • polaris90
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Undergrad Is It Possible to Create a Natural Vacuum in a Cavern Using Clay and Water?
  • Liam A
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Undergrad How Much Does High-Speed Flight Affect Aging?
  • Beneer
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Undergrad How can novice scientific enthusiast get ideas disscussed?
  • Salah Saad
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High School Does Methane Gravitationally Differentiate in Air or Mix with Fluid Dynamics?
  • Praestrigiator
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High School Question about the states of matter
  • Sundown444
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Graduate PET scanners -- SNR versus NECR....
  • BobP
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Undergrad David McMahon: The Master of Demystifying Science
  • Demystifier
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High School Why is there no prefix for 10^5,10^-5 and 10^4 and 10^-4?
  • ppppparker
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Insights Interview with a Physicist: Sean Carroll - Comments
  • Greg Bernhardt
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High School Traveling microscope vs vernier calliper
  • ryanuser
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High School Strange Phenomena when the Sun is low on the horizon?
  • gary350
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  • Poll Poll
Current physics PhD students & postdocs: area of research
  • StatGuy2000
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Undergrad What are some ways to 'mold'/change the shape of a flame?
  • zogeta
  • · Replies 6 ·
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High School Vague definition of the word molecule
  • n124122
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Graduate Why Retraction? New Journal of Physics Investigates
  • PFfan01
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Undergrad Why is the standard deviation the error on the singular meas
  • Soren4
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High School Relative Humidity 10 kilometers (6.2 miles) away....
  • cube137
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High School Amplitude Modulation: Unique Frequency & Bandwidth
  • Tulio Cesar
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Undergrad Is it Possible to Create a Device that Neutralizes Loud Vehicle Speakers?
  • Michael Dugger
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High School Parallex Method: Struggling in 11th Class?
  • rtd
  • · Replies 8 ·
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High School What Causes the Unique Sound of Thunder During Storms?
  • Edison Bias
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High School Solving Confusion with Waves in Physics
  • ashsully
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Undergrad Is Pascal's Law Wrong? Debunking the Myth of Equal Pressure in Fluids
  • physea
  • · Replies 20 ·
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What is the answer to this physics riddle?
  • micromass
  • · Replies 31 ·
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High School Finding a Gas for Physics Experiment
  • Intle
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Insights Why Won't You Look at My New Theory? - Comments
  • PeterDonis
  • · Replies 228 ·
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Undergrad Fourier transform sum of two images
  • BobP
  • · Replies 15 ·
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Graduate Can infinity be observed in the real world?
  • nnope
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High School Debunking Alleged proofs against modern science
  • Tegewaldt
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Undergrad How Aristarchus found moon's diameter?
  • prashant singh
  • · Replies 11 ·
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Undergrad Oscillations and Waves in Fluids
  • Tazerfish
  • · Replies 1 ·
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Undergrad Eratosthene's explanation of the sun's ray
  • prashant singh
  • · Replies 9 ·
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High School Does "nothing" have a meaning in physics?
  • houlahound
  • · Replies 26 ·
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High School IF north pole becomes the south pole....
  • @PK nd
  • · Replies 37 ·
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Insights Secondary Forces Explored - Comments
  • klotza
  • · Replies 6 ·
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6
Physicists/Mathematicians: Night Owls or Morning Larks?
  • DrSuage
  • · Replies 6 ·
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News RIP Sir David Mackay: Physicist, Mathematician, Author
  • StatGuy2000
  • · Replies 1 ·
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Undergrad A.P French equation Question -- singing wine glass experiment
  • NeedHelpBro
  • · Replies 1 ·
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Undergrad What Are the Names of These Four Equations?
  • Pual Black
  • · Replies 4 ·
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Graduate Reducing standing waves with phase randomization
  • Jaryd Miles
  • · Replies 5 ·
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5
Insights Interview with a Physics Mentor: PeterDonis - Comments
  • Greg Bernhardt
  • · Replies 7 ·
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