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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.
Undergrad A couple questions about gravity
  • fezmaster
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High School Join two broke pieces of the same material
  • scientifico
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High School What happens to a fan inside a system without air?
  • KillerX
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High School Should the Rear Wheel Be Larger on Cars?
  • ashishsinghal
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10
High School Physical Quantities: Distinguishing Scalars & Vectors
  • moatasim23
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An observation regarding pop sci books
  • robertjford80
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Graduate Should luminous intensity be a fundamental unit?
  • swampwiz
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High School Air Density vs Height above Earth
  • Philosophaie
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High School When anti-matter and matter collide are they destroyed?
  • Karimspencer
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Undergrad Is our solar system in danger from the galactic rift?
  • mattbatson
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High School What Is the Best Website for Beginners to Learn Physics?
  • herbally
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Atoms: Do They Die & Where Does It Lead?
  • johnebgood108
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Undergrad I am confused with this equation derivation
  • rickp
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Old Physics Apparatuses - Identification Help
  • Adventurer
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Small Liquid CO2 Manufacturing Machine?
  • berkeman
  • · Replies 8 ·
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Heading towards what ? and when will reach the destination ?
  • Zubeen
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Graduate Sympathetic Resonance: Rigorous Analysis & References
  • PhilDSP
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High School How Is Solar Panel Efficiency Calculated?
  • Miike012
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Undergrad An Astoundingly BAD Physics News Report
  • ZapperZ
  • · Replies 12 ·
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12
Undergrad Mars-One: People living on Mars in 2023
  • lvlastermind
  • · Replies 63 ·
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Need logical explanation for strange event
  • Illini70
  • · Replies 13 ·
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Graduate Is Antimatter a Misnomer?
  • Alex-NL
  • · Replies 36 ·
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Undergrad Power of the Pendulum - Proof of Ultra-Efficiency?
  • zoobyshoe
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Graduate Why would someone decorate their mausoleum with complex equations and symbols?
  • MSFerguson
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Undergrad Finding Uncertainty of Average Values
  • marvolo1300
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9
Does michio kaku hate leonard susskind?
  • robertjford80
  • · Replies 18 ·
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See the Transit of Venus Live Here
  • Drakkith
  • · Replies 28 ·
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Undergrad Why is the ember of a cigarette harder than the non-burning tobacco alone?
  • BrainSalad
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Venus - Transit of VenusWhat did I capture during the recent transit of Venus?
  • CaptainBlack
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Undergrad Is Anti-Gravity Levitation Possible for Human Transport?
  • Robin07
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High School Today and tomorrow (5/11 and 5/12) an extremely large group of
  • Andy Resnick
  • · Replies 11 ·
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High School What Causes the Blue Color of Sea Water?
  • moatasim23
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High School Want to know of any easy physics book for beginners
  • brandontod97
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5
High School Storing Dry Ice in a Freezer: Is it Safe?
  • MACHO-WIMP
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Graduate Unit of Measure of Exponentiated Item
  • Steve Zissou
  • · Replies 16 ·
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Undergrad Question Regarding Operational Amps
  • ZxcvbnM2000
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Graduate H2O Vibrational Transitions (molecular as opposed to election) Why ?
  • karen_lorr
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Physics Forums getting some love at MSN
  • Norman
  • · Replies 13 ·
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High School WHat is the uncertainty in a metre rule?
  • mutineer123
  • · Replies 59 ·
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Undergrad Possible webpage title: Mars and Earth Warming: Fact or Assumption?
  • charmedbeauty
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High School What exactly is a wave and how does it propagate?
  • RadiantL
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High School 12V Lead Acid Battery Charging & discharging rate?
  • kamarn
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Graduate Expected time of arrival with uncertainty
  • username27
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Setting up a Physics revision site
  • Jambon
  • · Replies 22 ·
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Undergrad What is the impact of speaker direction on noise levels?
  • gmahler
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Undergrad Is this effect common in all fields of physics?
  • DreamChaser77
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High School What are Chords? What is the smallest unit in physics?
  • Mason_Free
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Graduate Fast Fourier Transform in Real Time
  • olbert
  • · Replies 8 ·
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Undergrad Distribution of molecules throughout the atmosphere
  • charmedbeauty
  • · Replies 7 ·
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7
Experiment finding particles travelling faster than light
  • find_the_fun
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High School Understanding Reverse Osmosis Water Filters: Fact or Fiction?
  • chell
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Graduate How to challenge a well established theory?
  • abhijitp88
  • · Replies 35 ·
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Graduate Unravelling Mysteries of the Universe: Researching for a Book
  • thevisi0nary
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Physics is copies idea from sci fi, i dont think show
  • tiantsai
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High School Question about battery amp hours
  • LBrandt
  • · Replies 23 ·
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Undergrad MARVEL's fictional Adamantium in real life?
  • Garrus Vakari
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High School Waves - Matter is transported or not?
  • tcharbuck31
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Why Are Physicists Shy & Antisocial?
  • Casco
  • · Replies 51 ·
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Undergrad Accoustic wave propagation and effects in a tube
  • allblowdup
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Graduate Mixing He, O, Ge, N and U: What Could Happen?
  • chrisan
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Undergrad What is the difference between dot product and cross product in physics?
  • physics kiddy
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5
High School Creating an Egg-Carrying Device Without a Parachute
  • CameronG
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High School Sig Figs: Adding Accurate Lengths with Fewer Decimals
  • Excalibur1152
  • · Replies 13 ·
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Undergrad Carrying Uncertainty in Math: A Paradox?
  • t6x3
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Undergrad Energy - Can energy be negative?
  • Vinay R Hegde
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Undergrad Magnetic-like resistance between palms
  • Inertigratus
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High School Why Can't Vernier Calipers Measure Less Than 1 cm Accurately?
  • Seniour Baloc
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High School Why candle reduces cigarette smoke odor?
  • pixel01
  • · Replies 12 ·
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High School Help Choose Physics Topic for AP Class Presentation
  • xpaulinabearx
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Undergrad Determining Mass of Individual Objects in Bags - Oil, Candy, Millikan?
  • zeja7
  • · Replies 7 ·
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Undergrad Can You Determine an Epicenter in a Classroom Seismic Activity Simulation?
  • Apple96
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High School Do Vibrating Systems Only Relate to Sound Waves?
  • jayadds
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Undergrad Need help on explanation of Jiskoot sampler.
  • vietdieu
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What objects can I use to improve my ball curving skills?
  • ste20man
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Graduate How to Locate Original Quantum Mechanics Articles by Bohm and Dirac?
  • cragar
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High School What's the difference between entrainment and resonance?
  • quantum1234
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Graduate Validity of physics or any result of it
  • DarkFalz
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High School Anti Matter - Does it exist on Earth?
  • kevinsetiono
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High School Can we see nuclear explosion from orbit?
  • Chitose
  • · Replies 17 ·
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Moving Airplane; Strongman Competition
  • leroyjenkens
  • · Replies 1 ·
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Graduate Can Magnetic Super Fluids Create Gravity Waves?
  • cragar
  • · Replies 10 ·
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Graduate How Can Catalysts Enhance the Recombination of Oppositely Charged Ions?
  • CloudChamber
  • · Replies 4 ·
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Undergrad Standing waves on a circular plate.
  • ImaLooser
  • · Replies 2 ·
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Graduate Practical Physics: Esoteric Parallels
  • Pkruse
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Greatest physicists of all time alive and dead
  • KeplerJunior
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High School Bermuda Triangle: Unsolved Mysteries & Gravitational Forces
  • azlan naeem
  • · Replies 7 ·
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Undergrad How safe is a digital-TV repeater?
  • logics
  • · Replies 25 ·
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Undergrad The common practice to not put equations in pop science books
  • robertjford80
  • · Replies 33 ·
2
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High School The Scientific Method: Why is it Important?
  • Drakkith
  • · Replies 19 ·
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What Are the Best Physics Websites?
  • dlivingston
  • · Replies 9 ·
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High School Do Thoughts Have Physical Mass?
  • AbsoluteZer0
  • · Replies 2 ·
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High School Myth or Bust: Tint shatters sun roof
  • flossurteeth
  • · Replies 3 ·
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3
Revisiting Einstein's Biggest Blunder: Uncertainty and its Impact on Science
  • ilhan8
  • · Replies 8 ·
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High School Contribution to physics- who should be included?
  • charmedbeauty
  • · Replies 6 ·
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6
High School What Physics Experiment Can Combine Computers, Soccer, or Music?
  • Drumz
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Graduate How Does the Equation F→∏ A l Z Relate to Fundamental Physics?
  • phys-if
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High School Waves can cause the displacement of an object.
  • Karimspencer
  • · Replies 9 ·
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Graduate J.J. Thomson's cathode ray experiment
  • jcortez91
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2
Undergrad Why Doesn't Gravity Act as a Restoring Force in Wave Pulses?
  • Sammy101
  • · Replies 6 ·
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6
High School What generate the Gravity force from mass?
  • oem7110
  • · Replies 9 ·
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