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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.
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Insights How to Avoid Breaking Physics With Your “What If” Question
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B What is the Conversion Factor for Hectacomb Sacrifices?
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Insights How to Better Define Information in Physics - Comments
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Physics FAQs: All Your Questions Answered
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List of credible physics journals
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Recent Noteworthy Physics Papers
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B Implosion
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I Increasing tone while mixing sugar in water
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I Why was a HAM radio license required to operate early lasers?
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I NASA is seeking a faster, cheaper way to bring Mars samples to Earth
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B Could you use the moon to reflect sunlight onto a solar sail?
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I Biot Savart law gives us magnetic field strength or magnetic flux density?
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I Why charge density of moving dipole is dependent on time?
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B I have a question about energy & ignoring friction losses
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I Effects of the centre of gravity on aircraft's stability
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B Mean Free Path And Ball Bearings In A Box
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B I have a question regarding temperature and the kinetic energy of molecules
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359
B Can Earth or any spherical object in space act as a particle collider?
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B What ever happened to Classical Unified Field Theory?
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I Why does my ceiling glow in the dark?
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B Why is My Homemade Cloud Chamber Not Working?
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I What Causes the Einstein - de Haas Effect in Iron Rods?
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B Exploring the equivalences between mass, time and length
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I How long would a tuning fork vibrate in vacuum?
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A From Nyquist plot to real conductivity spectra (sigma)
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I Gravitation In Higher Dimensions
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B What is currently known about fields other than gravitation?
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I What happens when an explosion occurs on the surface of the moon?
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A Can someone explain this statement on luminous transmittance?
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I How can concentration gradient field come into existence immediately?
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I Single-Slit Diffraction -- Deriving the relation for the minima
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B How would physics change if Planet 9 were a primordial black hole?
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I Superconductivity energy saved v Cooling/Heating energy loss
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B Quanta Magazine Video on Biggest Breakthroughs in Physics in 2023
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I Would aluminium foil increase copper tubing insulation?
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B Speed of light and Euler's constant
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Does the Universe have a finite number of fundamentals to uncover?
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A Effects of magnetic fields on material (Magnetic resonance)
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B Information sources and physics teaching
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I Lost Energy from a Reciprocating Piston
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A Correcting units from this physics paper?
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B How does mechanical motion start at the deepest, smallest level?
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I What is the Uncertainty in the Total Weight of a Collection of Similar Items?
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I Confused about unit conversion involving natural units
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I How to calculate incident light on surface with multiple orientations?
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A Unsolved Problems in Near Surface Geophysics
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I A question with regard to Hooke's and Kepler's laws
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I Maxwell's equations and the momentum of charge
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B Help with personal thoughts and observations in attempt to understand the fourth dimension better
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A Photon Bouncing during APD Dead Time in Autocorrelation Measurement
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Time crystals: They require energy added back into them?
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B Where the extra energy comes from?
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I Coherent two-photon lidar...does this mean lidar range is greater?
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B Wi-Fi Interference: How Microwaves Can Affect Your Wireless Connection
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B Why is my small Bi-2223 superconductor not levitating or locking above magnets?
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B Are toxins (poisons, forever chemicals, etc) eventually deactivated or neutralized by their own reactions?
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I How ICBMs get to their targets
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I Trying to understand the inner workings of a solar cell
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I Making LED bulbs safer: Health and LEDs
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B Is it possible to boil water by stirring it?
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I Why is not possible to store electric energy from a Lightning?
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B Can we use a permanent magnet and a copper rod to create an electret?
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B Why is the test charge always positive?
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I Exploring Link Movement in X-Y-Z Axis: How Does This Linkage Rotate and Yaw?
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I Restoring S.I. units to a Lagrangian in natural units
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I What can we scientifically measure directly?
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I De Broglie Wavelength at rest: λ = h/p = h/0 when v=0?
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B Which science communicator do you find to maintain the most accuracy?
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I Can the 3D Ising model be considered solved?
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I Questions about deriving generic equations/laws from specific equations/laws
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I Existential problem on Electromagnetism and the combination of Relativity and Quantum Mechanics
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B My strain gauge on a cantiliver beam is reading 0.040V before force is applied...
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I Looking for a unified expression for energy in rotating systems
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I How was electronics propagation delay measured historically?
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I Is "scalar wave" a legitimate term?
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I Flow rate calculation for laser cutting nozzles
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I Data collected from different devices: how to combine for analysis?
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I How can tomographic image resolution be obtained using wifi sensing and imaging?
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I The best way to keep an office cool in the hot summer
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B Need help with understanding time travel
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B Why is the electron the only particle dominating technology?
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B Is Time a Fundamental Force in Physics?
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B Neutrino physics -- What are the project goals for the Jiangman underground observatory (JUNO)?
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I Where can I find explanations about physics applications in real life?
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A SiC Vertical MOSFET channel length modulation
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B Moist air - does it rise or drop?
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I The multimeter is not displaying mv of strain gauge in circuit
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B Questions about the Universe: Positive & negative fields and effects
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I Mass, Energy and a compressed spring
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The effects of absolute zero temperature
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B Looking for help understanding string theory
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I Integrity of matter / space and time
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I A simple way to vizualize non-linear waves with a star Slinky toy
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B Frequency of EM Waves from Monitor for Black/White & Color Images
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B Where Do Electrons Go When a Battery Loses Charge?
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B Temperature of container, temperature of contents
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I Velocity of a given planet relative to the Galactic Center
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A Monte Carlo simulation for the classical isotropic 3D Heisenberg model
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I Is the position vector a real vector?
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I Entropy Real? End of Time? - Veritasium Video
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I Applications for negative radiation pressure?
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I Gravitational analog of electromagnetic force
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I How is the Reynolds number derived (is my derivation wrong)?
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B Why is the attenuation rate of wireless LAN signals particularly high in this one room?
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A Fourier coefficients relation to Power Spectral Density
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A Plotting Potential in Plasma Sheath
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Physics is the scientific study of the fundamental principles governing the behavior of matter and energy in the universe. It explores the nature of space, time, motion, forces, and the interactions between particles and fields.

Physicists seek to formulate laws and theories that describe the fundamental forces shaping the cosmos, from the microscopic world of subatomic particles to the vastness of galaxies. Divided into classical and modern physics, the discipline encompasses mechanics, electromagnetism, thermodynamics, quantum mechanics, and relativity.

Physics not only provides a framework for understanding the physical world but also drives technological innovations, shaping our comprehension of reality and inspiring advancements in various scientific and technological domains.

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