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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.
I Negative Kelvin? How Is It Possible?
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B Objects get smaller as they become more distant
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I What is the formal definition of a Universality Class?
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B Propagation of information/energy at different frequencies
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I CMB and the reference point for vacuum energy
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I Derivation of the General Boltzmann Equation and Its Validity
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I Density Siphoning? Solve Problem Now
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B What is the ΔEp = ΔEk + W equation used for in thermodynamics?
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I Experimental Demonstration of the Raman - Nath Effect
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I What's the restoring force, if there's a mass on a string.
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B How should I express this angle in words?
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I Designing a Car with Multiple Boxes: Free Body Diagrams
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B Normal Force on Extended Block: Physics Explained
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B Bose–Einstein condensate and Hadron Collider
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I Does anyone know about furnaces?
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B Is there any macroscopic example for the "mass excess"?
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I Does Pressure Multiplied by Volume and Volumetric Flow Rate Equal Force?
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I Can Infinitesimal Volumes Be Arbitrary Shapes?
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A Does an interface necessarily satisfy the KPZ Equation?
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B What would happen if you take a piece of a pulsar
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I Formulas describing fluid viscosity/compress-ability
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B Two waves moving at right angles go in circles?
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B Exploring Poisson's Ratio in 3D Rectangles
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I Exploring Tensors in Physics: Understanding Rank and When to Use Matrices
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B Feynman problem about a cylinder in a corner
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B Centrifugal Force in Angular SHM: Explained
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I Interpretation of complex wave number
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B Why is a black surface a better emitter of IR than a silvered surface?
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I What Are the Best Resources to Understand Resonant Tunneling Diodes?
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I Fluid flow through a pipe constriction - what would you feel
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B Node at a closed end and an antinode at a open end of a tube
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I Opening a Jar: Physics Behind Jar Lid's Resistance to Opening
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B How Did Eratosthenes Measure the Angle of the Stick?
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I Ion Conductors: Comparing Resistance to Copper at Room Temperature
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B A couple of questions about diodes and the depletion region
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I How to approach a more perfect blackbody?
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I Does conductivity of one metal impose limitations on another
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I Stream inside paraffin oil when exposed to high volage
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Insights An Integral Result from Parseval's Theorem - Comments
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I Is this book correct regarding waves in even dimensions?
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Understanding Poisson's Equation: General Forms
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I Scale Factors: Is a 10x Bigger Earth Possible?
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B How to calculate rpm of an aeolipile
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B Explaining Existence: Can We Convert Energy to Matter?
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I How to Calculate Fall Duration with Variable Force?
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I Blower/Fan Curve Basics & Questions
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B Question About Planck Scale Unit
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B Explaination of beta + decay in layman language
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B What Are the Benefits of LIGO & VIRGO's Gravitational Wave Detection?
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B Geiger's Gold Foil Experiment: Exploring Atom Structure
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B Why do softer brake pads stop a bike faster?
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B Understanding Normal Forces on Horizontal, Vertical, and Diagonal Surfaces
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I How does time add up to 1 second with infinite smaller amounts of time?
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B For those of us Who get stuck in a Hole
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B Coalescence of Drops: Exploring Kinetic Energy & Star Formation
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I How can I prove that P2 = density* g H
2
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I Does the open area of my window make a difference?
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A Predicting the vertical/horizontal/mediolateral force of a lungfish limb
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I Is the Output of a Half Wave Rectifier AC Current?
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I Air Breakdown With 980nm Laser: 1microsec/250mW
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B What is the True Dimension of Human Perception?
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I Energy transfer during uphill vs downhill running
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B Are There Clocks That Measure Real Objective Time?
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I Critical value of homoclinic bifurcation
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I How do I name a generalisation of the wave equation?
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B Calculate length of side of cube
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I How is TE selected as long or short?
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I Solve Velocity Equation: -g(horizontal distance)/sin(2theta)
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I Uncertainties and significant figures
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I Can someone explain this Energy Problem
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B Stupid question of forces from one who skipped Physics B
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I Processes that determine the color of fire
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B Blocks sliding down different lengths of ramp
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B Is it possible to use technology from a nervous system?
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I Error Propagation (Percentage) - sin(x)^2 / x^2
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I Stress Strain Curve: How Is It Derived & Tested?
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I Define inner product of vector fields EM
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I Solar cooker pots -- Does their color matter?
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I Compressed Nitrogen: Calculating Pipe Flow Time
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B Time Travel: Lorentz Invariance & Possibilities
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B Why are only some parts of this ice block cloudy?
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B Exploring the Possibility of Negative Mass: Implications and Limitations
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I Invariance of the laws of physics
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I Why Isn't My OLED Screen Image at Infinity in My HUD Setup?
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I Are Dimensions Real? | Questioning Space Dimensions
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B Is energy the same as matter in physics?
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B Dimensions of A and B are different, how to express?
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B Understanding dv/dt: A Beginner's Guide to Calculus Concepts
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B Gravity and how does the surface get it ?
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I Measuring Thickness and Refractive Index with Fourier Domain OCT
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I What is "unitary evolution" of something in physics?
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B Why when you run then kick a wall you feel an upwards push?
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I Self balancing stick based on flywheels
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How to measure net force based on diagram
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I Calculating the rate of rise of air
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B Can Cement Dust Cause Electrical Malfunctions?
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Open problems in mathematical physics
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B What is the utility of grounding in this Transistor case?
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I Another butterfly making tornadoes thread
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I How fast do you need to cycle to simulate bicycle tire inflation
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Physics

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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