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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.
Radiometric and Photometric units
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Exploring Escape Peaks from Gamma Rays
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A gravity graph is a kind of art "tool" that lets you draw nice geometric shapes
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1.5 cubic meters ice cube melting
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What are some free and legal video lectures for first year physics?
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What is the role of Slater determinants in quantum chemical methods?
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Kirchhoff's Three Laws of Spectroscopy
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I Laplace's equation in presence of a dipole (perfect or physical)
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I Can you put out a fuse (fire) with a laser?
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B Storing light and using it to propel an object
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I Infrared Photovoltaics: Powering Ham Radios & Cooling Earth?
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B Infrared Cameras -- Do they use a Lens to Focus?
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I Propagation of Angular Spectrum Code
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B Calculating the Angle Between Virtual Sources of Fresnel's Biprism
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B Can We Predict Fire Movement?
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B How many nuclear weapons are needed to make a wormhole?
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A Motorcycle, the force exerted upon from collision
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I Why does the effect linger with Glow in the dark?
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B Space, Reflection: See Earth's Past in Mirror?
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I Aviation Enthusiast's Tale of Ruining a Flight Sim
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I Lux-meter, candelas or lux, measuring nits in practice
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B Why don't guns kill the shooter?
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B Exploring the Potential X-Ray Emissions of Neon Signs
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B Why don't humans orbit the Earth?
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B Questions on magnets (multiple so I don't spam the forum)
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I Experimenting to Answer Research Q's
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I Reynolds Number and Turbulence: Why Does Increasing Density Affect Flow?
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I Exploring Energy in Astronomy: Kinetic, Potential & Mass?
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B Is Entropy the Key to Understanding the Big Bang and the Fate of the Universe?
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B Length, Time, and Velocity -- Which are fundamental quantities?
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I Work done by a gas in a heat engine which compresses a spring
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B Why are gravitons needed to explain gravitational attraction?
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I Trouble understanding the SI definition of 1 second
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I Higher Dimensional Time Implications?
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I Understanding iris electrode and iris doublet (Accelerator physics)
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I Mass & Density: Unpacking Feynman's Idea
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B Why can't gravity be just a form of magnetic attraction?
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A Feynman parametrization integration by parts
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I Alternate expressions for the uncertainty propagation
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I Standard deviation and count rate
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I Discussing Information Theory with non-scientists
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B Energy: Abstract Concept or Entity?
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I The Big Bang and the original size of Universe
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I Changing or breaking the most fundamental laws and symmetries?
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I What wavelength can penetrate soil to 15 feet?
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I What is meant by 'affine' model in physical sciences?
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I Explaining the Hierarchy problem for beginners
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I Are there any inexpensive spectrometers?
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B Can Push Travel Faster Than Light?
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B Are Electrons the Building Blocks of Our Universe?
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I Is anything in the physical world infinite?
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B What sort of can would roll the fastest?
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B Why are things the color they are?
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B Distance between two points on Earth doesn't increase with altitude?
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B Does Light Energy contain Heat Energy in a large scale?
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I Propagation of uncertainty with some constants
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I What does "upright" mean in geometric optics?
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A Structural coloration of a zeolite monolayer
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B Why exactly do we need the gravitational constant?
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B A question about why gravity is only attractive
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A SO(3) group, Heisenberg Hamiltonian
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I Partition function of mixture of two gases
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B Can You Use a Rubber Bracelet as a Buoyancy Reference for Freediving?
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I Help Needed for Lens Selection for Fiber optics
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I What happens to photonic molecules?
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B Can a fireplace be used as a fallout shelter?
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B Can Inductive Reasoning Explain the Movement of Strings on Spools and Bikes?
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I Permittivity/Permeability, the speed of light, and the meter
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B Questions on how helicopters fly
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B Can Himalayan Salt Dissolve in Candle Wax?
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B 4 Questions About Lenz's Law Experiment
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I How Does the Angle at P1 Change Over Time Until the Object Falls?
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I The Job of the Demon: Compressing Gas Without Work
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I Rigid body physics (machine learning environment)
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B Andy Meadowcroft - Introduction (and a question about nuclear fusion)
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I Looking for a Comprehensive Explanation of Natural Units
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I Radio waves and height gain in fading zones
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I Understanding Tensors & Knot Theory in Physics
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I Rotational Orientation of Monatomic Gas: Angular Momentum Effects
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B Would a fall from 53 centimeters break the glass from a window?
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I Unbalanced forces acting on a ball at maximum altitude
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I Why in an electric circuit with only a generator the resistance R=infinity?
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I Why does light travel slower in water?
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I Application of failure criteria to viscoelastic materials
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I How does the Poynting vector factor into a normal circuit?
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I Getting a sauna to a certain temperature - faster with more rocks?
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I Usage of First Order Elastic Constants in Soft Body Equations
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B Why does a DC motor have a restricted speed?
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B Work and Friction: How Does Fxv Apply?
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B Create an artificial eddy/tornado
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I Is There a Connection Between Rainbows and Holograms?
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B Oberth effect on a slope - experiment idea
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I Do you have an example of a truly random phenomenon?
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I NMR Remote Sensing: Does US Army Detect Buried Weapons?
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I Chain on a slope remains still if its end points are of equal height?
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B Beam of air: Extending the range of a fan
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A Meaning of density of microstates in phase space
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B Space propulsion without mass ejecting
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B Could satellite be geo-stationary away from equatorial plane?
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I Confirm 6ft Tall Boy Throwing Tennis Ball 🎾 in Gym
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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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