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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 Atmospheric hazing on an infinite plane
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Undergrad Why E=mc^2 is different from E=1/2 mv^2?
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Undergrad Is gravitational prospecting pseudoscience?
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Undergrad General definition of spatial dimension?
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Undergrad What purpose does the delta notation serve in this context?
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Undergrad Summation convention with expressions containing parentheses
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Undergrad Why do the signs alternate when using Gauss' law for gravity?
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Undergrad Why don't humans glow in the dark?
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Undergrad Dimensional analysis involving partial derivatives
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Undergrad Resultant of Different Permittivity substances
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Undergrad Compression of gases that liquefies
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Undergrad What Causes Thunder? New Research Answers
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Undergrad Time harmonic case of Gauss's Law
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Undergrad How Do Geometrical and Physical Symmetry Differ in Objects?
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Undergrad How do we justify "Natural" Units
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Undergrad Millikan's Experiment: Observing Vibrating Oil Droplets
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Undergrad Was the recent ISS leak imminently dangerous?
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Undergrad Can Schrodinger's cat apply to things other than alive/dead?
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Undergrad Rocket-Jet Hybrid, Rocket + Ramjet
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Undergrad How is Solder Made? Learn the Process & Its Benefits
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Undergrad Time reversal symmetry in physics
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Undergrad Musings, seeking opinions about the nature of time
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Undergrad Source of Energy in a Field of Forces
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Undergrad The air parcel expands as it rises inside a pipe
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Undergrad Solving Planar Fluence: Ratio of Electrons per cm2
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Undergrad Significant figures and uncertainty in measurements
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Undergrad 3D coordinates vector calculation
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Undergrad Is there so-called "optimal traction" for vehicles?
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Undergrad What chemicals inside a hearing aid battery make it explode?
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Undergrad Is Non-Commutative Geometry the Key to a Discrete Model of Spacetime?
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Undergrad Is there a simple explanation for Fermi-Dirac statistics?
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Undergrad If we teleport 1mm^3 of a neutron star outside it what hapens?
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Undergrad Questions on Debye's Model of solids
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Undergrad Fermat's Principle: Is Light Travel Time Min?
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Undergrad PMT Sensitivity Explained: Understanding Photomultiplier Tube Sensitivity
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Undergrad Description of physical system help
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Undergrad Spinning bicycle wheel in air and letting it go
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Undergrad The amount of time it will take to melt ice
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Undergrad People pulling rope, one in a perpendicular direction
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Undergrad Can Infrared Photons Enter Nanotubes?
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Undergrad Two blocks connected with a fragile rope
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Undergrad Understanding Gauss's Law: Where Does the Argument Break Down?
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Undergrad Force acting on a stationary object in a flowing pipe
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Undergrad Physics of colors and our perception
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Undergrad Is E=mc^2 Explained Correctly?
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Undergrad How to measure the surface area of an arbitrary 3D object
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Undergrad Gauss' law applied on a four-dimensional surface
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Undergrad The role of capillaries in a dilution refrigerator
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Undergrad Translational Symmetry: Effects on Laws & World
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Undergrad Calculating E Field Inside Cylinder of Finite Height
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Undergrad Does Physics Allow for a Time Component in Vector Quantities?
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Undergrad Why are the laws of physics what they are?
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Undergrad Frozen fruit aggregates in hot porridge
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Undergrad How do telescopes allow us to see light sources millions of light years away?
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Undergrad Do we "lose" information when viewing objects at a distance?
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Undergrad Tensor Equations: Invariance Across Different Reference Frames?
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Undergrad Babies Upside Down: How Buoyancy Protects from Gravity
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Undergrad Dust Accumulation on Fan Blades and Elsewhere
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Undergrad The Mystery of Room Coolers During an Unusually Hot Summer
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Undergrad Is Energy Fundamental or Derived?
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Undergrad How can I represent a stochastic process in 2D?
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Undergrad Can the Parker Solar Probe Be Cooled by Radiating Heat into Space?
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Undergrad How are Bamboo Copter Toys Stabilized?
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Undergrad Is this just a normal fluorescence of glass molecules?
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Undergrad Why do the intake spikes on the SR71 Blackbird point down and inboard?
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Undergrad What does the total time derivative of a function signify in Noether's Theorem?
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Undergrad Fourier transform -- what physical variables am I allowed to transform between?
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Undergrad Which object will hit the surface of a planet first?
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Undergrad Dropped objects hitting the ground at the same time?
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Undergrad How to determine the center of gravity of a satellite
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Undergrad How to Calculate Power of a Turning Shaft?
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Undergrad Force exerted by a rope wound around a disk
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Undergrad Why Am I Getting a Reading of 0.3 Amps When Connecting AA Batteries in Parallel?
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Undergrad Emmy Noether's Theorem: Learning STEM for Beginners
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Undergrad Can tiny gas bubbles cause discomfort in body cavities?
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Undergrad Looking for a cheap digital scale with accuracy <1 g
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Undergrad Finding the max angle of a longboard deck before the wheels slip
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Undergrad Could a Smoke Detector Serve as a Sail for Spacecraft Propulsion?
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Undergrad Understanding Delta V = Ed: Validity and Implications for Electric Potential
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Undergrad The Role of Doping and Electric Fields in P-N Junction Formation?
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Undergrad Designing Rehabilitation Equipment for an Upper Limb (arm)
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Undergrad Can Diagrams be Used as Circuits in Explaining Sensor Operations?
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Undergrad Transfer of information via a rigid body?
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Undergrad Can someone explain this phenomena?
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Undergrad "Undo" Second Derivative With Square Root?
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Undergrad Predicting the decay time of a resonant bandpass filter
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Undergrad What Radial Forces Are Created When Pulling a Wrapped String?
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Undergrad Liquid metal slip/rotary contact
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Undergrad Poynting's theorem in Griffith's
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Undergrad How Does a Pressurized Tank Empty Over Time Through a Hole?
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Undergrad Are Qin and W equivalent in the Rankine and Otto cycles?
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Undergrad Projection down 3 dimensions for aperiodic tiling/quasicrystal
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Undergrad What time structure supports info moving backward in time?
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Undergrad Radius of Gyration: Dist to Axis & Mass Concentration
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Undergrad Deterministic chaos in linear systems
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Undergrad What does peak intensity mean in qualitative XRD?
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Undergrad On the stability of an LTI circuit
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Undergrad Is it possible to have a breathable atmosphere at 6 atm
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Undergrad Need a practical example of E=mc^2 with real numbers
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Undergrad What is the most efficient radiator shape?
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