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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 Is there so-called "optimal traction" for vehicles?
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I What chemicals inside a hearing aid battery make it explode?
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B Measuring Objects using Dissimilar Units
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B Energy required to get 1 kg of lead to a given temp from 0 K
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I Is Non-Commutative Geometry the Key to a Discrete Model of Spacetime?
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B Will Block M2 Move Left? Understanding Forces in a Connected Spring System"
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I Is there a simple explanation for Fermi-Dirac statistics?
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B Calculate, not measure the value of c
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I If we teleport 1mm^3 of a neutron star outside it what hapens?
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B Greatest Possible Uncertainty and Sig Figs
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I Questions on Debye's Model of solids
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I Fermat's Principle: Is Light Travel Time Min?
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B History of Error Bars in Physics
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B What Is the Harm in Using Finite dx in Calculus?
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Emergent Property: Usefulness in Physics
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I PMT Sensitivity Explained: Understanding Photomultiplier Tube Sensitivity
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B Is Time Emerging? Physicists' Experiments & Many-Worlds Interpretation
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B When Difference between Kelvin and Celsius are negligible
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B Exploring Mass-Energy Equivalence: Impact of Heating on Mass Increase
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EMF Oppsition in Adjacent Wires +/- Swing
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I Description of physical system help
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I Spinning bicycle wheel in air and letting it go
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B Addition of Perpendicular Vectors in two ways
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B Spiral piece of wood moves upstream
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I The amount of time it will take to melt ice
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B In night vision equipment, how does 'information' transfer?
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I People pulling rope, one in a perpendicular direction
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B Graphene Spinning Speed: Theoretical Max RPM of 1m Radius
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I Can Infrared Photons Enter Nanotubes?
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B How do we know our laws of physics are correct?
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Delta V Calculator: Launch in an Atmosphere & Orbit Dimensions
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I Two blocks connected with a fragile rope
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I Understanding Gauss's Law: Where Does the Argument Break Down?
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B Is There a Formula for Gm/r in Gravitational Potential?
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I Force acting on a stationary object in a flowing pipe
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B My Third Post: Change of Intermolecular Distance?
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I Physics of colors and our perception
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I Is E=mc^2 Explained Correctly?
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I How to measure the surface area of an arbitrary 3D object
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B Condensate around rocket spin? Why?
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I Gauss' law applied on a four-dimensional surface
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Creating a (synthetic) song from a zebra finch's muscle
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B Is the Stairmaster a Valuable Exercise Tool Despite Physics Misconceptions?
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B Why do modern wind turbines have 3 blades?
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A A x ds = v x dv or a • ds = v • dv?
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I The role of capillaries in a dilution refrigerator
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I Translational Symmetry: Effects on Laws & World
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I Calculating E Field Inside Cylinder of Finite Height
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What is the real definition of foot-candle?
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B Symmetry in Nature: Is Physical Nature Symmetrical?
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B Why does mercury rise in a glass capillary tube despite its strong cohesion?
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I Does Physics Allow for a Time Component in Vector Quantities?
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B Understanding Absence of a Microscopic Arrow of Time
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B LC Oscillation: Current Flow & Charge Polarity
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B Is everything binary on macroscopic level
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I Why are the laws of physics what they are?
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B Distance traveled in the nth second
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Error in Mathematical Methods for Physicist by Arfken, et al
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B Conduction and Diffusion: Two Sides of Heat Transfer?
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I Frozen fruit aggregates in hot porridge
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B Lead vs. Rubber Bullets: Which is More Effective in Stopping a Bear?
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B Can I use three equations for the same concept?
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B How much should it cost to build an MRI Scanner?
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I How do telescopes allow us to see light sources millions of light years away?
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I Do we "lose" information when viewing objects at a distance?
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B Can graphene be used as a template for graphene growth
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B What does it mean by "the body covers equal distance''
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I Tensor Equations: Invariance Across Different Reference Frames?
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A Questions about the energy of a wave as a Taylor series
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B GoalRef Technology Basics: Low Frequency Magnetic Fields & Coils
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B What Are the Different Fields of Physics Explored by Dominic Walliman?
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I Babies Upside Down: How Buoyancy Protects from Gravity
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I Dust Accumulation on Fan Blades and Elsewhere
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B How Long Will My Camping Battery Last?
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I The Mystery of Room Coolers During an Unusually Hot Summer
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I Is Energy Fundamental or Derived?
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I How can I represent a stochastic process in 2D?
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I Can the Parker Solar Probe Be Cooled by Radiating Heat into Space?
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B Have you seen the Space Showers in Chicago?
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I How are Bamboo Copter Toys Stabilized?
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B A quick theoretical question on dark matter
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I Is this just a normal fluorescence of glass molecules?
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I Why do the intake spikes on the SR71 Blackbird point down and inboard?
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B What are energy and charge in subatomic particles?
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I What does the total time derivative of a function signify in Noether's Theorem?
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B What is the gravitational force like near a black hole?
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I Fourier transform -- what physical variables am I allowed to transform between?
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I Which object will hit the surface of a planet first?
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I Dropped objects hitting the ground at the same time?
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I How to determine the center of gravity of a satellite
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Feynman Audio Lectures: Complete Set Available?
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B Can Cameras Outperform Human Eyes in Perception?
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I How to Calculate Power of a Turning Shaft?
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I Force exerted by a rope wound around a disk
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B Lowest possible altitude for a Satellite
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I Why Am I Getting a Reading of 0.3 Amps When Connecting AA Batteries in Parallel?
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I Emmy Noether's Theorem: Learning STEM for Beginners
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B Traffic Turbines - Free Energy or Cost Exchange?
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I Can tiny gas bubbles cause discomfort in body cavities?
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B Why is Fire Considered Conductive?
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