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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 What does "upright" mean in geometric optics?
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Undergrad Help Needed for Lens Selection for Fiber optics
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Undergrad What happens to photonic molecules?
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Undergrad Permittivity/Permeability, the speed of light, and the meter
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Undergrad How Does the Angle at P1 Change Over Time Until the Object Falls?
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Undergrad The Job of the Demon: Compressing Gas Without Work
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Undergrad Rigid body physics (machine learning environment)
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Undergrad Looking for a Comprehensive Explanation of Natural Units
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Undergrad Radio waves and height gain in fading zones
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Undergrad Understanding Tensors & Knot Theory in Physics
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Undergrad Rotational Orientation of Monatomic Gas: Angular Momentum Effects
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Undergrad Why in an electric circuit with only a generator the resistance R=infinity?
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Undergrad Why does light travel slower in water?
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Undergrad Application of failure criteria to viscoelastic materials
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Undergrad How does the Poynting vector factor into a normal circuit?
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Undergrad Getting a sauna to a certain temperature - faster with more rocks?
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Undergrad Usage of First Order Elastic Constants in Soft Body Equations
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Undergrad Is There a Connection Between Rainbows and Holograms?
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Undergrad Do you have an example of a truly random phenomenon?
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Undergrad NMR Remote Sensing: Does US Army Detect Buried Weapons?
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Undergrad Chain on a slope remains still if its end points are of equal height?
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Undergrad Confirm 6ft Tall Boy Throwing Tennis Ball 🎾 in Gym
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Undergrad Where does Hamilton's Principle come from?
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Undergrad Hydrodynamics - Wave of Translation
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Undergrad Designing parabolic dish and feedhorn
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Undergrad Using Diffraction (i.e., Fresnel Zone Plate) to defocus/diverge light
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Undergrad Can you practically measure an infinite amount of some quantity?
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Undergrad Image for increase in gravitational potential energy in radial field
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Undergrad Theoretical maximum efficiency of a heat engine without Carnot
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Undergrad Chemical potential and Fermi level
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Undergrad Fermi energy definition and Fermi-Dirac distribution
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Undergrad Is the Fermi-Dirac distribution equal to zero at the state of highest energy?
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Undergrad What is the Meaning of the Fermi Energy?
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Undergrad Can iron filings cause permanent eye damage?
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Undergrad Apparent Poynting vector contradiction
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Undergrad Color Theory Equations: Additive Color Mixing & Analytical Luminosity
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Undergrad What are the most energetic lightning "superbolts" ever measured?
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Undergrad What Explains the Odd Behavior of the Four Fundamental Forces?
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Undergrad Why Do Physicists Use Gaussian Error Distributions?
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Undergrad Entropy question involving our Solar System
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Undergrad Time travel is a fact or fiction.?
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Undergrad Measurement Science: True Magnitude, Error & Accuracy
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Undergrad A problem with science media coverage
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Undergrad Usable energy from alpha particles?
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Undergrad Propagation of uncertainty in the slope
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Undergrad Nozzle Reaction Forces: Explaining the Resultant Force
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Undergrad FTL Travel: The Matryoshka Paradox
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Undergrad Does luminous efficacy differ between direct and reflected sunlight?
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Undergrad HVAC dehumidifier energy wastage
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Undergrad Preventing parasitics for wires?
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Undergrad Fluids: Bernoulli's Equation Derivation Question
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Undergrad A ray crossing 2 media of different indices and energy conservation
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Undergrad Why does entropy grow when a solar system is formed?
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Undergrad Are all symmetries in physics just approximations?
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Undergrad Can a single photon be reflected by a mirror?
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Undergrad Can the Principle of Least Action Unify Different Branches of Physics?
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Undergrad Numerically solving Time-independent Schrödinger eqn. using Shooting algorithm
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Undergrad Can we calculate the efficiency and output of solar panels on an electron level?
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Undergrad What is the confusion surrounding time as a coordinate in general relativity?
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Undergrad Can Electromagnetic Fields Exist Independently of Charges?
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Undergrad Why high Q factors have low phase noise
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Undergrad How to calculate the focal length and focal point of collimator?
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Undergrad The Simulation Theory and the dangers of pop-science
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Undergrad How can artificial gravity be created for space exploration?
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Undergrad Telescoping antenna -- why is there a knob on top?
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Undergrad What are the biggest problems in the study of complex systems?
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Undergrad Two stage amplifier for a plastic scintillator
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Undergrad Left-right arrow in Einstein equation
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Undergrad What is the secret behind Shi Yan Ming's extraordinary punching power?
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Undergrad Force required to open a swinging gate
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Undergrad Question about data analysis and error
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Undergrad Are the Laws of Thermodynamics still applicable in modern physics?
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Undergrad Why is the Sabine equation considered an equation, but not a law?
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Undergrad Obtain the Density of State using the Green function
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Undergrad On spherical geometry and its applications in physics
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Undergrad Irreversible Isochoric Process in a Cycle
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Undergrad Ignite Jupiter? Could Earthlike Planets Exist in Its Atmosphere?
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Undergrad Why are some theories in physics falsifiable?
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Undergrad Valentine Monopole & Detector Constructions
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Undergrad Wheel physics -- which scooter would be easiest to get to school and back?
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Undergrad Varying dimensional universal constants
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Undergrad Can Energy Be Measured Directly or Only Through Its Changes?
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Undergrad From Micro to Macro physics (Emergence)
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Undergrad Why find the highest order maxima/minima in slit equations?
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Undergrad Emergence of Complexity and Life
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Undergrad How Does Touch Occur in the Brain in a Vat Hypothesis?
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Undergrad Why does wind blow leaves in circles?
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Undergrad Perceived Height and actual height
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Undergrad Does determinism exclude retrocausality?
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Undergrad Calculate humidity raise/drop when opening a window
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Undergrad What does "m0 → 0" mean in physics
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Undergrad How to relate to math expressions that don’t have physical representations
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Undergrad The Tritium Puzzle: Unravelling Mass-Energy Equivalence
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Undergrad Different kinds of infinity in physics?
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Undergrad Unconventional methods for pumping down a vacuum chamber?
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Undergrad Is Theoretical Physics Progressing Slower Than Experimental Physics?
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Undergrad Could Dark Matter Be Present in Our Solar System?
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Undergrad Physics and Philosophy are intertwined....
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Undergrad Derivation of Average Square Energy Fluctuation in a Canonical System
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Undergrad Raytracing Programs: Find Under $1000 | Fritz
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