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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.
High School Questions on magnets (multiple so I don't spam the forum)
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Undergrad Experimenting to Answer Research Q's
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Undergrad Reynolds Number and Turbulence: Why Does Increasing Density Affect Flow?
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Undergrad Exploring Energy in Astronomy: Kinetic, Potential & Mass?
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High School Is Entropy the Key to Understanding the Big Bang and the Fate of the Universe?
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High School Length, Time, and Velocity -- Which are fundamental quantities?
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Undergrad Work done by a gas in a heat engine which compresses a spring
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High School Why are gravitons needed to explain gravitational attraction?
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Undergrad Trouble understanding the SI definition of 1 second
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Undergrad Higher Dimensional Time Implications?
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Undergrad Understanding iris electrode and iris doublet (Accelerator physics)
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Undergrad Mass & Density: Unpacking Feynman's Idea
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High School Why can't gravity be just a form of magnetic attraction?
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Graduate Feynman parametrization integration by parts
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Undergrad Alternate expressions for the uncertainty propagation
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Undergrad Standard deviation and count rate
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Undergrad Discussing Information Theory with non-scientists
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High School Energy: Abstract Concept or Entity?
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Undergrad The Big Bang and the original size of Universe
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Undergrad Changing or breaking the most fundamental laws and symmetries?
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Undergrad What wavelength can penetrate soil to 15 feet?
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Undergrad What is meant by 'affine' model in physical sciences?
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Undergrad Explaining the Hierarchy problem for beginners
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Undergrad Are there any inexpensive spectrometers?
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High School Can Push Travel Faster Than Light?
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High School Are Electrons the Building Blocks of Our Universe?
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Undergrad Is anything in the physical world infinite?
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High School What sort of can would roll the fastest?
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High School Why are things the color they are?
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High School Distance between two points on Earth doesn't increase with altitude?
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High School Does Light Energy contain Heat Energy in a large scale?
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Undergrad Propagation of uncertainty with some constants
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Undergrad What does "upright" mean in geometric optics?
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Graduate Structural coloration of a zeolite monolayer
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High School Why exactly do we need the gravitational constant?
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High School A question about why gravity is only attractive
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Graduate SO(3) group, Heisenberg Hamiltonian
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High School Can You Use a Rubber Bracelet as a Buoyancy Reference for Freediving?
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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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High School Can a fireplace be used as a fallout shelter?
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High School Can Inductive Reasoning Explain the Movement of Strings on Spools and Bikes?
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Undergrad Permittivity/Permeability, the speed of light, and the meter
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High School Questions on how helicopters fly
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High School Can Himalayan Salt Dissolve in Candle Wax?
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High School 4 Questions About Lenz's Law Experiment
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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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High School Andy Meadowcroft - Introduction (and a question about nuclear fusion)
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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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High School Would a fall from 53 centimeters break the glass from a window?
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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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High School Why does a DC motor have a restricted speed?
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High School Work and Friction: How Does Fxv Apply?
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High School Create an artificial eddy/tornado
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Undergrad Is There a Connection Between Rainbows and Holograms?
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High School Oberth effect on a slope - experiment idea
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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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High School Beam of air: Extending the range of a fan
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Graduate Meaning of density of microstates in phase space
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High School Space propulsion without mass ejecting
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High School Could satellite be geo-stationary away from equatorial plane?
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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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High School Simple Acoustics Question -- Which neighbor hears the other better?
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High School Question about magnetizing and the First law of Thermodynamics
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Graduate How to calculate the temperature change of a laser-irradiated material
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High School One way speed of light in one reference frame measurement
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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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High School Is a Battery-Electric Vehicle Really More Efficient Than a Gas Car?
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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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High School Cheapest equipment to boil water at 60℃
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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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High School How far do photons travel inside common lasers?
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High School Regarding electron-positron annihilation
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High School Projectile motion — Thinking about forces on a curve ball
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Graduate What are the rational solutions to the square root of four?
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High School What if I could see in radio instead of light?
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Undergrad Apparent Poynting vector contradiction
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High School EM radiation creation within stars
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Graduate Looking for the earliest articles about Quantum Gravity
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