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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 Is It true that matter cannot be created or destroyed?
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"Trajectory" question for my novel
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High School Km and km: Is the Difference Real?
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Why did you start learning physics?
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High School Why is there a node in the middle of an open-open tube?
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High School Does Wind Affect How We Perceive Sound Volume?
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High School Launching a Juice Company: Seeking Advice on Slush-Ice Production
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Undergrad Should the Wave Equation for a Longitudinal Wave Include Time?
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Graduate I Have a Hypothesis and No Degree
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The Truth About Nikola Tesla: Separating Fact from Fiction
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News How Did Nobel Laureate Richard Taylor Impact Physics?
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Undergrad Question about subtractive color mixing
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Undergrad What physical phenomena is this?
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High School What are the Most Popular Topics in Physics?
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Undergrad Noise level at high-rise buildings
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Undergrad How Do Vortices Form in Fluid Dynamics?
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Undergrad How did you learn "simple" physics?
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High School At which point is gravity the strongest?
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Insights How well do you know Albert Einstein? - Comments
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Undergrad Fried round potato slices' shape....
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High School Maintaining the same flow rate while subdivding a tube
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Graduate What type of chamber and material would be required?
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High School Archimedes' Principle for gases - derivation?
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High School Why doesn't wood melt while ice won't burn?
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Undergrad Guitar Playing and Standing Waves
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The "dwindling relevance" of physics
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Graduate Why Do We Still Not Know the Reason Behind Gravity?
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High School What makes the Navier Stokes equation so difficult?
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Undergrad Is it possible to use the vacuum to launch a rocket?
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Undergrad Which is the best conductor? Silver or gold? Why?
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Undergrad 2 sign questions related to the wave equation
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High School Unusual question about video experiment on YouTube
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High School Reason for black gel pen refills leaking in winter
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High School Overview of identification methods
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Heating underneath snooker tables
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What originally got you interested in physics?
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High School Exponential decay convolved with Gaussian
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High School Will we be able to visit other solar systems anytime soon?
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Undergrad How to write measured value with error
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High School How does calculus relate to dimensions?
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High School Would it be possible to make something float?
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High School Important to know what is myth and propaganda
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High School What is the cryptic clue for the Higgs boson effect in a crossword?
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High School Revisiting Mathematical Concepts in Physics: Is It Worth the Frustration?
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High School Trying to get a basic understanding of the 4 key forces?
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Graduate Calculating Vibration Modes of a Cylinder (Drum Shell)?
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Unraveling the Enigma of Edward Witten: The Genius Behind the Scientist
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Graduate Photo Contest - Physics+Maths (12/23-1/5, win a book)
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Undergrad Scientific law vs. theory, Newton vs. Einstein
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High School Do bodies lose mass due to gravity?
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High School What is the reason for the attraction force of a bubble?
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High School Are the Laws of Physics consistant and universal?
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Undergrad Combination sink/source in one object
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Undergrad What Are Fascinating Examples of Emergence for a School Project?
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Undergrad Error in the average of same-value measures
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Trusting Physics channels on YouTube
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Undergrad Can You Really Build a Cyclotron for $17?
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Undergrad Typographical question: the section sign
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Were the Laws of Physics designed for torture?
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Robots on PhysicsForums: AI, Members & More
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Undergrad Is There an Absolute Maximum Density for Substances?
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Undergrad Is it possible for airplane radars to scan minefields?
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Undergrad Why there is no unit for memory recognised by SI
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High School Mastering Physics: Tips for Learning and Understanding the Fundamentals
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High School I want to Fetch Ideas for my School Project
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Undergrad How 'big' is the present moment in terms of time?
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High School Why don't we measure our weight in Newtons?
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High School Is Wikipedia a reliable reference for the physics student?
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Can aeroplanes be technically used as time travel machines?
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High School Propagation of information/energy at different frequencies
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High School What is the ΔEp = ΔEk + W equation used for in thermodynamics?
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High School How should I express this angle in words?
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Undergrad Does anyone know about furnaces?
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Undergrad Formulas describing fluid viscosity/compress-ability
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High School Two waves moving at right angles go in circles?
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Undergrad Interpretation of complex wave number
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High School Node at a closed end and an antinode at a open end of a tube
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High School How Did Eratosthenes Measure the Angle of the Stick?
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What are great places in US or UK for a physicist to visit?
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Graduate Understanding Poisson's Equation: General Forms
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Undergrad Scale Factors: Is a 10x Bigger Earth Possible?
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Undergrad Blower/Fan Curve Basics & Questions
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High School Coalescence of Drops: Exploring Kinetic Energy & Star Formation
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Undergrad Are Individuals with Autism Truly Geniuses in the Field of Physics?
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Undergrad Does the open area of my window make a difference?
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News How much physics helped Elon Musk in creating his companies?
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What would be a good birthday gift for an astrophysicist?
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High School What is the True Dimension of Human Perception?
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High School Are There Clocks That Measure Real Objective Time?
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Graduate Is There a Platform for Hosting a General Relativity Study Group in Physics?
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High School Calculate length of side of cube
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Undergrad Does a higher frame rate on a UHD TV affect the perception of motion?
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Undergrad How is TE selected as long or short?
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Undergrad Uncertainties and significant figures
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Graduate Do many people believe in false QM ideas
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High School Is it possible to use technology from a nervous system?
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Undergrad Error Propagation (Percentage) - sin(x)^2 / x^2
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High School Why are only some parts of this ice block cloudy?
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High School Dimensions of A and B are different, how to express?
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High School Understanding dv/dt: A Beginner's Guide to Calculus Concepts
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