### Understanding Bohr's Helium Lines

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Introduction In a previous article "Calculating the Balmer Alpha…

### Maxwell's Equations in Magnetostatics and Solving with the Curl Operator

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Introduction: Maxwell's equation in differential form ## \nabla…

### How to Avoid Breaking Physics With Your "What If" Question

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We get a lot of "what if" questions here on Physics Forums. This…

### Learn the Basics of Dimensional Analysis

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As a university teacher and as a PF member, I have often noted…

### How to Zip Through a Rotating Tunnel Without Bumping Into the Walls

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Preface While browsing through unanswered posts in the Classical…

### Calculating the Balmer Alpha Line: Atomic Hydrogen

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Introduction Most readers acquainted with the hydrogen spectrum …

### Maxwell's Equations in a Static, Spherically Symmetric Spacetime

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In the first article in this series, we looked at the Einstein…

### Understanding Superposition

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IntroductionOne should first and foremost understand that…

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### The Einstein Field Equation in a Static, Spherically Symmetric Spacetime

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This will be the first of several articles which will provide,…

### How Most Proofs Are Structured and How to Write Them

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... or the answer to: "I have no idea where to start!" Proofs…

### Lens Performance Testing: Evaluating a Camera Lens

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I've done plenty of imaging performance testing on a variety…

### The Classical Limit of Quantum Mechanical Commutator

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The Classical Limit of Commutator (without fancy mathematics) Quantum…

### Precession in Special and General Relativity

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The Absolute Derivative In relativity we typically deal with…

### Equations of State for Photon Gas and Relativistic Electron Gas

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This Insight develops equations of state that are useful in calculations…

### The 7 Basic Rules of Quantum Mechanics

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For reference purposes and to help focus discussions on Physics…

### Clarifying Common Issues with Indistinguishable Particles

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Commonly there is a lot of imprecision in talking about ''indistinguishable''…

### A Formal Definition of Large-Scale Isotropy

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This Insight is part of my attempt to develop a formal definition…

### Renewable Energy Meets Power Grid Operations

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The electric power industry faces much turmoil in the coming…

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### A Pure Hamiltonian Proof of the Maupertuis Principle

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Here is another version of proof of Maupertuis's principle. This…

### Fermi-Walker Transport in Kerr Spacetime

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In the last two posts in this series, we developed some tools…

### How to Create a Universe - Instructions for an Apprentice God

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(-: ##~~~## A fantasy to be read at leisure time ##~~~## :-) Written…

### A Classical View of the Qubit

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This Insight article is part of my paper Foundations of quantum…

### Fermi-Walker Transport in Schwarzschild Spacetime

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In the first post in this series, we introduced the concepts…

### Aiming High and Managing Distractions as Keys to Success for Science Majors

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Over the years, I've noticed some distinct trends among the physics…

### AVX-512 Programming: Extracting Column Subtotals from a Table

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In this Insights article I'll present an example that shows how…

### Fermi-Walker Transport in Minkowski Spacetime

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This is the first of several posts that will develop some mathematical…

### The Sum of Geometric Series from Probability Theory

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Here I present a simple (but to the best of my knowledge, new)…

### 9 Reasons Quantum Mechanics is Incomplete

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I argue that all interpretations of quantum mechanics (QM) are…

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### AVX-512 Assembly Programming: Opmask Registers for Conditional Arithmetic

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This is the second installment in a continuing series of articles…

### An Accurate Simple Harmonic Oscillator Laboratory

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Learning Objectives * Execute a specific experimental procedure…

### An Intro to AVX-512 Assembly Programming

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History In 1998, the Intel Corporation released processors that…

### Against "interpretation"

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I am against "interpretations" of Quantum Mechanics (QM) in a…

### Lie Algebras: A Walkthrough The Representations

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Part III: Representations  10. Sums and…

### An Introduction to the Traditional Abacus of China and Japan

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Introduction Abacuses are commonly seen in ancient civilizations…

### An Accurate Hooke's Law Laboratory

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Learning Objectives * Gain confidence and experimental care…

### Lie Algebras: A Walkthrough The Structures

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Part II: Structures5. Decompositions.Lie…

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### Intro to Data Structures for Programming

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IntroductionIn the first part of this series, I talked about…

### Demystifying the Often Misunderstood Bernoulli's Equation

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Introduction Bernoulli's equation is one of the most useful…

### Are Magnetic Field Lines Real?

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We recently had a question in the relativity forums that mentioned…

### When Vehicle Power Dictates Acceleration

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One interesting problem when dealing with a vehicle of a certain…

### The Quantum Mystery of Wigner's Friend

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In this Insight I will introduce the quantum mystery called Wigner's…

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### Inventions and Inventors Quiz

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Time to test your inventions, inventors and patent knowledge.…

### The Unreasonable Effectiveness of the Popescu-Rohrlich Correlations

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In this Insight, I will show how the Popescu-Rohrlich (superquantum)…

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