quantumfieldtheory

A First Idea of Quantum Field Theory - 20 Part Series

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These notes mean to give an expository but rigorous introduction…
circuitanalysis

The What and Why of Circuit Analysis Assumptions

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Probably everyone reading this article already has an education…
manifold2

A Journey to The Manifold SU(2) - Part II

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Part 1   Representations Image source: [24]   6.…

A Journey to The Manifold SU(2) - Part I

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Part 2   Differentiation, Spheres and Fiber Bundles Image…
10mathtips

10 Math Tips to Save Time and Avoid Mistakes

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Exam situations are always situations of stress. It comes with…
solarimaging

Getting Started with Solar System Imaging

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Some of the most visible objects in the sky are objects within…
fourierseries2

Further Sums Found Through Fourier Series

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In an earlier insight, I looked at the Fourier series for some…
perturbation

Introduction to Perturbative Quantum Field Theory

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This is the beginning of a series that gives an introduction…
quantumpeace

How I Stopped Worrying and Learned to Love Orthodox Quantum Mechanics

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Many people here know that I am a "Bohmian", i.e. an adherent…

15 of the Best PF 2017 Eclipse Photos

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The 2017 August Eclipse really was something special. Fortunately…
inflation5

A Poor Man's CMB Primer. Part 5: Quantum Seeds

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  The CMB establishes a record of ancient acoustic…
mathoperators

How to Tell Operations, Operators, Functionals and Representations Apart

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All these concepts belong to the toolbox of physicists. I read…
epsresults

Results Shown at EPS Conference

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The EPS conference was a week ago, and many new results and future…
m-theory

Super p-Brane Theory Emerging from Super Homotopy Theory

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  A notorious open problem: What is the non-perturbative…
Parsevalstheorem

An Integral Result from Parseval's Theorem

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Introduction: In this Insight article,  Parseval's theorem…
EdmondHamilton

Assessing the Physics in Edmond Hamilton's "The Second Satellite"

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This article won't contain much about physics that typical readers…
entanglement_entropy2

Entanglement Entropy – Part 2: Quantum Field Theory

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Part 1: Quantum Mechanics [This article expects the reader…
whatisatensor

What Is a Tensor?

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Let me start with a counter-question. What is a number? Before…
jimbiology

Interview with Biologist Jim McNamara

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What got you interested in biology? I was an amateur naturalist…
dampedforces

Damped Motion in Classical and Quantum Mechanics

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This Insights article is about dissipative forces (friction,…
name_the_scientist

Name the Scientist

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Time to test your scientist photo recognition skills! As always…
pamelagay

Interview with Astronomer Pamela Gay

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 Please give us a bit of background into your educational and…
SpectralParadox

Exploring the Spectral Paradox

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In terms of wavelength, peak solar radiation occurs at about…
undergradresearch

Niches for Publishable Undergraduate Research

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Undergraduate interest in research is a good thing; it's even…
coldquestioning

Very Little Excuse To Ask A Question Cold

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We frequently get questions such as these: "What is energy?" "What…
processing

The Joy of Processing

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In the early days of the personal computer revolution, computers…
entanglement_entropy

Entanglement Entropy - Part 1: Quantum Mechanics

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Quantum Mechanics(QM) is one of the greatest intellectual achievements…
BondiKcalculus

Relativity Using the Bondi K-calculus

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Although Special Relativity was formulated by Einstein (1905),…
physicslab

Revamping Undergraduate Introductory Physics Laboratory

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This is a compilation of my blog entry on this singular "project"…
frasercain2

Q&A With Universe Today's Fraser Cain

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Special thanks to Universe Today founder Fraser Cain for this…
lensfocus

Lenses and Pinholes: What Does "In Focus" Mean?

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In introductory physics, the optics unit often teaches about…
sabine1

Interview with a Theoretical Physicist: Sabine Hossenfelder

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We are pleased to introduce Sabine Hossenfelder. Sabine is a…
deriitive5

The Pantheon of Derivatives - Part V

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  Important Theorems - biased, of course Implicit…