Physics Articles

Here contains the collection of expert physics articles that deal with physics topics. These span all skill ranges and may include astronomy and cosmology topics. Learn something new today by professionals in the fields you are interested in!

inflation5

A Poor Man's CMB Primer: Quantum Seeds

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  The CMB establishes a record of ancient acoustic…
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…
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: Quantum Field Theory

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

Damped Motion in Classical and Quantum Mechanics

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

Exploring the Spectral Paradox

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

Entanglement Entropy: Quantum Mechanics

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

The Diffraction Limited Spot Size with Perfect Focusing

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Purpose:  The purpose of this Insights article is to give…
cornuspiral

Frenet Equations in 2-D Which Result in the Cornu Spiral

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This Insights article is intended as an introduction to the Frenet-Serret…
quantumflux

Vacuum Fluctuations in Experimental Practice

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This Insight Article is a sequel of the Insight Articles ”The…
magnet

Permanent Magnets Explained by Magnetic Surface Currents

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Introduction: The purpose of this Insight is to explain permanent…
highercategorytheory

Why Higher Category Theory in Physics?

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  This here is my personal story. For an alternative…
SchwarzschildGeometry3

The Schwarzschild Geometry: Spacetime Diagrams

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  When we left off in part 2, we were looking at…
quantumapplitudes

Quantum Amplitudes, Probabilities and EPR

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This is a little note about quantum amplitudes. Even though quantum…
vaccummyth

The Vacuum Fluctuation Myth

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This Insight Article is a sequel of the Insight Articles ”The…
anyon

Anyon Demystified

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Every quantum physicist knows that all particles are either bosons…
frameofreference2

Frames of Reference: A Skateboarder's View

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My essay Explaining Rolling Motion raised some commentary about…
relativitygauge

General Relativity as a Gauge Theory

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The fundamental interactions of the Standard Model are described…
quantumparticle

Spectral Standard Model and String Compactifications

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  The Connes-Lott-Chamseddine-Barrett model is the…
cmbprimer4

A Poor Man's CMB Primer: Cosmic Acoustics

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  Before decoupling, photons and charged particles…
spacetimecon

Struggles with the Continuum: Spacetime Conclusion

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  We've been looking at how the continuum nature…
11dgravity

11d Gravity From Just the Torsion Constraint

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  It is familiar that Einstein gravity may be formulated …
spacetime7

Struggles with the Continuum: General Relativity

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  Combining electromagnetism with relativity and…
ohmslaw

Why Ohm’s Law Is Not a Law

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At first I wanted this title to say “Ohm’s law is not a Law.” …
carcapacity

Why Road Capacity Is Almost Independent of the Speed Limit

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Let us start with a familiar situation. Take a familiar part…
Supersymmetry

Supersymmetry and Deligne's Theorem

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  In 2002, Pierre Deligne proved a remarkable theorem…
LHC4

LHC Part 4: Searching for New Particles and Decays

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  The LHC experiments are in full swing collecting…
acusticbeats

Acoustic 'beats' from Mismatched Musical Frequencies

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In late high school physics courses and first year university…

Spacetime Diagrams of Light Clocks

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We demonstrate a method for constructing spacetime diagrams for…

A Problem From Greg Egan's "Incandescence"

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The following problem was inspired by reading Greg Egan's "Incadescence". …
Photoacoustic

The Interaction of Sound and Light

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I recently wrote a post on my blog about a fairly esoteric idea…
logicp2

Scientific Inference: Do We Really Need Induction?

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  Part 2. "We don't need no stinkin' induction" --…
antigravity

Roger Babson's Anti-Gravity Contest

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In the early 20th century, an eccentric businessman named Roger…
logic1

Scientific Inference: Logical induction ain't logical

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  Three million years ago, the grandfathers of our…
virtualparticlesmyths

Misconceptions about Virtual Particles

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This Insight Article is a sequel of the Insight Article ''The…
acpoweranalysisp3

AC Power Analysis: Cyber Resilience

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  Power system security is much too big a topic for…
nightsky

How Representative is the Night Sky?

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A couple of weeks back, a thread was started about whether or…
quantumentanglement

How the EPR Paradox Fits Between Entanglement and Nonlocality

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If we violate a Bell inequality, we know we have quantum entanglement,…
acpoweranalysisp2

AC Power Analysis: Network Analysis

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  Let me use the terms “power grid” and “network”…
Newton-Cartan-Theory

The Revival of Newton-Cartan Theory

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It's a calculation which you can find in any textbook on General…
virtualparticles

The Physics of Virtual Particles

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In discussions on the internet (including a number of wikipedia…
universeexpand

A Brief on the Expansion of the Universe

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The "ordinary Big Bang and expansion" (no inflation, no dark…
acpoweranalysisp1

AC Power Analysis: System Basics

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  Instantaneous Power The formula for power is:…
pet_scan

The Basics of Positron Emission Tomography (PET)

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People often ask about the practical applications of fundamental…
tcp_ip

Administering TCP/IP In Automation or Measurement Networks

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The 1990s saw the widespread adoption of network technology on…
Ethernettime

Time Synchronization Across Switched Ethernet

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Now and then you come across measurement problems that are tightly…
qminterpret

Tools to Enrich our Quantum Mechanics Interpretations Discourse

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Introduction Many times, we encounter ourselves…
spacetime6

Struggles with the Continuum - Freeman Dyson and QED

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  Last time I sketched how physicists use quantum…
islingmodel

High Temperature and Low Duality for the Ising Model on an Infinite Regular Tree

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Today I felt like sharing a computation that I thought was interesting.…
secondaryforces

Secondary Forces Explored

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Many are familiar with the "fundamental forces" of nature: gravity,…