FourierSeries

Using the Fourier Series To Find Some Interesting Sums

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Preliminaries If f(x) is periodic with period 2p and f’(x)…
SchwarzschildGeometry4

The Schwarzschild Geometry: Physically Reasonable?

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  In the last article, we looked at various counterintuitive…
SchwarzschildGeometry3

The Schwarzschild Geometry: Spacetime Diagrams

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  When we left off in part 2, we were looking at…
SchwarzschildGeometry2

The Schwarzschild Geometry: Coordinates

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  At the end of part 1, we looked at the form the…
fakenews

Fake News and Science Reporting

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During and even after the recent US election campaign, there…
SchwarzschildGeometry1

The Schwarzschild Geometry: Key Properties

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  Not long after Einstein published his Field Equation,…
quantumapplitudes

Quantum Amplitudes, Probabilities and EPR

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

Real Research in Unexpected Places - Backyards, Barns, Bayous

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21st century science labors under the myth that good experimental…
stephenhawkings

Think You Know Stephen Hawking

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Stephen Hawking has been a giant in the science world for decades.…
representations

Representations and Why Precision is Important

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First of all: What is a representation? It is the description…
angledimensions

Can Angles be Assigned a Dimension?

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1. Some Background on Dimensional Analysis ... if you are…
whystudyphysics

Why Study Physics? A Bit Goes a Long Way!

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If you don’t plan to become a scientist or an engineer, is…
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…
tripods

Digital Camera Buyer's Guide: Tripods

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  A tripod holds a camera still while the shutter…
dslr

Digital Camera Buyer's Guide: DSLR

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  I'm ready for a DSLR! A: These cameras were…
partial-differentiation

Partial Differentiation Without Tears

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Differentiation is usually taught quite well. Perhaps that's…
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…
astro_advanced

Advanced Astrophotography Tips

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  "I’ve tried astrophotography and want to know…
astro_inter

Intermediate Astrophotography Tips

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  Level 2: I know how to use a camera, what do I…
astro_intro

Introduction to Astrophotography

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  For this Insight series (3 total), my assumption…
davidhestenes

Interview with a Physicist: David Hestenes

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For those who don't know the great David Hestenes, he is the…

Interview with Science Advisor DrChinese

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We are pleased to share with you an interview with PF Science…
govandteachers

Blaming Government for Teacher and Scientist Failures in Integrity

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The article, "Governmental policy is wrecking science," makes…
cubicfunction

Solving the Cubic Equation for Dummies

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Everybody learns the "quadratic formula" for solving equations…
digitalcamera3

Digital Camera Buyer's Guide: Bridge Cameras

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  I've never owned a camera, but I want to get a…
rollingmotion

Explaining How Rolling Motion Works

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Although rolling wheels are everywhere, when most people are…
davidgriffths

Interview with a Physicist: David J. Griffiths

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We are pleased to introduce David J. Griffiths. Professor Griffiths…
quantumparticle

Spectral Standard Model and String Compactifications

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  The Connes-Lott-Chamseddine-Barrett model is the…
digitalcamera2

Digital Camera Buyer's Guide: Compact Point and Shoot

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  I've never owned a camera (besides what is in my…
cmbprimer4

A Poor Man's CMB Primer: Cosmic Acoustics

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  Before decoupling, photons and charged particles…
digitalcamera1

Digital Camera Buyer's Guide: Introduction

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  First, congratulations! Camera technology has advanced…
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…
namethephoto

Name the Science Photo

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Summer is almost over, but the fun doesn't have to stop! Take…
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…
quantumhard

Why Is Quantum Mechanics So Difficult?

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Strangely enough, QM's formalism isn't any more difficult than…
introphysics

So I Am Your Intro Physics Instructor

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I posted this elsewhere (on my personal blog), and someone mentioned…
entropy

Grandpa Chet's Entropy Recipe

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How do you determine the change in entropy for a closed system…
Supersymmetry

Supersymmetry and Deligne's Theorem

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  In 2002, Pierre Deligne proved a remarkable theorem…
Schwarzschild

Orbital Precession in the Schwarzschild and Kerr Metrics

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The Schwarzschild Metric A Lagrangian that can be used to describe…
Precessionrelaitivity

Precession in Special and General Relativity

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The Absolute Derivative In relativity we typically deal with…
spacetimetetrad

Tetrad Fields and Spacetime

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A spacetime is often described in terms of a tetrad field, that…
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…
omissionguage

Omissions in Mathematics Education: Gauge Integration

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The current (pure) mathematics curriculum at the university is…
polymer

Polymer Physics and Genetic Sequencing

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Introduction My main research focuses on using DNA molecules…

Relativity on Rotated Graph Paper

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This Insight is a follow up to my earlier tutorial Insight (Spacetime…