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…
RelativityVariables

Relativity Variables: Velocity, Doppler-Bondi k, and Rapidity

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Traditional presentations of special relativity place emphasis…
deriitive4

The Pantheon of Derivatives - Part IV

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  Lie Derivatives A Lie derivative is in general the…
deriitive3

The Pantheon of Derivatives - Part III

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  Some Topology Whereas the terminology of vector…
cameralense

New High Performance Ultra-wide Angle Lenses

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Note, unless otherwise specified, all focal lengths are in terms…
deriitive2

The Pantheon of Derivatives - Part II

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  Generalizations Beyond ##\mathbb{R}## and ##\mathbb{C}## As…
deriitive

The Pantheon of Derivatives - 5 Part Series

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  Differentiation in a Nutshell I want to gather the…
diffractiontheory

The Diffraction Limited Spot Size with Perfect Focusing

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

What Is The Most Important Thing That You Learned?

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I mentioned in an earlier Insight on what I think are the most…
integraltrick

Trick to Solving Integrals Involving Tangent and Secant

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This little trick is used for some integration problems involving…
math

Interview with Mathematician Fresh_42

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We are please to introduce our newest member of the mentor group,…
linearacceleration

Frames of Reference: Linear Acceleration View

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My previous Insight, Frames of Reference: A Skateboarder's View,…
scavengerhunt2

PF Insight Scavenger Hunt 2

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We have an amazing count of over 320 Insights published at Physics…
computerlanguages

Computer Language Primer - Part 1

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In this Insights Guide the focus is entirely on types of languages,…
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…
experimenthistory

History's First Science Experiments

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In this Insight I'm going to talk about two of the first science…
boatramps

Real Research in Unexpected Places - Boat Ramps

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Read part 1 -Backyards, Barns, Bayous Real Research in Unexpected…
geometrysimple

Simple Geometry, Deep Math

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Introduction It is a remarkable fact that consideration of…
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…
nasa

Test Your NASA Knowledge

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Since the mid 20th century NASA has been a force in aerospace…