Relativity on Rotated Graph Paper

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

Explaining the General Brachistochrone Problem

/
Consider a problem about the curve of fastest descent in the…
qualitycontrol

Reflections on Technology Product Quality

/
On Hardware Quality It is impossible to test quality into…
integralmisconceptions

Some Misconceptions on Indefinite Integrals

/
Integration is an incredibly useful technique taught in all calculus…
basickinematics

Basic Kinematics in Classical Mechanics

/
There is an interesting thing in teaching of Classical Mechanics.…
groupsandgeometry

Exploring the Relationship Between Group Theory and Geometry

/
There is a very deep link between group theory and geometry.…
selfstudy

How to Self Study Algebra: Abstract Algebra

/
There are three big parts of mathematics: geometry, analysis…
computers

An Interesting Ramsey Theory Riddle

/
This insight will be about Ramsey theory. Ramsey theory has its…

Spacetime Diagrams of Light Clocks

/
We demonstrate a method for constructing spacetime diagrams for…
kinematics

Presenting a Rare Kinematic Formula

/
Here we present some useful kinematic fact which is uncommon…
universestart

Where Did the Big Bang Happen?

/
According to standard cosmological models, which are based on…
nugatory

Interview with a Physics Mentor: Nugatory

/
Give us a little background on yourself? I was born in Washington…

A Problem From Greg Egan's "Incandescence"

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

Elementary Construction of the Angular Velocity

/
Physics books  seldom contain accurate definition of the angular…
softwarenotperfect

Why Your Software is Never Perfect

/
We occasionally have students ask for help on software, "My software…
selfstudy

5 Problems with Self Studying Mathetmatics

/
For several years already I have been trying to help people who…
irrationalnumbers

Mathematical Irrationality for Dummies

/
On one of my restless wanderings around the Internet, I came…
Photoacoustic

The Interaction of Sound and Light

/
I recently wrote a post on my blog about a fairly esoteric idea…
logicp3

Scientific Inference: Balancing Predictive Success with Falsifiability

/
  Bayes' Theorem: Balancing predictive success with…
seancarroll

Interview with a Physicist: Sean Carroll

/
We are pleased to introduce Sean Carroll! Sean Carroll is…
physicsathome

Resources for High School Physics at Home

/
A year long high school Physics course is important preparation…
themoon

The Moon Quiz

/
For ages it has been Earth's little sister. Find out just how…
selfstudyanalysis

How to Self Study Analysis: Intermediate Analysis

/
If you wish to follow this guide, then you should know how to…
mathjax

MathJax Developer: Peter Krautzberger

/
We are pleased to introduce Peter Krautzberger.  Peter is a…
logicp2

Scientific Inference: Do We Really Need Induction?

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

How to Self Study Algebra: Linear Algebra

/
In this insight I will give a roadmap to learn the basics of…
antigravity

Roger Babson's Anti-Gravity Contest

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

Resources for High School Math at Home

/
The popularity of home schooling and failures of the public schools…
logic1

Scientific Inference: Logical induction ain't logical

/
  Three million years ago, the grandfathers of our…
drclaude

Interview with Chemical Physicist: DrClaude

/
DrClaude is a mentor at Physics Forums!   What brought…
peterdonis

Interview with a Physics Mentor: PeterDonis

/
PeterDonis is a Physics Mentor at Physics Forums   Give…
mathiq

Am I Cut Out for Mathematics or Sciences?

/
We often get threads by new members asking whether they are cut…
personaltheories1

Why Won't You Look at My New Theory?

/
In any forum where science is discussed, there will always be…
highschoolmath

In High School and Want to Do Advanced Mathematics?

/
This insight is written for high school students who don't feel…
virtualparticlesmyths

Misconceptions about Virtual Particles

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

AC Power Analysis: Cyber Resilience

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

How Representative is the Night Sky?

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

Perfect Secrecy and the Unbreakable Cipher

/
Is it possible to design an unbreakable cipher? Do methods of…
quantumentanglement

How the EPR Paradox Fits Between Entanglement and Nonlocality

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

AC Power Analysis: Network Analysis

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

The Revival of Newton-Cartan Theory

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

The Physics of Virtual Particles

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

A Brief on the Expansion of the Universe

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

Secrets of Successful Science Projects

/
Abstract Over the past few years, the author and his wife have…
acpoweranalysisp1

AC Power Analysis: System Basics

/
  Instantaneous Power The formula for power is:…
carlo

Interview with a Theoretical Physicist: Carlo Rovelli

/
Please give us a bit of background on your life and professional…
scavengerhunt

PF Insights Scavenger Hunt

/
Have you been keeping up with reading each PF Insight? Let's…
johnbaezp2

Interview with a Mathematical Physicist: John Baez Part 2

/
Read part 1 of this interview. Tell us about your experience…
johnbaezp1

Interview with a Mathematical Physicist: John Baez Part 1

/
We are proud to introduce you to Mathematical Physicist and…
cipher

The Monographic Substitution Cipher: From Julius Caesar to the KGB

/
A monographic substitution cipher works by replacing individual…
garrettlisi

Interview with a Theoretical Physicist: Garrett Lisi

/
We are pleased to introduce you to Theoretical Physicist and…