Emergence from the Superpoint

  In the previous article we saw that the generalization…

Homotopy Lie-n Algebras in Supergravity

  The previous article in this series claimed that…
string theory

It Was 20 Years Ago Today -- the M-theory Conjecture

    While the world didn't end, after all,…

Why You Should Not Use Wikipedia As Your Primary Source

It is no secret to anyone who has read my posts in this forum…

Misconception of the Heisenberg Uncertainty Principle

One of the common misconception about the Heisenberg Uncertainty…

The Most Important Thing You Can Learn from Physics Forums

It is a bit pompous of me think that I can actually tell you…

Plus/minus What? How to Interpret Error Bars

People some times find themselves staring at a number with a…

Approximate LCDM Expansion in Simplified Math (Part 4)

  Part 4: Cosmic Recession Rates An astronomer, accompanied…

False Dichotomy: Theorist or Experimentalist?

Many physics majors believe that pursuing a PhD in physics…

The LCDM Cosmological Model in Simplified Math (Part 3)

  Part 3: Important Cosmological Horizons and Distances A…

Approximate LCDM Expansion in Simplified Math (Part 2)

  Part 2: Time and Distance In Part 1 we have seen…

Neutrino Masses and Speed

It was hard to miss the 2011 OPERA neutrino speed measurement…

Understanding the General Relativity View of Gravity on Earth

Often students have difficulty reconciling the General Relativity…

Approximate LCDM Expansion in Simplified Math

  If we restrict ourselves to a spatially flat LCDM…
math obvious

Math and the Obvious

My #1 goal, when I teach a math class, is to convey a certain…
physics love

Science for Love or for Money

When I look over the most highly cited papers and my favorite…

Measuring Quantum Entanglement?

Though any pair of particles, given their history, might happen…

My Superparticle Bet with Frank Wilczek

There is an interesting story unfolding in particle physics.…

Some Useful Integrals In Quantum Field Theory

In my paper on renormalisation I mentioned what most who have…

Retrocausality: How Fundamental is the Arrow of Time?

In this Insight, I'll discuss a recent experiment ([1]  [2]…
research work

Initiating Research Work

    It has been a while since the last installment…
gas compression

Reversible Vs Irreversible Gas Compression/Expansion Work

Introduction In learning Thermodynamics, one of the difficult…
perbation theory

Causal Perturbation Theory

Relativistic quantum field theory is notorious for the occurrence…

Weak Values Part 2: The Quantum Cheshire Cat Experiment

In a previous Insight, Weak Values Part 1: "Asking Photons Where…

Weak Values Part 1: "Asking Photons Where They Have Been"

In a previous Insight on retrocausality, I explained an experiment…
negative temperature

Negative absolute temperatures

It's a famous result in thermodynamics that you can't reach absolute…
What is Energy

What is Energy?

What is energy? For some reason, this perfectly legitimate…

LHC Part 3: Protons as Large as a Barn

  See also part 1 and part 2 of the series. The…
earth year

Measuring How Many Days Are in a Year

How many days are there in a year? Ask pretty much anyone and…

Can Gene Editing Eliminate Alzheimer's Disease?

The development of the CRISPR/Cas9 system has made gene editing…

A Brachistochrone Subway Is Not a Cost-effective Idea

It is apparent that a subway tunnel could be built without the…

The Greenberger-Horne-Zeilinger Experiment

In two previous Insights, I shared Mermin's explanation of…

The Quantum Liar Experiment: An Instantiation of the Mermin Device

In 1981, Mermin published a paper[1], "Bringing home the atomic…