prequantumgeometry2

Higher Prequantum Geometry II: The Principle of Extremal Action - Comonadically

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    The previous article motivated the importance…
redshiftblackholes

Time Dilation and Redshift for a Static Black Hole

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The following is an overview of the time dilation and gravitational…
prequantumgeometry

Higher Prequantum Geometry I: The Need for Prequantum Geometry

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  Before proceeding with discussion of the super…
atoms

Can We See an Atom?

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If you look on the internet for pictures of atoms, you will…
gravity3

Does Gravity Gravitate? Part 3 - The Wave

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  In the first two posts in this series, we looked…
gravitate2

Does Gravity Gravitate? Part 2

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  In the first post of this series, I talked about…
birthcmb

A Poor Man's CMB Primer. Part 2: The Birth of a Cosmic Background Radiation

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  The early universe was hot. So hot, in fact, that…
balloonanalogy

The Balloon Analogy ... the Good, the Bad, and the Ugly

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This article was written with considerable input from several…
spacetime4

Struggles With the Continuum - Part 3

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  In these posts, we're seeing how our favorite theories…
bubbles

Explosion-Generated Collapsing Vacuum Bubbles Reach 20,000 Kelvin

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In a recent paper published in Physical Review Letters (PRL),…
cmb

A Poor Man's CMB Primer. Part 1: Orientation

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  This is a picture of the cosmic microwave background: Fig…
planck

A Hand-Wavy Discussion of the Planck Length

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The Planck length is an extremely small distance constructed…
spacetime2

Struggles With The Continuum - Part 2

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  Last time we saw that that nobody yet knows if…
animalspeeds

Scaling Laws and the Speed of Animals

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In a recent issue of the American Journal of Physics, I read…
infinity_faq

Questions About Infinity

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Understanding the behaviour of infinity is one of the major accomplishments…
spacetime

Struggles With the Continuum - Part 1

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  Is spacetime really a continuum?  That is, can…
photoelectric

"Violating" Einstein's Photoelectric Effect Model

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One of the most spectacular theoretical descriptions that Einstein…
CosmologicalHorizons

Inflationary Misconceptions and the Basics of Cosmological Horizons

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It is a common saying that during inflation "space expanded faster…
relativitytherorm

Relativistic Work-Kinetic Energy Theorem

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I was bothered for a long time by the reasons for the relativistic…
supergravity

Emergence from the Superpoint

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  In the previous article we saw that the generalization…
liealgebra

Homotopy Lie-n Algebras in Supergravity

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  The previous article in this series claimed that…
string theory

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

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    While the world didn't end, after all,…
hupmisconceptions1

Misconception of the Heisenberg Uncertainty Principle

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One of the common misconception about the Heisenberg Uncertainty…
errorbars

Plus/minus What? How to Interpret Error Bars

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People some times find themselves staring at a number with a…
LCDM4

Approximate LCDM Expansion in Simplified Math (Part 4)

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  Part 4: Cosmic Recession Rates An astronomer, accompanied…
LCDM3

The LCDM Cosmological Model in Simplified Math (Part 3)

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  Part 3: Important Cosmological Horizons and Distances A…
lcdmjorrie

Approximate LCDM Expansion in Simplified Math (Part 2)

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

Neutrino Masses and Speed

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

Understanding the General Relativity View of Gravity on Earth

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Often students have difficulty reconciling the General Relativity…
cosmo

Approximate LCDM Expansion in Simplified Math

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  If we restrict ourselves to a spatially flat LCDM…
physics love

Science for Love or for Money

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

Measuring Quantum Entanglement?

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

My Superparticle Bet with Frank Wilczek

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There is an interesting story unfolding in particle physics.…