What kind of galaxies have the highest entropy? Late at night, waiting for a hyped-up rocket launch, I stumbled upon an old attempt to calculate the entropy of my simulated dark matter ensemble while idly scrolling my old code from my first year of PhD. It wasn't used in any published result, other than confirming … Continue reading Baristas and Elliptical Galaxies – 00
Category: FWNotebook
[FWN Special] Journey to Dirac Spinors and the Dirac Equation
Yesterday (8 / 8 / 2022) was the 120th birthday of P.A.M. Dirac. It's been a long time, "enough time to fit a lot of progress in there". In his honour, I proceeded to dust off my QFT and related maths notes from long ago and will attempt to present a modern journey to the … Continue reading [FWN Special] Journey to Dirac Spinors and the Dirac Equation
FW’s Cosmology Unwrapped 2021: a year of papers in Review [Ongoing]
A summary of 2021 cosmology notes not immediately from my own research, but I consider important as well.
How Euler Tackled an innocent-looking integral
For unclear reasons, I really wanted to write down one wacky (read: elegant) calculus exercise tonight -- have you integrated the cotangent function twice? I feel the infinite series are mere toys dancing at the fingertips of Euler, and consider his method to tackle this quite beautiful, my usual attitude towards Euler math. For some … Continue reading How Euler Tackled an innocent-looking integral
[FW AdvLab] Basic Numerical Modelling with Python
One of the latest lab manuals that I've developed for Auckland Physics. I find it potentially helpful for the greater audience of the internet. This manual is intended for second-year physics majors, and assumes little prior mathematical knowledge beyond single variable calculus. Keywords: IVP, ODE, Numerical Analysis, scipy Access the Lab Manual:Download
FW’s NoteBook – Alternative Solution – The Maximisation of The Gravity Due to a Malleable Astroid
For the first time in ... ever, I thank reader feedback for this waaaay quicker solution. Christchurch, NZL
FW’s Notebook, Spacetime Optics with a Schwarzschild Blackhole
Some scrap calculations that I think are valid. —— Waiting for the black hole image now! 19:02 NZDT, Auckland