Alex Zhou

Writing

Selected essays and notes from 2018–2024, originally posted at physicstomato.com. Mostly about physics, science, and how to explain things.

2020 2 pieces
2019 2 pieces
2018 6 pieces
  • Vocabulary Games

    Hi there! Long time no see.

  • Two Uber Rides

    Saturday, June 30th 11:46 PM

  • Generating 3D Coordinates for Practically Any Crystal Lattice

    It’s generally pretty hard to find analytical solutions for properties of complex crystal lattices—by complex, I mean really anything outside the scope of…

  • An Ode to the Major Sixth

    Happy new year! A month late, I know, but the thought is there. I've got t wo quick updates to start: First quick update: At the time of writing this, I…

  • The Ising Model

    The Ising model is an idealized statistical mechanics model of ferromagnetism—the general mechanism that explains how materials can become permanent…

  • Thermodynamics of a Rubber Band

    Preface What makes rubber bands stretchy? It seems like a question with an obvious answer, but perhaps obvious in the vein of answers to questions like…

2017 17 pieces
  • Black Holes, Peach Trees, Towels, and a Keychain

    Write a short story based on those four keywords. Seriously (prompt suggested by a friend).

  • Paradise Is a Kind of Library

    What is your favorite quote of all time? What gives it that status? Being satisfied with my response, I decided to ask her, “So what’s your favorite quote?”…

  • Spirographs, Hypotrochoids, and Chaos

    x = lambda d,r,R,theta: (R-r)*np.cos(theta) + d*np.cos(((R-r)/r)*theta) y = lambda d,r,R,theta: (R-r)*np.sin(theta) - d*np.sin(((R-r)/r)*theta) Let's set…

  • Introduction to Thermostatistics and Macroscopic Coordinates

    A Coarse Description of Physics Thermostatistics lies at the intersection of thermodynamics and statistical mechanics. Thermodynamics is the study of the…

  • Entropy and the Fundamental Laws

    Like every field of physics worth its salt , thermodynamics has, at its heart, some fundamental, unchanging principles dubbed “laws.” Thermodynamics has…

  • Thermodynamics and Thermostatistics

    Introduction It can be argued with some vehemence that thermodynamics is just about the most boring field of study in all of physics. With all due respect…

  • A Python Script to Pick Me Outfits Based on the Weather

    [dropcap]T[/dropcap] here’s a well-supported theory in psychology called “decision fatigue,” which predicts that your decision-making ability goes down as…

  • 3D Printing Molecular Models for the Scientists That Discovered Them

    First, a quick life update: for the past two weeks, I've been working as an intern for the Chemical and Biophysical Instrumentation Center at Yale. This…

  • Zipf's Law and Your Facebook Messages

    A lot of social media platforms have a bad tendency to give out your personal data to advertisers. Luckily, they’re usually kind enough to give you some of…

  • Confused Words

    [dropcap]Lots[/dropcap] of English words have more than one distinct definition. You probably already know these words as homonyms, but we’re going to be…

  • Monte Carlo Petals

    I finished finals today, and I’m pretty glad; it’s been a long, grueling spring semester and summer should prove one hell of a reward this time around.

  • Colorless Green Ideas Sleep Furiously

    [caption id="attachment_805" align="alignright" width="209"] *Chomsky’s linguistics ideas and philosophy deserve textbook-sized analyses in their own right…

  • The Madelung Constant Finder

    Note: This is a follow-up to my post on the Madelung constant (it's for NaCl). If you don't know what that is yet, take a look at it here . I wrote the…

  • Ranking the Word Endings

    What’s the best word ending for maximizing the number of single letters that could go before it? I made a list. So far it looks like -at is the winner here,…

  • Fargo and Reverse Role Models

    Movies and Role Models I saw Fargo the other day (now one of my all-time favorites), and while the movie was full of enduring moments, one scene in…

  • Madelung - The Realest Abstraction

    If you’ve done any physics work before, you might have noticed that the formulas tend to include a lot of constants : the speed of light, Planck’s constant,…

  • The Analog Elevator Brain

    I remember watching a video a while back that poked fun at how uncomfortable people were wi th the idea of a machine having control over their immediate…