~ The Side Nerd Blog, Main Nerd ~The interactive companion to Post No. 01, The curled torus burps« Read it in plain languageRead the technical editionSponsored by Side Nerd Apps

RecreationalPhysics · companion to "The curled torus burps", plain-language edition

The Tube's Curling Ladder

Turn the toy's knobs yourself. The exact numbers follow you to any setting. The measured results appear only where the simulations ran.

Exactarithmetic on the model, true at any setting Measureda simulation the paper reports Not runoutside what the paper simulated
1.25
1.50
dots N
λ = 1.25, g = 1.5, N = 96

The ladder

ExactThree arrangements of the same dots. Each rung curls one more direction, and the knob sets what curling costs.

The push

ExactThe two cheapest ways out of a perfect tube, priced swap by swap. A missing square costs 16; a surplus square removed refunds 4λ.

The wait

ExactIn a bath, a sweep offers three route-A exits and two route-B exits on average. That count predicts the mean wait for the first exit, with nothing fitted.

The change

MeasuredThe map: every setting of the knob from 1.05 to 1.45, at warmth 1.5, four sizes from 64 to 192 dots, thirty tubes each.

Show the numbers

Sealed: is the push enough?

No bath. One store holds a fixed budget, and the tube can spend only that.

12.0
ran: 4, 8, 10, 11, 11.5, 12, 13, 16 at λ = 1.25

Sealed: where the burp goes

MeasuredThe released energy lands in stores beside the network. Few stores concentrate it; many spread it thin. Twenty tubes at each setting, λ = 1.25.

number of stores
ran: all seven, at 64, 96 and 192 dots
sheet-like in between melted
Show the numbers

What remains

The change usually leaves a scrap: four dots of the old tube that never opened.

What this page leaves out

This page covers the paper's one change: a tube with one curled direction opening into a flat sheet, in a network with four links per dot. Three and four directions, ties between directions, and dots treated as interchangeable are outside the paper, and a separate version of the ladder covers them.

Every measured number here is from the technical paper's tables or the project's recorded result files, at the sizes and settings stated. Nothing is claimed beyond them. The clock counts sweeps of attempted swaps, not seconds. No physicist has reviewed this page.

« Back to the postAll postsSign the guestbookSponsored by Side Nerd AppsText and figures © 2026 Emily Smith. No physicist has reviewed this work. A toy model shows what is possible within a class of models, nothing about the real universe. Report a mistake.