A Astor
 

Learn anything. Even the hard things.

Complex ideas — physics, math, code, music — drawn by hand and set in proper type, at your level. A book that answers back.

Download for Mac Free for the first volume.
~ 60s to set a volume
Astor — your library, with this week's featured volume and shelf of essays.
The Library. Monday morning. Plate I A shelf of what you're learning.
Nothing is too hard to understand — only poorly explained.
A. Linwood The Editor · Spring MMXXVI
The atelier, in three motions i — iii of vii
i.

Ask anything.

Physics, math, music, code, history, philosophy. A line will do — the harder the better.

ii.

It draws. It sets type.

Diagrams in the style of a 19th-century plate. Math set properly. Code where the subject earns it. At your level — curious, familiar, or expert.

iii.

It answers back.

Highlight any sentence. The page replies in the margin — in the voice of the text, never your assistant's.

Plate II  ·  An illustration The Last Light — on what stars die into.
Drawn by hand

Hard ideas, made visible.

Diagrams in the style of a 19th-century natural-history plate — drawn for the page they sit in. Never stock. Never generic.

Cross-sections. Phase portraits. Schematic engines. Binding-energy curves. The mathematics, set in proper math. The code, where the subject earns it.

StyleEngraved · ink on cream wove
MathematicsSet properly · real LaTeX, no images
SubjectsPhysics · math · code · music · &c.
A plate from The Last Light — the remnant of a neutron star, drawn from the inside out.
Pl. IV  ·  The remnant Sanduleak has so far refused to reveal. from The Last Light
Plate III  ·  A volume, open The Last Light — iron, neutrinos, the engine of a star.
Set in proper type

At your level. In your voice.

Drop caps. Pull quotes. Diagrams set inline where the prose calls for them. Equations rendered as math, not screenshots.

Choose the length, the level, the voice — the same subject rewrites itself for the room you brought.

Length An essay · A sitting · An evening · A weekend
Level Curious · Familiar · Expert
Voice Precise · Narrative · Practical
The Last Light, open on a chapter with a binding-energy curve and E=mc² set in proper math.
In the margin

Ask the book anything.

Highlight a sentence. The book replies in the margin — in the voice of the page.

No prefaces. No “great question.” The answer is part of the volume from the moment you ask.

Thread  ·  The Diesel Cycle just now
“fine carbonaceous particles that escape the cylinder if combustion is not complete.”
You
how is the temperature controlled?
The Margin
It isn't, directly. Peak temperature is a consequence of the compression ratio. Engineers nudge it: EGR dilutes the charge; retarded injection moves combustion later into the stroke.
Reply…
A sample of the shelves this month

People are reading

supernovae & what comes after· the Diesel cycle· Fermat's last theorem· neutron stars, from the inside out· Brunelleschi's dome· Postgres internals· Cantor's infinities· how a sonnet works· the event loop· cryptography by hand· the well-tempered clavier· Wittgenstein on language· Borges & the labyrinth

… or anything else.

The opposite of an infinite feed is a finished book.
From the editor's table

Two ways to keep a shelf.

Cancel any time — the volumes remain yours, exported in proper type.

Vol. I

The Curious

$12/ month, billed annually
  • Essays whenever curiosity strikes
  • Margin conversation, in full
  • Three levels — Curious, Familiar, Expert
  • Three voices — Precise, Narrative, Practical
  • PDF & EPUB export, properly set
Begin free for the first essay
Now in private release · for Mac

Pull a volume.

The hard things, made clear — drawn, set in proper type, and ready to read in a minute. Free for your first.