articles and knowledge

A 120-page biography of Thomas Edison's inventions — the phonograph, the light bulb, early film and the Current Wars — and how they still shape modern life. Here's what's inside, who it's for, and where to read it on Google Play Books.

An engineering guide from the Advanced Mobility Engineering Series covering ETCS/ERTMS, CBTC and Positive Train Control, the systems that keep modern trains safely apart. On Kindle and in paperback.

A full review of Little Wuxia Stickers: 139 original chibi Wuxia stickers in 10 packs, 20 characters, an iMessage sticker pack, a custom sticker keyboard and Home Screen widgets. Free to start with no account needed.

A review of NCLEX NursePrep Coach for Android: NCLEX-style questions across 14 nursing categories, Next Generation NCLEX case studies, detailed rationales, flashcards, mock exams and readiness analytics. Free on Google Play.

A review of the Grade 9 (M.3) Social Studies practice app by ChatStick: 1,000 questions covering all 5 strands of Thailand's core curriculum, detailed explanations, hints, a mistake notebook, Smart Review and mock exams. Works offline. Free on the App Store.

A 92-page technical guide to AI compilers — MLIR, Apache TVM, XLA, LLVM and Triton — from graph-level IR to code generation for TPUs, Apple Neural Engine and AWS Inferentia. Here's what's inside, who it's for, and where to read it on Google Play Books.

An engineering guide from the Energy Systems Engineering Series covering PEM fuel cells, water electrolyzers and the infrastructure behind green hydrogen. On Kindle and in paperback.

A full review of New Year Chaos Stickers: 108 hand-drawn New Year stickers in 8 themed packs, from countdown chaos to after-party recovery. Use them in iMessage, a sticker keyboard and widgets. Start free with 3 full packs.