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Physically Based Rendering in Filament

**Physically Based Rendering in Filament** ![](images/filament_logo.png) # About This document is part of the [Filament project](https://github.com/google/filament). To report errors in this document please use the [project's issue tracker](https://github.com/google/filament/issues). ## Authors - [Romain Guy](https://github.com/romainguy), [@romainguy](https://twitter.com/romainguy) - [Mathias Agopian](https://github.com/pixelflinger), [@darthmoosious](https://twitter.com/darthmoosious) # Overvi

Show HN: Mathpad – Physical keypad for typing math symbols

Back this project to help bring it into existence. Funding ends on Sep 11, 2025 at 04:59 PM PDT. Mathpad is a specialized keypad that makes typing mathematical equations as simple as typing regular text. With over 100 mathematical symbols at your fingertips, this compact and powerful device eliminates the frustration and inefficiency of typing math on a computer. What if Mathematical Symbols Were as Easy to Type as Regular Letters? After 3 years of development, Mathpad finally makes this drea

Show HN: Mathpad – Physical keypad for typing 100+ math symbols anywhere

Back this project to help bring it into existence. Funding ends on Sep 11, 2025 at 04:59 PM PDT. Mathpad is a specialized keypad that makes typing mathematical equations as simple as typing regular text. With over 100 mathematical symbols at your fingertips, this compact and powerful device eliminates the frustration and inefficiency of typing math on a computer. What if Mathematical Symbols Were as Easy to Type as Regular Letters? After 3 years of development, Mathpad finally makes this drea

The (Unfinished) PDE Coffee Table Book

THE (UNFINISHED) PDE COFFEE TABLE BOOK Lloyd N. Trefethen and Kristine Embree, editors Unpublished, 2001 During 2000-2001 a group project based in the Oxford University was begun to write this book. The vision was 100 2-page spreads, each one giving exactly the most useful possible starting information about a different partial differential equation, with beautiful color illustrations. Many people at Oxford and around the world contributed drafts, which were then extensively rewritten and e

Infinite Grid of Resistors

Infinite Grid of Resistors Remain, remain thou here, While sense can keep it on. And, sweetest, fairest, As I my poor self did exchange for you, To your so infinite loss, so in our trifles I still win of you: for my sake wear this... Shakespeare There is a well-known puzzle based on the premise of an “infinite” grid of resistors connecting adjacent nodes of a square lattice. A small portion of such a grid is illustrated below. Between every pair of adjacent nodes is a resistance R, and w