Education
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Pegs and 'Tails
A blog on seventeenth and eighteenth century English and Irish furniture, with image galleries, cabinetmakers' history a…
Pendulums in HTML5
A browser simulation of a simple pendulum built with rational trigonometry, showing the swing animated in HTML5 for a ha…
Penguin First Editions
A collector's reference to early Penguin paperbacks, with an A-Z index of the illustrators, artists and designers behind…
Penguin Series Design
A lovingly assembled gallery of Penguin and Pelican book covers through the decades, with notes on the designers, illust…
Penn Museum Voices
The Penn Museum's blog of articles on archaeology and anthropology, with stories about ancient Egypt, Greece, Mesopotami…
Penny Dell Puzzles
A veteran puzzle publisher's site offering free playable crosswords, word searches, and logic puzzles drawn from decades…
People met in hotel lobbies
Selections from a Gilded Age Washington Post column that reported on whoever was spotted in the city's hotel lobbies, fu…
People of Influence Painting
An image-map painting of 103 famous people who changed the world, with mouse-over name tags and a link from each figure…
People's Graphic Design Archive
A crowd-sourced virtual archive of graphic design history built by everyone, collecting posters, zines, signage and ephe…
Perfect Ear Audio Training
A free browser ear trainer that plays boosted frequency bands and asks you to name them, helping musicians and sound eng…
Perfectionism and Procrastination
A clear, research-informed explanation of how perfectionism feeds procrastination and what to do about it, from a site d…
PerfectPitch
A pitch recognition trainer from a maker of digital toys and music games, where you practice identifying notes by ear in…
Periodex
An elegant, responsive periodic table of the elements that lets you tap any element to explore its properties, a quick a…
Periodic Table - Ptable
An interactive periodic table showing properties, electron configurations, isotopes, and compounds for every chemical el…
Periodic Table in Pictures and Words
An interactive periodic table that pairs each element with a picture and a plain-language description of where it is fou…
Periodic Table of Elements
An interactive periodic table of the chemical elements with a page for each one covering atomic properties, history and…
Periodic Table of Elements
An interactive periodic table of all 118 elements with a live temperature slider showing states of matter, element compa…
Periodic Table of Tools
An interactive periodic table of physical tools, from hammers and other hitting devices to saws and cutters, browsable b…
Periodical Cicada Information Pages
UConn's reference pages on 13- and 17-year periodical cicadas, explaining their strange life cycle, the different broods…
Perlin Noise in p5.js
A hands-on tutorial on Perlin noise in p5.js, walking through 1D, 2D, and 3D noise with code sketches such as animated c…
Perry-Castañeda Library Map Collection
The University of Texas's public map library, offering thousands of digitized historical and political maps of every wor…
Persepolis Reimagined
An immersive 3D web tour of the ancient Persian capital Persepolis at its height under King Xerxes, rendered in WebGL by…
Perseus Digital Library
A vast open digital library of Greek and Roman classical texts in their original languages alongside English translation…
Pessimists Archive
A newsletter and archive collecting historical moral panics over new technologies, told through old newspaper clippings…
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