#Ptolemy
Live, measured metrics for the hashtag #Ptolemy from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #ptolemy
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · fosstodon.org (Mastodon public tags API) · fetched 2026-11-08 12:12 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · fosstodon.org (Mastodon public search API) · fetched 2026-11-08 12:12 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-11-08 12:12 UTCEverything below is measured over the latest 40 public posts (spanning ~31903 hours).
Posting hours (UTC) — busiest: 03:00
Languages: English (40)
Avg boosts / post: 1.4
Top of the latest posts
On a cloudy day in January, historian Ivan Malara sat in Italy’s National Central Library of Florence poring over seven 16th century printings of the ancient world’s most influential astronomy text. The pages belonged to The #Almagest, in w
One of my favorite atlas -- the 1513 Strasburg edition of Ptolemy's Geography, with maps by Martin Waldseemüller, printed by Johannes Schott, with some maps in color!!! - has been imaged by Osher map Library and is available online at https
Now we need to look back in time to the classical understanding of the world. How better to do that than with Ptolemy's map of the world known to him at the time? None of Ptolemy's maps survived into the medieval world, but his list of plac
What “ptolemy” means
WikipediaClaudius Ptolemy, better known mononymously as Ptolemy, was a Greco-Roman who wrote about a dozen scientific treatises, three of which were important to later Byzantine, Islamic, and Western European science. The first was his astronomical treatise now known as the Almagest, originally entitled Mathēmatikḗ Syntaxis. The second is the Geography, which is a thorough discussion on maps and the geographic knowledge of the Greco-Roman world. The third is the astrological treatise in which he attempte
“Ptolemy” on Wikipedia (CC BY-SA) →#ptolemy across platforms
every network with a public tag surfaceFollow #ptolemy straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/ptolemy