#hohlraum
Live, measured metrics for the hashtag #hohlraum from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #hohlraum
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 2026-08-12 15:38 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 2026-08-12 15:38 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-08-12 15:38 UTCEverything below is measured over the latest 6 public posts (spanning ~30514 hours).
Posting hours (UTC)
Languages: German (4) · English (1) · Spanish (1)
Avg boosts / post: 0.2
Top of the latest posts
Wegen Fahrbahnschäden muss die Abfahrt von der Severinsbrücke ab Montag gesperrt werden. Dort ist ein Hohlraum aufgetreten.#WDR #Severinsbrücke #Köln #Abfahrt #Sperrung #Hohlraum #Bauarbeiten #Brücke #NRW Hohlraum unter der Fahrbahn: Abfahr
Im November stürzte ein Pferd im Aachener Wald in ein Loch. Forscher sind jetzt sicher, die Ursache gefunden zu haben.#WDR #Aachen #Pferd #Rettung #Feuerwehr #RWTH #Krieg #Loch #Hohlraum #NRW Pferd stürzte im Aachener Wald in einen Hohlraum
Großer Schreck für eine Reiterin im Aachener Wald: Plötzlich versinkt ihre Stute in einem Hohlraum und muss gerettet werden.#WDR #Aachen #Wald #Pferd #Erdloch #Hohlraum #Rettung #Feuerwehr #NRW Pferd versinkt plötzlich in einem Erdloch im A
What “hohlraum” means
WikipediaIn radiation thermodynamics, a Hohlraum is a cavity whose walls are in radiative equilibrium with the radiant energy within the cavity. First proposed by Gustav Kirchhoff in 1860 and used in the study of black-body radiation (Hohlraumstrahlung), this idealized cavity can be approximated in practice by a hollow container of any opaque material. The radiation escaping through a small perforation in the wall of such a container will be a good approximation of black-body radiation at the temperature
“Hohlraum” on Wikipedia (CC BY-SA) →#hohlraum across platforms
every network with a public tag surfaceFollow #hohlraum 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/hohlraum