#Hydrogen
Live, measured metrics for the hashtag #Hydrogen from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #hydrogen
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 2026-09-16 12:06 UTC9 uses by 9 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 2026-09-16 12:06 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-09-16 12:06 UTCEverything below is measured over the latest 40 public posts (spanning ~1031 hours).
Posting hours (UTC) — busiest: 10:00
Languages: English (35) · German (3) · Catalan (1) · Dutch (1)
Avg boosts / post: 1.5
Top of the latest posts
Sicherheitsbedenken, umfangreiche Umbauten und ein Unfall Ende 2025 haben Lindes Produktion von grünem #Wasserstoff im Chemiepark #Leuna um Jahre verzögert. Der 2021 angekündigte PEM-Elektrolyseur sollte bereits 2022 starten und jährlich ru
#hydrogen101 #H2safety 💥Birthday party balloons filled with hydrogen exploded in a Bali restaurant on Sunday 30Aug2026, sparking an inferno. More dangerous fall-out due to the Strait of Hormuz driving up helium prices! https://bit.ly/4gC0U
I don’t normally link to Twitter, but this is what Joe Biden would call a BFD: #science #climate #california #hydrogen https://x.com/CJHandmer/status/2084709069013778483
What “hydrogen” means
Wiktionary · Wikipediahydrogen/ˈhaɪdɹədʒ(ə)n/
- nounThe lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.00794.
Hydrogen is a chemical element; it has the symbol H and atomic number 1. It is the lightest and most abundant chemical element in the universe, constituting about 75% of all normal matter. Under standard conditions, hydrogen is a gas of diatomic molecules with the formula H2, called dihydrogen, or sometimes hydrogen gas, molecular hydrogen, or simply hydrogen. Dihydrogen is colorless, odorless, non-toxic, and highly combustible. Stars, including the Sun, mainly consist of hydrogen in a plasma st
“Hydrogen” on Wikipedia (CC BY-SA) →#hydrogen across platforms
every network with a public tag surfaceFollow #hydrogen 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/hydrogen