#strontium90
Live, measured metrics for the hashtag #strontium90 from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #strontium90
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 · mastodon.online (Mastodon public tags API) · fetched 2026-10-04 11:42 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.online (Mastodon public search API) · fetched 2026-10-04 11:42 UTCNo related tags with measured usage found for #strontium90.
Live pulse
measured · mastodon.online (Mastodon tag timeline) · fetched 2026-10-04 11:42 UTCEverything below is measured over the latest 6 public posts (spanning ~25935 hours).
Posting hours (UTC)
Languages: English (6)
Avg boosts / post: 6
Top of the latest posts
💁🏻♀️ TIL: ☢️📱 Old #smartphone cameras with CCD sensors can “see” #beta #radiation as actual spots of #light. Pointed at a Strontium-90 source in darkness, the #camera registers high-speed #electrons smashing into the sensor. Scientists
Strontium-90 (Sr-90) and cesium-137 (Cs-137) are radioactive isotopes that didn’t exist before the 1940s. In art forensics, if a painting claimed to be from before 1945 contains trace amounts of these isotopes in the paint or other material
#Japan announces date for #Fukushima #radioactive #water release August 2023 "As of 8 June 2023, there were 1,335,381 cubic meters of radioactive wastewater stored in tanks, but due to the failure of the #ALPS (Advanced Liquid Processing Sy
What “strontium90” means
Wiktionary · Wikipediastrontium/ˈstɹɒn.ti.əm/
- nounThe metallic chemical element (symbol Sr) with an atomic number of 38. It is a soft, reactive, silvery alkaline earth metal.
Strontium is a chemical element; it has symbol Sr and atomic number 38. An alkaline earth metal, it is a soft silver-white yellowish metallic element that is highly chemically reactive. The metal forms a dark oxide layer when it is exposed to air. Strontium has physical and chemical properties similar to those of its two vertical neighbors in the periodic table, calcium and barium. It occurs naturally mainly in the minerals celestine and strontianite, and is mostly mined from these.
“Strontium” on Wikipedia (CC BY-SA) →#strontium90 across platforms
every network with a public tag surfaceFollow #strontium90 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/strontium90