#ultraviolet
Live, measured metrics for the hashtag #ultraviolet from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #ultraviolet
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.social (Mastodon public tags API) · fetched 2026-09-25 23:43 UTCNo measured public usage for #ultraviolet in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-09-25 23:43 UTCNo related tags with measured usage found for #ultraviolet.
Live pulse
measured · Mastodon tag timeline · fetched 2026-09-25 23:43 UTCNo recent public posts found for #ultraviolet on Mastodon. Nothing measured, so nothing shown.
What “ultraviolet” means
WikipediaUltraviolet radiation is electromagnetic radiation of wavelengths of 100–400 nanometers, shorter than that of visible light, but longer than X-rays. Wavelengths between 10 and 100 nanometers are called extreme ultraviolet and share some properties with soft X-rays. UV radiation is present in sunlight and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs, Cherenkov radiation, and specialized lights, such as mercury-vapor lamps,
“Ultraviolet” on Wikipedia (CC BY-SA) →#ultraviolet across platforms
every network with a public tag surfaceFollow #ultraviolet 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/ultraviolet