#ultrasound
Live, measured metrics for the hashtag #ultrasound from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #ultrasound
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 2026-09-09 02:36 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 2026-09-09 02:36 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-09-09 02:36 UTCEverything below is measured over the latest 40 public posts (spanning ~2562 hours).
Posting hours (UTC) — busiest: 09:00
Languages: English (40)
Avg boosts / post: 0.8
Top of the latest posts
Stupid or genius: Because radio frequencies are heavily regulated, why not use sound waves above human hearing range for wireless communications? Consumer sound interfaces go up to 192 kilohertz, providing 20-96 kHz inaudible transmission b
@screwlisp @AmenZwa @dougmerritt You can test the high frequency response of your microphone by smashing a fork and a tablespoon together. Or two forks. Or two tablespoons. I don't remember. The more annoying, eardrum-piercing the sound is,
Anyone got any experience with portable, at home #ultrasound machines for injury recovery? On that #ChronicInjury timeline.
What “ultrasound” means
Wiktionary · Wikipediaultrasound
- nounSound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz.
- verbTo treat with ultrasound.
Ultrasound is sound with frequencies greater than 20 kilohertz. This frequency is the approximate upper audible limit of human hearing in healthy young adults. The physical principles of acoustic waves apply to any frequency range, including ultrasound. Ultrasonic devices operate with frequencies from 20 kHz up to several gigahertz.
“Ultrasound” on Wikipedia (CC BY-SA) →#ultrasound across platforms
every network with a public tag surfaceFollow #ultrasound 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/ultrasound