#博物学习
Live, measured metrics for the hashtag #博物学习 from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #博物学习
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Day-by-day usage
measured · fosstodon.org (Mastodon public tags API) · fetched 2026-08-22 05:10 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 2026-08-22 05:10 UTCNo related tags with measured usage found for #博物学习.
Live pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-08-22 05:10 UTCEverything below is measured over the latest 40 public posts (spanning ~6915 hours).
Posting hours (UTC) — busiest: 16:00
Languages: Chinese (40)
Avg boosts / post: 0.2
Top of the latest posts
#博物学习 本周 #云 继续读《the cloudspotter’s guide》第十三章：The morning glory. 维基百科上的翻译叫做“晨辉”. https://en.wikipedia.org/wiki/Morning_Glory_cloud 它本质是一种层积云（Stratocumulus），见 https://1234.as/@zero/107394657775831717 ，但是像卷轴一样，也叫做“roll cloud”. 在世界上很多地方都有可能出现（
#博物学习 本周 #云 继续读《the cloudspotter’s guide》第十二章：contrail. contrail 就是 condensation trail，是飞机飞过天空后气体冷凝形成的尾流，看上去就是一条直线样子的云. 飞机飞过并不总是会产生 contrail，如果那里空气温暖干燥，水汽来不及形成冰晶就蒸发了，就不会形成 contrail；如果空气寒冷潮湿，那就会形成 contrail，甚至扩散缓慢，一条 contrail 能保持好几个小时都有可能. 因此
#博物学习 本周 #云 继续读《the cloudspotter’s guide》第十一章：其他云. 这章开始就是一些值得单独讲的补充性的内容. 这一章是附属云（accessory clouds）、附加特征（supplementary features）、以及高层大气云（upper atmospheric clouds），其实内容比较无聊，就是报菜名而已. 附属云请看：https://cloudatlas.wmo.int/zh-hans/principles-of-cloud
#博物学习 across platforms
every network with a public tag surfaceFollow #博物学习 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/博物学习