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清式營造則例

梁思成 Wiki

高空擾動 Upper-air disturbance

 HKO FB 高空擾動 500 hPa prediction HKO ECMWF 500hPA prediction . Choose dimension as east asia. For 19 jan 2026 Himawari 9 realtime infrared image 鄭明典FB 冷高壓 中心氣壓仍維持1070左右,此高壓中心看起來是緩慢往東南方向移動! 但是追蹤低層冷空氣流向,主要的冷空氣受東側大低壓的影響,仍然是偏東出海,預期日、韓會有一波嚴寒的低溫,部分冷空氣往南,中國多數地方都發布寒潮與降溫預警。 這一次影響台灣的冷空氣可能要經過黃海、東海,在海面時間長,空氣相對潮濕。但是預期的降雨,還包括冷空氣上方的西風帶來的水氣,時間是20日晚間之後,這部分的水氣才是高山降雨的主要水氣來源。 21/1: 今晨,福建西部、江西南部、广东北部、广西、贵州西南部等地部分地区出现6~10℃降温,广西局地达12~14℃。气温0℃线位于贵州南部、湖南南部至江西中部、浙江北部一带。 气象专家提醒,寒潮天气已接近尾声,但低温状态还将持续一段时间。未来10天,新疆北部、内蒙古、东北地区、华北东部、黄淮、江汉、江淮、江南西北部等地平均气温将较常年同期偏低2~3℃,局地偏低4℃以上。 另一方面,日本,南北韓寒流則剛剛開始 KMA

Spitfires in HK

RAF Kai Tak wiki 81 squadron  small detachment  132 squadron   RAF-in-combat RHKAAF There are many variants, XIV , XIX, FR.18,  F.24 etc Final flight, according to  gwulo , two PR.Mk.19 models PS852 and PS854, and two F.24 VN318 and VN485 Some history in FB Display in   statue square , Kai Tak Ethos VN485 F.24(Mk24) in FB , now in IWM Duxford  In Kai Tak Crash gwulo Decals: Asisbiz RNAS kai tak

2026 有趣天象

 From 月面環形山 ZY-LunarCrater 上海天文館

Lazuli space observatory

 3M TMA Among the instruments aboard Lazuli is a camera with 23 CMOS detectors, each of which will be outfitted with fixed filters (both broadband and narrowband) covering wavelengths spanning the visible to near-infrared range (400 to 1,700 nanometers). The observatory will also have an integral field spectrograph, which takes spectra across an entire image as well as a coronagraph, a mask that blocks bright sources to enable detection of fainter ones. Supriya Chakrabarti (University of Massachusetts, Lowell), whose team has contributed to Lazuli, is excited to use that capability to directly image exoplanets around nearby stars. Lazuli is not a Hubble replacement. But it does offer competitive advantages, drawing on technology that is 20 years more advanced than what is onboard the iconic observatory. The announcement of the ambitious Schmidt Observatory System, one of the biggest releases to come out of last week’s American Astronomical Society meeting in Phoenix, Arizona, comes...

Soc camera from landingfield

  Wordpress SOC FPGA: Zynq7015

Pinefeat EF lens to raspberry pi

 From pinefeat uk Using libcamera, V4L and so on Github I think should be good fot macro photography, where you want to have focus stacking. Of course astrophotography  Reddit

錦田打礁的彬竹棚结構

  主力结橋 primary structure: 為中央部份杉木柱 (136枝垂直,共189枝) 及斜撐的杉木柱 加以鋼纜harness在地面 Subsidiary support輔助支撐: 竹枝,達3萬多枝 From 香港採古fb

分裂極渦 split polar vortex

  5/1/2026 「分裂極渦影響」,鄭明典貼出一張圖說,這是500百帕高度場(線條)和溫度場(底色)。日本北方一個大低壓,這個低壓內部完全是偏低溫的冷空氣(灰色到白色),而且越近中心越冷,這是極渦的特徵,所以這是個分裂極渦! msn Weathernews jp twitter Watchers   HKO 500 hpa chart

OG tech startracker v2 歐極星

  Assembly Bilibili   Printables Github   1.4 kg Payload 4 kg

OpenAstroExplorer

 Intro from cuiv Pretty portable @ 3kg,excluding tripod etc. 5 kg payload. Must try for DIYers. Online Fusion 3D view Shop OAT YouTube channel Github

Chocolate: flavanol and heavy metals

From YouTube: Flavanol Toxicity

JY-27 VHF meter wave radar

 Oct 2025 YouTube   Located near coastal area , GTVC Torres Finol JY-27 radar of the Chinese manufacturer CETC is a fully solid-state and fully coherent long-range early warning system. It is designed and developed to provide early warning information and detect low-observable air targets in so-called “Stealth Technology”. Besides, it provides the early warning information for weapons system as well. The newer one antenna design is clearly influenced by the 1L13 Nebo SV “Box Spring” and 1L119 Nebo SVU. The radiating elements are horizontally polarized. Frequency: 240 - 390 MHz Instrument range: 280 - 390 km Venezuela allegedly can detect stealth F-22 in 2020 Destroyed in 3 Jan 2026 How US jets beat YouTube Geoconfirmed Huawei phone leak? Full breakdown of maduro raid Reference: Baike

Stainless steel flask from Mainland

 After ~ 1 month of use: Black oil/ink appears from inner side. Oil ? Rust? Residue from Manufacturing process, eg polishing? Recycled steel? Heavy metals? Definitely not food grade!!! This quality label QB/T2332-97 means nothing