Hello!! It's Joseph

  我們每天所感受到的太陽光其實也是電磁波的型態，所以在公告中所提到的太陽磁波指的就是太陽表面所發出的電磁波。在太陽每天日夜不間斷所發散出來的電磁波當中，波譜除了包括耳熟能詳的可見光、紫外線、紅外線以外，還包括了微波和衛星電視訊號的波段(頻率為GHz，波長小於1公分)。這些波段的訊號沒有像可見光或是紫外線的強烈，平時當通訊衛星利用這些頻段從軌道上將訊號傳送回來時，太陽所發出的電磁波強度就自然而然成了通訊時的背景雜訊。 但是當地球上的地面接收站、人造衛星以及太陽連成一線時，對地面接收站而言，原本只是被當作背景輻射的電磁波訊號就有機會增強到和人造衛星所發送出來的訊號強度接近，甚至比衛星訊號還要強。在這樣的情形下，地面接收設備在進行訊號處理時，就沒有辦法正確分析出所要的資訊(聲音、畫面或是訊息)，而造成短暫的訊號中斷。 　因為提供衛星服務的業者所使用的衛星都不一樣，所以會受到影響的時間點和也不會一樣。以有線電視為例，可能這個頻道訊號短暫中斷，其他的頻道都還是可以正常收視。不過，人造衛星和地球在軌道上運行的速度都相當的快， 訊號中斷的時間也相當的短暫，多為數分鐘到十幾分鐘 。但如果剛好那時候要進行重要資料傳輸，或是新聞現場的即時連線，那就會形成較顯著的影響了。 既然如此，為什麼這樣的現象只有在春分和秋分附近會發生呢？這是因為地球的自轉軸傾斜了約23.5度，而負責擔負衛星通訊的人造衛星又多半都在地球赤道面上的同步衛星軌道(高度約36,000公里)。從圖四的示意圖可以看到，因為春分與秋分時，太陽直射地球的赤道地區，因為才有機會讓地面接收站、人造衛星和太陽連成一線。反而是夏至跟冬至的時候，太陽分別直射北半球和南半球，所以運行在赤道面上的人造衛星就不受到太陽所發出的電磁波影響了。 　以台灣地區所在的緯度為例，因為位在北緯約23-24度左右，配合太陽的相對位置(直射赤道偏南位置時)，所以上半年的訊號干擾會發生在春分之前(三月初)，而下半年的訊號干擾則會發生在秋分之後(十月初)。如果有興趣，可以在這兩多時間留意電視台的公告，也可以連上部份通訊衛星的網站，查詢預估受到影響的時間。 　結語：有線電視頻道受到干擾，是因為地球、人造衛星與太陽運行所產生的自然現象。可不是因為太陽表面的太陽黑子或是太陽風暴所產生的劇烈太空天氣變化所造成的影響。 himawari 向日葵 衛星 每年春分及秋...

19:46 HKT ( below horizon, invisible in HK) before dawn:   Btw, HKO listed this conjunction, though it's not visible in HK. At least HKO better mention when it occurs below the horizon.

14 sep 2025 HKO weather forecast for coming week: Himawari 9 link Forecast  3 scenarios basically cover almost all normal possible outcomes , to east, to west, or just weaken 現時持續影響本港的高溫天氣將隨著下週驟雨增多而有所緩解，而下週南海的低壓系統活動亦轉趨活躍。 第一個低壓系統進入南海後強度較弱，距離廣東沿岸較遠，但與其相關的高空擾動會在下星期一及星期二（9月15及16日）為廣東沿岸帶來驟雨及雷暴。 第二個低壓系統進入南海後距離廣東沿岸較近，不同預報模式的強度及路徑存在分歧。但隨著該低壓系統在下週中後期向北靠近廣東沿岸，該區天氣漸轉不穩定，驟雨亦會增多。 第三個潛在低壓系統與上述兩個系統相比強度最高，會於下週末期間靠近台灣至呂宋海峽一帶，是否進入南海仍有變數。 13 sep update from agora  japan , 氣旋 vortex in Hokkaido  14 sep 16 sep from JMA : low pressure zones in south china seas are slow, or almost stationary  SLW: SLoW STNR: STatioNaRy 17 sep TD Mirasol on pagasa ph 18 sep 11AM from Pagasa ph From HKO: Another (stronger) one is approaching ~ 1 week later

 From newcamera Something is wrong in this list, eg IMX410 was actually used on sony A7 mk III camera in 2018. IMX455 in 2022

甚麼是廿四節氣， 文化藝術層面演譯解讀，沒有一點問題。 但如此解釋節氣就真有問題，理念不清（conceptual wrong)： 「節」代表人文、「 氣」象徵自然，中華民族傳統哲思裡井然嚴密的時間秩序，節氣流轉不息，活潤萬物色彩，自然按季生香。 "Jie" represents humanity, while "Qi" embodies nature. It is a structured temporal order deeply rooted in traditional Chinese philosophical thought. With the transitions of the solar terms, nature comes alive in glorious colours and fragrances. 祗能說是一大堆文字，把節氣胡亂解釋，借題發揮。估計是想指民間風俗中的“四季時令”seasonality吧 Wiki : 古人將黃道劃分4季，12節氣，12 中氣 ，72候。定義3節為一季，約30日為一節，15日為一氣，5日為一候。年、季、節、氣、候。 十二節氣（立春、驚蟄、清明、立夏、芒種、小暑、立秋、白露、寒露、立冬、大雪、小寒） 十二中氣（雨水、春分、穀雨、小滿、夏至、大暑、處暑、秋分、霜降、小雪、冬至、大寒） 將天象、物候、人事統一組織成曆法calendar 。易經中天地人 三才 論 為何隻字不題黃道黃經？ 節氣流轉不息？ （節氣跟氣象大不同）剛剛相反, 是黃道坐標,即黃經上24個定點。 嚴密的時間秩序？基本上每年的時間都不同，所以需要由天文台精密計算後公布。發現這是基於  人民網 唐志強的文章，再 強行 加插自家的描述。 活潤萬物，按季生香？不一定吧，（大自然 mother nature）也可能會帶來豪雨成災，山泥傾瀉，雷電交加，寒風刺骨.... 凡事都有定期， 天下每一事務都有定時。 生有時，死有時； 栽種有時，拔出有時； 殺戮有時，醫治有時； 拆毀有時，建造有時； 哭有時，笑有時； 哀慟有時，跳舞有時； 傳道書3:1-:4 Btw, 祝演出成功 Hkdance HKO UNESCO   教育局 賞二十四節氣 品中華文化 節令  鬥鵪鶉 吳弘道

Chelsea Richard Wong DPreview Matt Irwin Btw, I found that L mount has less choice on 3rd party lensrs than E-, Z- or X- mount cameras. Hopefully this will change in the future. Mar 2025 Chinese lens brands joining L mount alliance

Two days ago(25/8), scrub Tkww Today 27/8: Success Explosion  Rthk Tkww

 In northern Europe  Eclipsewise

 Or also known as hainan coffee. Frying: Cooling: Ingredients: Local hainan or malay green coffee. With parchment? Butter Sugar. Wok fry Drink with condensed milk. Totally defying what a specialty coffee is. Instagram  , YouTube   Facebook  

 1930 Ford model A roadster: Cf Rocksolid , YouTube   1929 Ford model A: Cf classicautomall   Henryford org Audi union 1000: Cf Wiki Unknown: a Chevrolet? Reference: 1928  Model T vs model A Hayes difference between T and A 2014 classic car show HK 上海灘

What is Sorption curve:  water activity and moisture content Meter working principle ( one of many methods) Hair hygrometer to measure relative activity  Diy using digital hydrometer  Aqualab: Role of Water activity in coffee  , ie molding, or mycotoxins  Primecoffea , helenacoffee  is quoting misleading SCA figures from SCA 's "washed arabica green coffee defect poster". But i think this is general guideline, rather than the rule, or standard. ICO : different export countries have different national quality standards  Eg Colombia: <12% Rwanda: 10-12.5% Uganda: <12.5% Italy: <13% (incoming) China: <12% SCAA: 9-13 % from FAO , coffeeresearch Some examples from panama geisha beans in a particular year, with scores of 88 or higher: 8.2 to 11.2 % ( Some  ) ICO say in general, range of moisture content is 8 to 12.5%  Toper Unified Grain Moisture Algorithm (UGMA) Reference: Sciendo  impact of the roast level on chemical composit...

  PL-10: Infrared guided sidewinder: In the late 1990s, Beijing kicked off the transformation with the PL-10, a high-off-boresight, infrared-guided short-range missile rivalling the US AIM-9X Sidewinder and Russia’s R-73 Archer. PL-12: Medium range AESA active radar guided missile: The follow-on PL-12 added a medium-range active radar-guided punch akin to the AIM-120 AMRAAM, gradually giving the PLAAF confidence that it could match or exceed Russian and Western benchmarks. PL-15: AESA ramjet In recent years, the PL-15 — reportedly featuring an AESA radar seeker and solid fuel ramjet propulsion — extended Beijing’s aerial reach further, threatening front-line fighters and support aircraft alike at ranges believed to exceed 200 km. PL-17: 400km range PL-15 The PL-17 upped the ante, with a reported operational range of 400 km, explicitly designed to push back the ‘safe zones’ where American tankers and AWACS typically orbit in support of fighter patrols. 空警-3000 空警-3000，据信搭载了划时代的共形天线技...

  Sogdian： 蘇特 / 粟特 iranian speaking.  Unesco online forum series : Black death: Factsanddetails FB ： "This city was built by the son of the (leader) of the people of Chach (Tashkent), Spadhni by name. He went here then was killed. & the people's representative ?, & the people's representative of the nomads (Alans?), & the lord of Samarkand,..." Located in southern Kazakhstan, the Kangju (康居）site at Arys has been a focal point of archaeological investigations.  Kangju wiki 《魏書·西域傳》 Chach :「者舌」或「柘折」，石國國都，指今塔什干

The Sidereal Period of an object is the time it takes to make a complete circuit of the celestial sphere with  respect to the fixed stars. The Synodic Period is the time required to make a circuit of the celestial sphere  with respect to the Sun - which is also moving eastward among the stars. The synodic period is always  greater than the sidereal period, the difference being due to the apparent motion of the Sun. The sidereal  period of the Moon is the time it takes to go once around the Earth; the sidereal period of a planet is the  time it takes to go once around the Sun. i.e., its orbital period. Worked example on planets: Reference  Nmsu kurt Nmsu nicole Nao jp

 基於  中國國家天文  古代中國土星觀測 唐代僧一行在《大衍历》中进一步提出“五星盈缩历表”，通过数学模型提高计算精度。这里的所谓“盈”就是加速，“缩”就是减速。 “五星盈缩历表”可以理解为在之前“五星入气加减法”的基础上进行再设计的精密数学模型，这也依赖于当时天文观测仪器的进步。其核心是将行星轨道划分为若干区间，标注各区间内行星的平均日行度与盈缩差。然后是修正参数：通过“损益率”（增减速度的比例）和“躔差”（位置偏差）等参数，动态调整行星的实际位置计算。btw, 現今的通勝也繼續沿用此類計算表，但筆者沒提及當中不同時代的演進史。 （隋朝张胄玄造大業曆，始立五星入气加减法，及日应食不食术） 會合周期 Synodic period: 在《五星占》的那个时代，1度是被分为240分，因此，“日行八分”就是“三十分之一度（中国古度，合0.9856º）”，约为0.03285º，而今测值约为0.03346º。二者相差无几。 (照估計，“分”是用來作記錄，計算，而非現今觀測儀器中角度的刻度） Conceptually wrong/misleading here. 古藉 五星占 中 “一終” refers to 會合周期 (synodic period), 但“日行八分”is talking about 恆星周期（sidereal period) These accuracy advances contributed to good record keeping, and good observation skills.  幾千年的完整觀測紀錄 > 歸納整理 > 找出“逆行周期”或 " 兩次“晨始見”的時間 （opposition period)  What type of  instruments( before invention of telescope) used are not mentioned 儀象考成 恆星周期： Present day 1/sidereal period= 1/10755.7=0.0335 degree. But the writer did not elucidate how “日行八分” is derived. And how to find sidereal period...

澳飾嘉Osiza 江門市嘉程商貿有限公司 有CCC 標， QA 及格証 型號 8875/Y1 燈的部份很好 聲控正常 Controller box FH(40-72 W) x2 但 Smartphone app  FanLamp Pro 不能用. Lamp control ok. Fan control not working . Is it copycat clone of Alexa? Remote control ( marking FH-FAN-B) 遙控 DZ款 disassembly pics PCB marking: CC04, 13180 但風扇吵到想死！！！ 6x dB 問題 in here Problem found: the motor has 3 lugs(55,55,75) for positioning to the black vertical mount. Only 2 of lugs can fully, flatly sit on black mount. So the Motor is not sitting properly at right angle to mount!!! Btw， the Motor wirings are fragile. No strain relief at all. Easily tear the wires off the solder joint. I guess the proper connector is missing, to save cost can only say, it's 山寨quality. QC label means nothing. Likely the production line just buy parts from unreliable/ changing sources, who just claim the parts are "standard" and compatible. Which is just talking. Just like the fan lamp controller. Which is actually another version with some feature missing. Caus...