化學博士K Kwong不時在社交平台分享化學知識,近日就談到古人會祭天求雨,原來不是只有迷信,背後有科學解釋。當中關鍵一步就是焚化,即睇點解焚化會導致降雨喇!
古代祭天祈求降雨有得解?
化學博士K Kwong以「古時旱災,好多人會犧牲同男童女,焚身祭天,祈求上天降雨。係咪好愚昧呢?」為引言,帶入為什麼焚化會導致降雨。他解釋若雨雲要形成降雨,首先天上充滿水分飽和的空氣要接觸到「核心 nuclei」,如果空氣沒有塵粒,沒有微細粒子作為核心讓水蒸氣可以集合成液體,則較難形成雨水。
古時祭祀求降雨背後的科學解釋,就是「焚化時製造微碳粒,燃燒嘅時候會製造熱氣,由於熱脹冷縮嘅關係,熱空氣會有較低嘅密度而向上升,造成熱氣流。微碳粒隨住熱氣流上升,遇到上層冷嘅潮濕空氣,就會形成微水滴。隨著微水滴越嚟越大粒,上升嘅空氣不足以將水滴帶返上天,就造成降雨。」
要達到效果的重點是製造微碳粒,而非獻祭童男童女,所以後來的人就改燒禾稈草燒。K Kwong又補充,「之後科學家更發現用飛機或者大砲,將鹵化銀粉末 (例如碘化銀),灑上天空,就可以造成人造雨。聽講拿破崙曾向天開砲,人工造雨,讓雨水形成沼澤阻住敵人前進。」
網民:係沙漠咁做有冇用?
有網民好奇,如果在沙漠燒草又能否影響降雨呢?K Kwong指要有另一因素配合,「要上層空氣濕度夠。」
▼原帖文▼
來源:K Kwong
Array
(
[0] => stdClass Object
(
[title] => 《東張西望》|已婚港女疑陷KK園區情騙!匯錢拯救人質不求回報!男子獲救後咁做忘恩負義...
[articleId] => 20062771
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20062771/%E6%9D%B1%E5%BC%B5%E8%A5%BF%E6%9C%9B-%E5%B7%B2%E5%A9%9A%E5%A5%B3%E7%96%91%E9%99%B7%E6%83%85%E9%A8%99-%E9%99%8C%E7%94%9F%E7%94%B7%E5%94%B1%E6%83%85%E6%AD%8C%E7%94%9C%E5%96%8A-%E5%B0%8F%E5%8F%AF%E6%84%9B-%E5%8C%AF-%E8%90%AC%E5%8A%A9-kk%E5%9C%92%E5%8D%80-%E7%94%B7%E5%AD%90%E8%84%AB%E5%9B%B0-%E7%8D%B2%E6%95%91%E5%BE%8C%E6%85%8B%E5%BA%A6-%E5%BA%A6%E8%BD%89%E8%AE%8A
)
[1] => stdClass Object
(
[title] => 鄭中基離婚|鄭中基余思敏傳離婚 每月贍養費僅得4位數!古天樂9字交代好友近況
[articleId] => 20062586
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20062586/%E9%84%AD%E4%B8%AD%E5%9F%BA%E9%9B%A2%E5%A9%9A-%E9%84%AD%E4%B8%AD%E5%9F%BA%E4%BD%99%E6%80%9D%E6%95%8F%E5%82%B3%E9%9B%A2%E5%A9%9A-%E6%AF%8F%E6%9C%88%E8%B4%8D%E9%A4%8A%E8%B2%BB%E5%83%85%E5%BE%974%E4%BD%8D%E6%95%B8-%E5%8F%A4%E5%A4%A9%E6%A8%829%E5%AD%97%E4%BA%A4%E4%BB%A3%E5%A5%BD%E5%8F%8B%E8%BF%91%E6%B3%81
)
[2] => stdClass Object
(
[title] => LABUBU 3.0香港明日開賣 設限購令!粉絲搶購再掀炒賣潮!盲盒公仔炒價最高達$1500!
[articleId] => 20062833
[permalink] => https://hk.ulifestyle.com.hk/activity/detail/20062833/labubu-%E5%85%A7%E5%9C%B0%E7%8E%87%E5%85%88%E9%96%8B%E5%94%AE-%E9%9A%B1%E8%97%8F%E7%89%88%E7%B4%A2%E5%83%B9-%E5%85%83-%E9%A6%99%E6%B8%AF%E5%8D%B3%E6%97%A5%E8%B5%B7%E7%99%BB%E8%A8%98%E6%8A%BD%E8%B3%BC%E8%B2%B7%E8%B3%87%E6%A0%BC-%E7%B6%B2%E6%B0%91-%E5%8F%88%E5%94%94%E9%96%8B%E5%AF%A6%E5%90%8D%E5%88%B6
)
[3] => stdClass Object
(
[title] => 私院產檢擺烏龍?醫生搞錯胎兒性別誤診患先天病港媽險做人流
[articleId] => 20062816
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20062816/%E5%AD%95%E5%A9%A6%E9%80%B2%E8%A1%8Ct-%E7%84%A1%E5%89%B5%E7%94%A2%E5%89%8D%E6%AA%A2%E6%B8%AC-%E6%8F%AD%E9%86%AB%E7%94%9F%E6%90%9E%E9%8C%AF%E5%AC%B0%E5%85%92%E6%80%A7%E5%88%A5%E9%9A%AA-%E8%90%BD%E4%BB%94
)
[4] => stdClass Object
(
[title] => 港人幾萬蚊裝修舊公屋 整完好似私樓咁靚?網友紛紛大讚:咁高質
[articleId] => 20050576
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20050576/%E6%B8%AF%E4%BA%BA%E5%B9%BE%E8%90%AC%E8%9A%8A%E8%A3%9D%E4%BF%AE%E8%88%8A%E5%85%AC%E5%B1%8B-%E6%95%B4%E5%AE%8C%E5%A5%BD%E4%BC%BC%E7%A7%81%E6%A8%93%E5%92%81%E9%9D%9A-%E7%B6%B2%E5%8F%8B%E7%B4%9B%E7%B4%9B%E5%A4%A7%E8%AE%9A-%E5%92%81%E9%AB%98%E8%B3%AA
)
)
【🎁免費送】HIZERO 輕量級F300潔地機!
Array
(
[0] => stdClass Object
(
[title] => 《東張西望》|已婚港女疑陷KK園區情騙!匯錢拯救人質不求回報!男子獲救後咁做忘恩負義...
[articleId] => 20062771
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20062771/%E6%9D%B1%E5%BC%B5%E8%A5%BF%E6%9C%9B-%E5%B7%B2%E5%A9%9A%E5%A5%B3%E7%96%91%E9%99%B7%E6%83%85%E9%A8%99-%E9%99%8C%E7%94%9F%E7%94%B7%E5%94%B1%E6%83%85%E6%AD%8C%E7%94%9C%E5%96%8A-%E5%B0%8F%E5%8F%AF%E6%84%9B-%E5%8C%AF-%E8%90%AC%E5%8A%A9-kk%E5%9C%92%E5%8D%80-%E7%94%B7%E5%AD%90%E8%84%AB%E5%9B%B0-%E7%8D%B2%E6%95%91%E5%BE%8C%E6%85%8B%E5%BA%A6-%E5%BA%A6%E8%BD%89%E8%AE%8A
)
[1] => stdClass Object
(
[title] => 鄭中基離婚|鄭中基余思敏傳離婚 每月贍養費僅得4位數!古天樂9字交代好友近況
[articleId] => 20062586
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20062586/%E9%84%AD%E4%B8%AD%E5%9F%BA%E9%9B%A2%E5%A9%9A-%E9%84%AD%E4%B8%AD%E5%9F%BA%E4%BD%99%E6%80%9D%E6%95%8F%E5%82%B3%E9%9B%A2%E5%A9%9A-%E6%AF%8F%E6%9C%88%E8%B4%8D%E9%A4%8A%E8%B2%BB%E5%83%85%E5%BE%974%E4%BD%8D%E6%95%B8-%E5%8F%A4%E5%A4%A9%E6%A8%829%E5%AD%97%E4%BA%A4%E4%BB%A3%E5%A5%BD%E5%8F%8B%E8%BF%91%E6%B3%81
)
[2] => stdClass Object
(
[title] => LABUBU 3.0香港明日開賣 設限購令!粉絲搶購再掀炒賣潮!盲盒公仔炒價最高達$1500!
[articleId] => 20062833
[permalink] => https://hk.ulifestyle.com.hk/activity/detail/20062833/labubu-%E5%85%A7%E5%9C%B0%E7%8E%87%E5%85%88%E9%96%8B%E5%94%AE-%E9%9A%B1%E8%97%8F%E7%89%88%E7%B4%A2%E5%83%B9-%E5%85%83-%E9%A6%99%E6%B8%AF%E5%8D%B3%E6%97%A5%E8%B5%B7%E7%99%BB%E8%A8%98%E6%8A%BD%E8%B3%BC%E8%B2%B7%E8%B3%87%E6%A0%BC-%E7%B6%B2%E6%B0%91-%E5%8F%88%E5%94%94%E9%96%8B%E5%AF%A6%E5%90%8D%E5%88%B6
)
[3] => stdClass Object
(
[title] => 私院產檢擺烏龍?醫生搞錯胎兒性別誤診患先天病港媽險做人流
[articleId] => 20062816
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20062816/%E5%AD%95%E5%A9%A6%E9%80%B2%E8%A1%8Ct-%E7%84%A1%E5%89%B5%E7%94%A2%E5%89%8D%E6%AA%A2%E6%B8%AC-%E6%8F%AD%E9%86%AB%E7%94%9F%E6%90%9E%E9%8C%AF%E5%AC%B0%E5%85%92%E6%80%A7%E5%88%A5%E9%9A%AA-%E8%90%BD%E4%BB%94
)
[4] => stdClass Object
(
[title] => 港人幾萬蚊裝修舊公屋 整完好似私樓咁靚?網友紛紛大讚:咁高質
[articleId] => 20050576
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20050576/%E6%B8%AF%E4%BA%BA%E5%B9%BE%E8%90%AC%E8%9A%8A%E8%A3%9D%E4%BF%AE%E8%88%8A%E5%85%AC%E5%B1%8B-%E6%95%B4%E5%AE%8C%E5%A5%BD%E4%BC%BC%E7%A7%81%E6%A8%93%E5%92%81%E9%9D%9A-%E7%B6%B2%E5%8F%8B%E7%B4%9B%E7%B4%9B%E5%A4%A7%E8%AE%9A-%E5%92%81%E9%AB%98%E8%B3%AA
)
)