見到人間有人講起林鄭個細仔，以一個錯嘅方式展示英國國旗，但究竟個"兩面"英國國旗有冇唔同呢? 答案係有嘅, 但有咩唔同呢? 就係你左手同右手嘅分別
你兩隻手掌theoretically 係可以完美無縫黐埋一齊, 因為佢哋係對方嘅mirror image, 呢一個Geometric property 我哋稱之為 chirality , 平時我哋喺食物標籤見到嘅左旋糖 右旋糖 就係呢個關係, in chemistry, we called these two compound as Enantiomers
In particle physic, chirality 可以用嚟 define helicity, 亦有 chiral symmetry and chiral theories 嘅學問
In biology, 我哋留意到一個 Homochirality嘅現象 簡單啲嚟講就係自然界上大部分嘅糖都係D-chiral (right-handed) , 大部分嘅amino acids都係 L-chiral (left-handed) , 究竟呢個現像有咩用途 , 發生喺 before or after life 科學家暫時都未解答到😆😆

蘋果🍎,對香港人而言係一個有良心有腰骨嘅傳媒/報刊 ，但對世界上大部分人嚟講講起🍎都只會諗起 iPhone or iPad, 但當呢兩間公司都未成立嗰陣，🍎喺當代人嘅心目中有象徵著啲咩呢？
In christianity, 🍎 traditionally 被默認為系亞當夏娃喺伊甸園食嘅禁果(forbidden fruit ) ,that's why🍎經常 depicted and symbolized as the origin of sins , 但其實呢一個係一個好普遍嘅misunderstanding 因為聖經並沒有 identified 到所謂嘅禁果係邊一種水果
另一個對🍎嘅誤解: 牛頓係因為比🍎 扑中個頭 所以發現gravity , 但實際上冇文獻指出屬實，個故事應該係佢見到🍎由棵樹跌落嚟有所啟發🤓
Painting :
Adam and Eve ,Albrecht Dürer, 1507; oil on panel
The Fall of Man, Titian ,1550s
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#WeNeedAppleDaily
#撐蘋果日報
@operation_surfing2020hk

講起女權主義 點可以唔提其中一個pioneer,Artemisia Gentileschi , the most important female artist👩‍🎨 in the 17th century, if not the whole art history
12歲失去母親 17歲嘅時候畀另一位畫家強姦🙀 從心理陰影走出嚟之後 憑著自己鶴立雞群嘅畫功 喺當時男性主導嘅藝術界佔一席位 用自己巧妙嘅雙手賺錢養家， 佢總共有五個仔女， 有兩個未到一歲就死咗 🙈，一個五歲死💀， 一個12歲死☠， 得一個養到成人, 佢老公亦都畀佢死得早, 但佢每次都能夠從傷痛之中企番起身🥺
從佢嘅堅定眼神👀你可以睇得出咩叫做「巾幗不讓鬚眉」Allow me to quote her sentences as the conclusion :
" As long as i live i will have control over my being" ✊
"My mustrious lordship, i'll show you what a woman can do"💪

Painting :
Artemisia Gentileschi, Self Portrait as Saint Catherine of Alexandria
Artemisia Gentileschi,Self-Portrait as the Allegory of Painting

#Art #Feminism

睇到呢一個classification 大家可能覺得好荒謬, 但唔好忘記顏色呢一個concept 並唔係absolute 嘅, but relative , 唔知大家記唔記得好耐之前有張咁嘅相 , 究竟條裙係咩色竟然可以有 discrepancy😮

其實visible light spectrum 只係適用於人類視覺， 其他動物體顏色係不同於我哋， 特別係昆蟲有啲好似用咗負片效果咁， 亦有啲動物可以睇到 ultraviolet or infrared 👀
#Ophthalmology