這是有一次 跟物理迷因 @physical_daily_meme 聊到的有趣現象 當時覺得太有趣，就決定撰寫了 ٩۹(๑•̀ω•́ ๑)۶ 另外泡泡與汽油 應為薄膜造成的#干涉現象 光碟與孔雀則為#繞射現象。 這部分容易搞混， 所以在這裡附註說明。 而他們都屬於虹彩現象。 至於其他種類的虹彩現象 其原因我一時間查不到原理不敢亂寫。 如果讀者知道的話 歡迎告訴我，我會補充在這裡。 (≧ω≦)/  「註」： 有些文章會用反射等等字眼 我想是為了幫助容易了解。 實際上blazed grating 造成的繞射現象在光學教科書裡 有很深的探討但我們多數人用不到， 所以這裡簡單提及而已     reference: Lawrence T. E. et al., (2007) A Research note surface roughening of precooked,  cured beef round muscles reduces iridescence. Journal of Muscle Foods   Martinez-Hurtado, J. L., Akram, M. S., & Yetisen, A. K. (2013). Iridescence in meat caused by surface gratings. Foods, 2(4), 499-506. Shinya Yoshioka and Shuichi Kinoshita (2002), Effect of Macroscopic Structure in Iridescent Color of the Peacock Feathers, Forma 17,169-181. Jian Zi, J, Xindi Yu, X, Yizhou Li, Xinhua Hu, Chun Xu, Xingjun Wang, Xiaohan Liu*, and Rongtang Fu, Coloration strategies in peacock feathers (2003), PNAS. 100:12576-12578  #帕克201#帕克物理#知識#冷知識#美食

Went all the way to The Yacht Club at Serasa yesterday to get my favourite durian muffins from @dilcoffeetrail. Really kind of him to also give me a slice of his Pineapple and Coconut Cake! Moist buttery cake with pineapple chunks and coconut gratings, this really reminds me of Pina Colada! Very fitting for a dessert at the beach 🏝🍍🥥 #halal

Gratings Eps 9.16 . On a lazy day like today in a quiet neighborhood 🍰