文：Alex
美國中西部及五大湖地區自本周初，持續受極地漩渦（Polar Vortex）侵襲，多處地區打破當地低溫歷史紀錄。有「風城」之稱的芝加哥，在當地時間周四更錄得零下 29°C 的低溫，堪稱比北極（現時溫氣 -20°C 左）還要寒冷！事實上，當地人早已戲稱芝加哥為「芝伯利亞」（Chiberia）。
▲（photo by jordanchambersphotography @Instagram）
▲（photo by jordanchambersphotography @Instagram）
在嚴寒之下，不少居民找來一鍋熱水向空中潑。由於氣溫極低，水未落到地上已化成一團煙雲，幾乎完全蒸發掉！而攝影器材的高速攝錄（慢動作）功能，在此時此刻終於有用武之地。不過，若影友有機會玩這種小把戲，切記留意風向，皆因有人因逆風潑水而燙傷。較安全的玩法是把水順著風向潑出去，確保熱水不會被風吹回身上。
#PolarVotex2019 #boilingwaterchallenge #Madison madison,wi pic.twitter.com/vxrI1yBDpq
— Brotha Q (@ruthless_Q) January 31, 2019
Boiling water freezes before it hits the ground. -22/-49 windchill in Chicago. #Chicago #Jaden #chiberia pic.twitter.com/UPYVjloGBk
— clay carroll (@Clay_Carroll) January 30, 2019
Ross + boiling water + -22 degrees pic.twitter.com/tWLzGr47hD
— Kelly Teeselink (@kellyteese) January 30, 2019
Wow! The Mpemba Effect!
— Buitengebieden (@buitengebieden) January 31, 2019
Boiling water, -25’C and a nice sunrise...#mpemba #PolarVortex #Mpembaeffect pic.twitter.com/27kg4gwaS4
My brother @MichealNuggs doing the #boilingwaterchallenge ! #FoxNews #Chicago #LansingIL
— Kathleen (@musicninja_94) January 31, 2019
@FoxNews pic.twitter.com/rXj1hY0jZb
其實在潑熱水之外，嚴寒之下還有很多有趣的玩意，看看哪一個會成為下個社交媒體新潮流。
Boiling water droplets quickly freezing into ice crystals. -19 degree fun. Caution: boiling water will burn if not careful. pic.twitter.com/hJ3doP48nn
— Finley Math (@FinleyMath) January 30, 2019
#Chiberia ain’t got nothin’ on #Bloomington & @WBNQ #PolarVortex pic.twitter.com/IsDV6EEZ3K
— John Davies (@RadioDavies) January 30, 2019
Move over, @Simone_Biles. These frozen pants just stuck the landing ? #PolarVortex https://t.co/Yw64fE6mAB pic.twitter.com/vJtIEerTi8
— CBS News (@CBSNews) January 31, 2019
Frozen bubbles. How cool is that? #PolarVortexpic.twitter.com/4NsgHTHyRo
— Geert Jan Darwinkel (@Darch) January 31, 2019
