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[請問] 有關音爆時產生的"低壓"蒸氣雲
Aug 3rd 2013, 13:25, by charly780712

作者charly780712 (洽里)

站內ask

標題[請問] 有關音爆時產生的"低壓"蒸氣雲

時間Sat Aug 3 13:25:23 2013

請問為什麼要叫做"低壓"蒸氣雲? 因為我在書上看到該現象的成因為 "震波並不是每次都能用肉眼便可以看得見的, 只有周遭的空氣含有較多的水汽(也就是相對濕度較大)時, 震波後的空氣因壓力突增而被壓縮,體積變小了, 可是所含的水汽仍是一樣多,於是相對濕度也就隨之突增, 如果超過飽和狀態(也就是相對濕度等於100%), 多餘的水汽便被排擠出來而凝結成水珠,以霧的形式出現, 才會看到這場美景。" 照書上的說法的話 該現象不是應該稱為"高壓"蒸氣雲嗎? 謝謝~~ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 1.34.247.185

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