トンネル微気圧波
1. Tunnel boomTunnel boom is a phenomenon similar to a sonic boom that occurs at the exit of a high-speed train tunnel. The effect occurs because a train moving at high speed compresses and displaces a great deal of air; normally this air is pushed away harmlessly in all directions. However, when the train enters the tunnel, a high pressure zone is created when the displaced air has nowhere to go. This pressure travels along the tunnel at the speed of sound.
Read “Tunnel boom” on English Wikipedia
Read “トンネル微気圧波” on Japanese Wikipedia
Read “Tunnel boom” on DBpedia
Read “Tunnel boom” on English Wikipedia
Read “トンネル微気圧波” on Japanese Wikipedia
Read “Tunnel boom” on DBpedia
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