I live near some flight paths so a lingering sound is normal but recently somewhere else a military style jet flew over head and the sound lasted much longer at a very high volume, long after we could see it anymore – why?
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Military jets move very fast compared to other planes and they’re much louder. When a moving object generates sound waves the waves are compressed near the front of the object and spread out as they travel around and behind the object. These compressed sound waves have more energy than other waves and in turn create a louder noise. If the plane does hit the speed of sound you’ll see it and won’t hear a single thing anything until it’s way past you. On top of all that military planes don’t have sound dampening measures like commercial ones do because nobody is reading a magazine and taking a nap on a military plane.
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