Do falling bombs really whistle?
470839
Personally, I've never heard a mortar... until it hit.\n\nArtillery does have an "incoming" sound, but the time between you hearing the whistle and the impact of the round is literally a split second (presumably because of the speed of an artillery shell).  I only know this from video of incoming rounds (shot from the perspective of the enemy), I've never been on the "wrong end" of artillery.\n\nIt is interesting that people have named mortars as making a sound, it was my understanding that, because of their   (comparatively) low speed they DIDN'T make a sound.  This is experience from 2 Iraq tours, countless indirect fire attacks (usually mortars), and living closely with a 80mm mortar platoon.\n\nRockets also make a sound, but that could be from the motor.  I've never been under an air strike, so I couldn't tell you about dropped munitions.
813749
The Israeli MOSSAD definately did as they DID warn Benjimin Netenyahu BEFORE the explosions.\n\nThe London Underground was conducting live secret exersizes simulating the exact events at the exact times and exact locations of the real events! the odds of this happening by chance have been calculated using the insurance actuary as used by the insurance industry for assesing insurable risk.  \n\nThe odds of these events happening as planned in the exersize, at the correct locations and times are the same as me picking 1 grain of sand at random, from anywhere on the entire planet (including under the oceans and seas) and you being able to pick the exact same grain of sand at random.\n\nthat equates to a 1 in 3 followed by 41 zeros. \n\nor one in 300,000,000,000,000,000,000,000,000,000,000,000,000,000.  I don't think that there is a commonly recognized name for a number as big as that.\n\nIN OTHER WORDS, REALISTICALLY IMPOSSIBLE!\n\nIn other words, the perpertraitors where patsies recruited to 'play the part of' terrorists. Unknowingly becoming the victims of a state sponsored terrorist event!\n\nWe only have the media and MI5's say so that any of the other evidence collected afterwards is genuine, and these are the pople who lied repeatedly about WMD in Iraq and about other terrorist plots that have come to nothing. \n\nThe only independent investigations into 7/7 by private individuals have discovered many discrepencies with the 'official version'. That is why there will never be an independent and full investigation or inquiry into 7/7.
381799
When it fell, it still made air vibrations (which could be considered sound depending on the definition you read).\n\nFor example:\n\nSound (Noun):\n"1c: mechanical radiant energy that is transmitted by longitudinal pressure waves in a material medium (as air) and is the objective cause of hearing"\n\nSo, based on this definition, yes it made 'sound'.
413598
blackpowder or gunpowder exploding makes the cracle sound. they just put it in smaller sections so it wont be as loud
72587
There are several different ways the bomb damages surroundings, depending on the distance from ground zero:\n\n1. Nearest the bomb explosion, severe heat vaporizes everything.\n2. Nuclear radiation moves out from the epicenter.\n3. Pressure shock-waves also move out from the epicenter, knocking down structures.\n4. Fallout comes down from the skies, coating everything.
805760
Fireworks and bombs are completely different. When a firework goes off you know about it only when it happens. When a bomb goes off you feel it a fraction of a second before the explosion. I have been in the vicinityof several bombs in N. Ireland and it almost feels like the air is being sucked towards the bombs in the second before it actually explodes. When it does explode then you know it is not a firework.
158159
No... The Illumanti has silencers put on them..\n\n\np.s.thanks for the two points
282828
This question has been asked forever and been the subject of debate. I think the question is worded incorrectly. If a tree falls, it makes a sound. That's a law of nature. The question is did it really fall if no-one was around to see or hear it.
597670
doesn't really exist.  Commonly referred to as MACH.  As you approach Mach the air has trouble getting out of the way fast enough.  This creates a pressure build up.  (why modern jets have swept wings) Once exceeded the jet creates a sonic boom.  \n\nThe sound is still created, but it can't keep up with the source. Try to find a jet by sound alone.  Then find it visually.  It's kinda hard.  Even if directly overhead.
275058
of course they make sounds. Havent you ever watched JAWS? They go " du dum du dum, du dum du dum" right before they kill someone.
530329
The old "If a tree fell in the forest, and there was nobody around to hear it, does it make a noise?" conundrum.  It depends on what you define as "a noise":\n\nIf you define "noise" as the creation and propagation of compression waves in the air at a variety of frequencies, then YES, the falling tree makes a noise.  A deaf person, who is incapable of hearing noises, would still feel the vibrations produced, as would any one of a variety of noise measuring devices.\n\nIf you define noise as the impingement of those compression waves on the human ear, with the resulting conversion into nerve impulses that stimulate certain specific portions of the human brain that we associate with "sound" or "noise", then NO, it does not make a sound, becuase there is no human ear present.\n\nSo, my final answer:  Yes, a tree falling in the forest makes a noise.  Doesn't matter if there's anyone or anything around to hear it.
592273
Probably a similar thing to that which happens when you reach the sound barrier.  I'm sure the light particles/energy build up and will create an explosion.
431321
"...it's caused by cavitation, which is a high-tech way of saying bubbles form and then they pop. When you heat water on the stove, the layer at the bottom is the first to boil, meaning it turns into a gas. The water vapor collects into bubbles, which rise toward the surface, passing through cooler water en route. The lower temperature causes the vapor to recondense into liquid and the bubbles collapse, making a noise. This gets gradually louder, as bubble production increases, until the water is so uniformly hot that the bubbles make it to the top without popping. At this point the noise diminishes. But it takes a moment before the vapor pressure builds up sufficiently in the top of the kettle to make it start whistling. That's why you get a brief period of calm before the steam--an incredibly feeble play on words, but a perfectly adequate description of the event."
618883
Yes it makes noise but No there is no way to prove that it does...can we move on now PLEASE?
737164
whistle instead of talking.
271060
Looks like an planned demolition if you ask me. \nNo building falls like that naturally, also, the center falls first so that the walls will fall inward.  \nNone of the videos show the first few seconds (you know, where you hear the blast of dynamite in the demolition).\n\nNo motive, I can think of, but very suspicious.
343019
yes. there's a little brass marker on the floor.  The tour guide walked several steps away and whispered something to the floor at his feet and I could hear it clearly while standing on the marker.