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The poem The Sound by Kim Addonzio is about sounds that cannot be heard. Suffering creates a sound, but it is not heard.
The explosion would never be heard on Earth. Sound cannot travel through the near-vacuum of space.
Most of the survivors did not hear the sound but did see the flash. The ones that heard it were far from ground zero.
Yes. Active sonar generates a pulse, the echo is heard some time later. The time it takes for sound to travel from the generator to the reflector and back to the sensor discloses the distance from the sonar equipment to the object reflecting the sound waves. Passive sonar just listens and does not generate any sound pulses itself but through various analysis algorithms certain information about the distance to an object that does make sound can be obtained. Passive sonar is not used for finding the depth of water but for listening to ships.
Yes, easily. That is why most bullets make that characteristic "crack" as they're fired. That's the sound barrier being broken. Ever heard a whip being cracked before? It sounds exactly like a gunshot for the reason that it's the same thing happening. That is why so called "silencers" sound nothing like they do in the movies. They are not that "silent" at all because you cannot get rid of the sonic boom. However, some ammo is subsonic, meaning it is designed to go slower than the speed of sound. Subsonic ammo/rounds do not make the distinctive "whipcrack" sound as far as I know.
has to do with smoking
Rhonchi are rumbling sounds generated by thick secretions in the lungs.
Yes. Elephants have a very loud sound. When people walk in forests and other areas surrounded by elephants, the sound made by the elephants indicates whether they are near or far away from them. - Elephants also make an ultra low growling sound. Research has shown that elephants will make this noise travel through their huge feet into the ground. The sound can be heard and identified some 3 kilometers away by other herds
Yes, they do. They make a rumbling sound as they vibrate.
Karana hears a rumbling sound which is likely caused by an earthquake. This natural event creates fear and uncertainty for Karana and the other characters on the island.
They do that when they hear a curious sound.
InfrasoundA human ear can perceive sound frequencies ranging from 20 to 20000 hertz.Researchers believe to have detected by using special equipments that elephants do communicate between themselves by using these low frequency infrasonic sound waves quite inaudible to us.Note that elephants lives in herds and they do require such efficient method of communication skill devloped over the years by the force of evolution.
rumbling
Sound is a vibration that passes through matter. Sound is capable of traveling through virtually any type of matter, although some types allow sound to travel further or faster. Rock, however, allows sound to travel much more quickly than air does. In fact, elephants communicate with each other from miles away by sending very low pitch rumbling sounds through their feet and into the ground, and then, using their feet, they can detect sounds coming from other elephants.
Elephants make a number of sounds. They make specific sounds related to sex and danger which we can hear and understand. However, they have a much larger number of sounds which are too low in frequency (infra sound) for our ears to hear which is propagated via the elephant's legs and feet through the ground over great distances. The most common sound (that we can hear) that elephants make is called trumpeting. We can also hear them make a low rumbling noise. Examples of this can be heard by clicking on the related link.
A rumbling sound when a Civic Hybrid is accelerating could be due to an exhaust leak. When there is an exhaust leak too close to the manifold it can create a deeper rumbling noise.
Elephants use infrasonic waves because that way they can be heard miles away for multiple reasons. Some reasons such as a female telling guys that she is ready to mate, or to ask other elephants hows it going. I think we as humans will never really know what elephants say. But I hoped I helped.