Sounds, once created, cannot be "prevented" from traveling. A "sound" becomes a sound only because it has already traveled, even if only for an instant. Because sounds are compression waves, they need a medium through which to travel. A sound will continue to travel until it as dispersed or been absorbed to the point that it can no longer be detected.
In a vacuum, there's an absolute lack of material. In this condition, a sound cannot even be created, let alone travel. So if you wanted to prevent a sound from occurring, attempt to make a sound in a vacuum. There will be no sound at all through the vacuum. However, even in this situation, the material you used in attempts to create a sound will transmit a sound wave.
If a sound as been generated and started travelling, it can be attenuated by absorption which limits or prevent the sound from being present although still very close to the "travelling sound". There are a variety of acoustic insulating materials that can be used for this absorption. Thick foam is used on conventional headphones to limit sound travel.
The one thing that is more effective than absorption that can be used is an active sound generator that can detect and transmit the inverse sound waves. This results in the sound waves being cancelled. This method is used by the sound-cancelling headphones.
Has to be completely closed area no air could be flowing in or out so cover up all the air holes as good as you can and your good
put it in a really really small space.
earplugs
False
Wernher von Braun envisioned humans traveling to Mars.
what traveling device was thought to be created due to the year without summer
Things traveling to a nucleus are afferents. Thalamus has afferents and efferents (things leaving it).
Which sentence sounds the strongest?
Why is it something
If you had intercourse with condoms, yes.
A heparin drip is used to prevent the blood from clotting. If there is an existing clot heparin will thin the blood, and prevent the clot from traveling to the lungs or brain.
accumlator
take all the particles out of the air, effectively making it a vacuum
You can do this by acting all nice and don't make laughing sounds and gigling sounds!
Where is this dead reletive traveling to that he/she needs credit? Sounds illegal to me, what do you think?
sounds like tire/road noise
Traffic tickets do not prevent you from traveling. You can go to other states.
the wire is barbed to prevent it from dislodging... I know ... sorry... sounds terrible.
It sounds like it might be the fan motor .
true