Why can Sound not Travel through a Vacuum?
Sound does not travel at all in space. The vacuum of outer space has zero air. Because sound is a vibrating air, space does not have vibrating air, so there is no sound. If you sit on a spacecraft and another spacecraft explodes, you will not hear anything. Explosives, explosive asteroids, supernovas, and burning planets would be silent in space. In a space shuttle, you may hear other passengers because your ship is full of air. In addition, the living person will always be able to hear, talk, and circulate blood, because the air in his air space that supports his life also transmits sound. But two astronauts in space suits floating in space will not be able to talk to each other no matter how loud they shout, even if they are just inches apart. Their inability to speak directly is not caused by their helmets getting in the way but rather by the lack of sound space.
What Happened to Vacuum?
Everything on Earth that weighs and takes its place is essential. Yes, even air is a form of gas. Scientists can make a vacuum using a vacuum pump that absorbs air in a closed container. When this happens, there is little or no pressure in the closed container.
How do you blow up a balloon without using air from your mouth or a machine? Let’s pretend we blow the balloon a little, tie it, and put it in a sealed container. Then we used a vacuum pump to expel any air. As the pressure inside the container decreases, the pressure inside the balloon increases, making it more intense; there is no air pressure outside the balloon to keep the gas inside the balloon from expanding. Wouldn’t that be a good idea to show your friends?
Vacuums In Space
Where can you find the most significant and best vacuum? In space, it is! The solar system is extensive and composed of a large amount of space or vacuum. However, even though this is the best vacuum, it is still 100% empty. There are a few jumping atoms!
It’s a well-known fact that the 1979 sci-fi horror blockbuster Alien tagline: “In space, no one can hear you screaming.” Or, to put it another way, one can not process sound in a blank space – there are simply no molecules for sound vibration to pass through. Yes, that’s right: but to the point.
If the distance between the air particles is more significant than this length, the sound cannot close the gap and the ‘wave’ position. Therefore, sounds should be of a high frequency – which can appear as a low voice in our ears – to make them move from one particle to another and out of certain parts of the space. When the sound is below 20 Hz, it becomes an ultrasound, and we cannot hear it.
Gizmodo noted one example is the black hole, which produces the lowest note that scientists are aware of so far: about 57 octaves below the center of C and below our hearing distance (about a billion times deeper than sounds we can hear). So you can expect to be able to measure one oscillation every 10 million years with the sound of a black hole while our ears standstill at sounds around 20 times per second.
Back on our planet, the sounds of a powerful earthquake are sometimes strong enough to reach the atmosphere, and infrasound can continue where the typical sound should rise.
Shortly after the Big Bang (about 760,000 years), the atmosphere was dense enough for ordinary sounds to pass through. And if you hear the sound of a plane crash or a spacecraft in a Star Wars movie, remember that the filmmakers are relieved: you probably won’t hear much about it.
Can Sound Waves Travel over a Space?
No, sound waves cannot travel through space; this is because the sound waves of the equipment require equipment (such as air and water) to move.
Sound in physics is defined as vibrations that propagate like an audible pressure wave, using an object such as gas, liquid, or solids. Sound travels faster on solid objects, slower in liquids compared to very slow gases.
Until recently, we regarded space as devoid of particles. In space, however, there are gas and dust-filled areas capable of carrying sound waves. However, because these particles are scattered far and wide, the sound waves they produce are so low that humans cannot hear them.
Sound can Jump into Space, after all.
IN TIME, no one can hear you screaming. That agrees with the textbooks of physics and the tagline of the Alien movie. But it seems that in some cases, noise can jump between objects in the vacuum after all.
Sound waves travel through vibrations of particles in media such as air, water, or metal. So it is logical that they would not be able to travel in a vacuum, where there are no atoms or moving molecules.
As it turns out, space is not a full and empty space, despite the large swathes. The gas between the stars and the dust left by the old stars and sometimes used to create new ones has the power to carry sound waves – we can’t listen to them. The particles are very diffused, and the resulting sound waves are usually low, so they are beyond human ability to hear. As Kiana Smith-Strickland explains in Gizmodo, it sounds like movement as molecules collide, in the same way, that ripples disperse when you throw a stone into a lake. As the ripples gradually fade, the sound gradually diminishes, which is why we only hear the sounds produced near us. As the sound wave passes, it causes oscillations in the air pressure, and the time between these cycles represents the frequency of the sound (measured in Hertz); the distance between the moving peaks is the length of the wave.