Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizens for the delivery of clues on the way! CTOnews.com, August 25 (Xinhua)-- the Finnish research team at Westley University recently released a paper claiming that "sound travels in a vacuum" for the first time in the experiment. The researchers convert the vibration waves of sound into ripples in the electric field between objects, so that sound travels in a vacuum between two zinc oxide crystals.

In the traditional physics of the journal Nature, the source of ▲ pictures, it is believed that the transmission of sound needs a medium, and there is no transmission medium in a vacuum, so theoretically, sound cannot be transmitted in it, so researchers convert audio vibration into electric field fluctuations, thus successfully transmitting sound in a vacuum.

▲ source Nature magazine CTOnews.com found that the zinc oxide crystal used by the researchers is a piezoelectric material, which means that when force or heat is applied, it produces an electric charge. So when sound is applied to one of the crystals, the crystal generates an electric charge, destroying the nearby electric field.

If the crystal shares an electric field with another crystal, the interference can propagate from one crystal to another in a vacuum. These disturbances reflect the frequency of sound waves, so the receiving crystal can change the interference back to the sound on the other side of the vacuum.

However, these disturbances cannot propagate "more than the distance of a single acoustic wavelength", so in theory, as long as the distance between crystals is small enough, sound can be transmitted in it, no matter how small the wavelength of sound is. However, the possibility of this experiment still needs a proper environment, and in the verification of researchers, this kind of "vacuum sound transmission" can not be realized every time.

The discovery has opened up a new research field and is expected to be used to develop micro-electromechanical components in mobile phones or other devices, which will have an impact on future communication technology, according to researchers in the journal Nature, the source of ▲ images.

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