leaf blowers, drones, aeroplanes, car engines, sirens, the wind, which whips in the tree. Especially if you live in the city you know that the noise can be everywhere.
Now has two research engineers from Boston University in the UNITED states invented a material that might make the world a calmer place. It writes the university in a press release, according to the Science.dk, where you can also see a video of the researchers, who test the material.
Through complex mathematics and a 3D-printer, scientists have created a material, which in many ways seems illogical: Light and air can move through it, but the sound can not.
‘Acoustic metamateriale’ scientists call their new acoustic invention.
– the Idea is that we mathematically can design a thing that can isolate the sound from everything, tells one of the scientists behind the new material, engineer and professor at Boston University, Xin Zhang, in a press release.
And it is apparently successful with.
thus They have designed and 3D-printed a donutformet stopper, which has a structure, which turns the sound waves back, but lets air and light pass.
They tested their invention with a speaker and a long pipe, as their prop could fit in.
Their material to be able to block 94 per cent of the sound that was played back from the speaker, played an especially high-pitched tone.
According to the researchers working their material also as sound absorber in many other forms, so you can design and build with the material according to the needs.
– Our structure is super easy, open and beautiful, says Xin Zhang in the press release.
