Tech UPTechnologyLatex walls against noisy neighbors

Latex walls against noisy neighbors

silencioTired ofnoisy neighborswho turn on the television late at night? Scientists from the University of Hong Kong have found the ultimate solution. Placing somepanels made from latex and plastichave shown that it is possiblesilence annoying noisesthat penetrate the walls of houses and apartments.

According to a study published inApplied Physics Lettersand which the magazine echoesNew ScientistIn order to completely block the sounds that pass through the walls of our homes, in theory, walls several meters thick would be needed. Zhiyu Yang has developed an alternative consisting of panels made up ofa latex membrane stretched over a rigid plastic panel3 millimeters thick, arranged in one-centimeter square meshes. In the center of each box is a small, heavy plastic button. When sound waves hit the frame, the membrane and buttons resonate at different frequencies. The inner part of each membrane vibrates in opposition to the outer zone, which makessome sound waves cancel out others, silencing any sound.

In this innovative structure, each membrane can be configured to block a certain frequency of sound. And combining five (a total thickness equivalent to the ceramic tiles on the wall of our bathrooms) you couldblock noise in the 70 to 550 hertz frequency range, as Yang has shown. Enough considering that male voices have a frequency between 70 and 200 hertz, while female voices oscillate between 150 and 400 hertz.


A ray of light contains more information than you think

A simple ray of light, a jet of photons, is capable of giving us information about the temperature, composition, speed and distance of the star that emitted it.

The legacy of Albert Einstein: the Theory of Relativity

On this day Albert Einstein was born in Germany, author of the theory of relativity, who determined that the laws of physics are the same for all non-accelerating observers.

An asteroid that was going to hit Earth in 2023 turns out to be...

For a few days in January, asteroid 2022 AE1 became the most dangerous asteroid observed in more than a decade.

This is theory that says what was there before the Big Bang

One of the problems with physics is that its two great theories, general relativity and quantum theory, get along like a cat and a dog. Although we have been searching for a quantum theory of gravity for more than half a century, the truth is that the results are quite disappointing.

Is there only one time?

Time is a concept that we use daily throughout our lives. However, what is it? Time, we say, is what the clock ticks. But that is not saying much. If we reflect a little more we will see that no matter how hard we try to find an answer, none will completely satisfy us. Time is an elusive concept and it is surprising that something so familiar is so difficult to define.