There's new evidence that the sound still carries weight

Date:

2019-03-06 22:00:12

Views:

59

Rating:

1Like 0Dislike

Share:

There's new evidence that the sound still carries weight

A Trio of scientists at Columbia University have discovered new evidence that sound waves carry a lot. In his article published in the journal Physical Review Letters, Angelo Esposito, Rafael Krichevsky and Alberto Nicolis described the use of effective methods of field theory to confirm the results obtained by the team last year when they tried to measure the mass carried by sound waves.

the

Sound takes mass. Why is it important?

For many years physicists were convinced that sound waves carry energy, but there was no evidence that they carry and weight. It seemed there was no reason to believe that they will generate a gravitational field. In the past year this has changed, as Nicolis and another physicist Riccardo Penco unearthed evidence that the traditional view may be wrong. They used quantum field theory to show that sound waves moving in superfluid helium, carry a small amount of weight with me. More specifically, they found that the phonons interacting with the gravitational field so that they were forced to carry the weight as you move through the environment. In the new work, scientists reported that similar results are valid for most materials.

Using effective field theory, they showed that the acoustic wave of one watt, which was moving in the water within seconds, tolerates a mass of approximately 0.1 milligram. They also note that this lot was part of the total mass of the system moving with the wave, as he moved from one place to another.

It is Important to note that the researchers did not actually measure the mass carried by a sound wave — they used math to prove that this is happening. In the case of real measurements, they suggested experiments that can be performed with sound waves in the condensate Bose-Einstein of very cold atoms, such a system must show quite the portable mass to be measured. They also noted that the best approach might be to measure the mass carried by sound waves that pass through the Land, being part of the earthquake. This sound can carry billions of kilograms of mass that will be seen on devices that measure a gravitational field.

What do you think, what application opens it is opening? Tell us about it .

Recommended

Why with age, time flies faster than in childhood?

Why with age, time flies faster than in childhood?

In the course of growing up-almost every person there is a feeling that over time greatly accelerated, it would seem that he only recently woke up and it was time to go to bed. For many years scientists tried to identify the cause of this phenomenon,...

Tuberculosis can be defeated until 2045

Tuberculosis can be defeated until 2045

can eradicate TB until 2045, if the fight against the deadly disease will be properly funded, said the group of international experts. According to them, the inaction will result in huge economic and social costs, and the world needs to improve scre...

Superconducting nanowires are planning to use to search for dark matter

Superconducting nanowires are planning to use to search for dark matter

One of the greatest scientific research of our time is the hunt for dark matter. Physicists believe that this substance fills the universe and think you can see evidence of this in how to spin the galaxy. The fact that galaxies rotate so fast that th...

Comments (0)

This article has no comment, be the first!

Add comment

Related News

What is really the size of the human footprint in Antarctica?

What is really the size of the human footprint in Antarctica?

over the past decades humanity is trying to explore Antarctica. After the adoption of the Antarctic Treaty 1961 human activity on this continent began to be governed by the law, since scientists began to worry that the presence of...

Astronomers have discovered another star with an extremely unusual decrease in luminosity

Astronomers have discovered another star with an extremely unusual decrease in luminosity

Piggy astronomical mysteries replenished. An international group of researchers reported on the results of observation of a very unusual star. Located about 440 years of low-mass star, dubbed EPIC 204376071, demonstrates a very in...

Found correlation between poor oral hygiene and the development of cancerous tumors

Found correlation between poor oral hygiene and the development of cancerous tumors

There are many types of cancer and, despite the active development , scientists are trying to develop drugs against only their specific species. A new discovery made by researchers from Columbia University that can help in the tre...