What is the speed of sound in Bose-Einstein condensate?

What is the speed of sound in Bose-Einstein condensate?

250 m/s, between 1 and 2 Kelvin. While the conventional theory of second sound has been successful for superfluid helium, the rise of Bose-Einstein condensates of ultracold atoms has posed new challenges.

Does sound travel in Bose-Einstein condensate?

Two teams of researchers reveal that sound can travel in a 2D Bose gas—a thin film of bosons—even when its density is so low that the atoms don’t collide. Collisionless sound propagation has been documented in systems including Bose-Einstein condensates near absolute zero and liquid helium.

What would happen if you touched Bose-Einstein condensate?

If you were to get into contact with a cloud of BEC, your body heat would heat up the cold matter in no time, effectivelly destroying the condensate.

Does sound travel faster in solids or plasma?

These media can be solid, liquid, gas, or even plasma. The speed of sound is dependent on the properties of the material it travels through. It will travel faster through a solid than a liquid, and faster through a liquid than a gas.

Can sound pass through plasma?

Yes, sound can travel through plasma state. Plasma is the fourth state of matter. As there is a medium, sound can travel through it.

What makes Bose-Einstein condensate different?

A Bose-Einstein condensate is a group of atoms cooled to within a hair of absolute zero. When they reach that temperature the atoms are hardly moving relative to each other; they have almost no free energy to do so. Instead, the atoms fall into the same quantum states, and can’t be distinguished from one another.

What travels fastest in a vacuum?

light waves
Explain that unlike sound, light waves travel fastest through a vacuum and air, and slower through other materials such as glass or water.

Does sound travel faster in a vacuum?

A: The speed of sound in a vacuum is zero meters per second, as sound cannot travel in a vacuum. The speed of sound in air mainly depends on the temperature of the air. On average, it is about 343 meters per second (1,125 feet per second), which is faster than the speed of sound in a vacuum.

What is the Bose-Einstein condensate?

Eric A. Cornell of the National Institute of Standards and Technology and Carl E. Wieman of the University of Colorado at Boulder led a team of physicists at JILA, a joint institute of NIST and CU-Boulder, in a research effort that culminated in 1995 with the creation of the world’s first Bose-Einstein condensate—a new form of matter.

What is the difference between the Bose-Einstein and Jin-DeMarco experiments?

While the Bose-Einstein experiments used one class of quantum particles known as bosons, Jin and DeMarco cooled atoms that are fermions, the other class of quantum particles found in nature. This was important to physicists because the basic building blocks of matter—electrons, protons and neutrons — are all fermions.

How cold can a condensate get?

The apparatus that made it is now at the Smithsonian Institution. The atoms within the condensate obey the laws of quantum physics and are as close to absolute zero—minus 273.15 Celsius or minus 459.67 degrees Fahrenheit—as the laws of physics will allow. The physicists likened it to an ice crystal forming in cold water.

When was the first condensation condensate made?

The condensation was first achieved at 10:54 a.m. on June 5, 1995, in a laboratory at JILA. The apparatus that made it is now at the Smithsonian Institution. The atoms within the condensate obey the laws of quantum physics and are as close to absolute zero—minus 273.15 Celsius or minus 459.67 degrees Fahrenheit—as the laws of physics will allow.