The cool stuff
Source:
In physics it is known that, in addition to «habitual» we scale degree Aim, is and the Kelvin scale, where zero is equal to -273,15 degrees Celsius. The achievement of this value — an extremely difficult task. Previously, scientists have managed to cool to a temperature of absolute zero individual atoms, but to do so is molecule came first.
According to the journal Nature Physics, to achieve a kind of record failed physicists from the Centre for cold matter. They cooled the matter to millionths of a degree above absolute zero. Scientists have been able in his research to approach the minimum possible value of the temperature. It will be recalled that earlier during a series of experiments, scientists managed to reach only a share of one trillion Kelvin, by cooling individual atoms. To solve this problem, the experts had to combine two traditional approach.
The Scientists used molecules of calcium fluoride, is placed inside a magneto-optical trap. Inside the trap the substance was cooled with the help of special lasers. During this process, the atoms absorb photons and «re-emit», expending more energy than is purchased. In this simple way you can reduce the temperature only up to a certain value (called the Doppler limit).
In order to overcome this limitation, physicists have used another method, which consists in using two moving towards each other of the laser beam. They «pick» the excess kinetic energy of the molecules, cooling it to the desired value. Thanks to this manipulation, the temperature of the cooling molecules reached 50-millionth of a degree from absolute zero. According to scientists, the cooling to such very low temperature slows down the molecules and allows the designers to study their properties and structure.
Recommended
What will be the shelter for the first Martian colonists?
Mars is not the friendliest planet for humans While the Red Planet is roaming rovers, researchers are pondering the construction of shelters and materials needed by future Martian colonists. The authors of the new paper suggest that we could use one ...
New proof of string theory discovered
Just a few years ago, it seemed that string theory was the new theory of everything. But today the string universe raises more questions than answers String theory is designed to combine all our knowledge of the Universe and explain it. When she appe...
What is the four-dimensional space?
Modeling camera motion in four-dimensional space. View the world in different dimensions changes the way we perceive everything around, including time and space. Think about the difference between two dimensions and three dimensions is easy, but what...
Related News
FreemoVR: virtual reality for animals
Virtual reality is gaining popularity. But who would have thought that the experts from Austria will create a virtual reality system for the animals! Despite some comic idea, the experiment has quite serious scientific study. It i...
Scientists have created a "bacteria-cyborgs"
a Group of scientists from the United States created a new kind of bacteria. These bacteria can synthesize organic compounds using light due to the fact that they are part of the semiconductor crystals. It is thanks to the presenc...
May have been detected by a gravitational wave of a new type
According to rumors reported by New Scientist, scientists noticed subtle distortion of fabric of space, caused by a catastrophic collision of two neutron stars. This means that we may have caught a gravity wave of a new type. Now,...
Scientists have opened the "lab" of size 100 micrometers
Miniaturization of the various components has long been no surprise. Suffice it to recall the first personal computers that occupied several rooms. But to create a laboratory for full chemical analysis size of only 100 microns (0....
In our galaxy may be 100 million black holes
In January 2016 Observatory LIGO scientists made history when he announced the first detection of gravitational waves. Supported by the National science Foundation and scientists from Caltech and MIT, LIGO has been specifically de...
Found a way to obtain graphene from wood
Many people call graphene a material of the future, because it has many unique properties, however, graphene is a drawback: to produce it in large quantities is still very expensive. And recently, researchers from rice University ...
In the Beijing metro has begun testing trains on a magnetic pillow
the Development of new and faster and more fuel-efficient vehicles is in full swing. But if big giants like Tesla is still not aimed at the mass market, developments of scientists from China may well be to the taste of ordinary pe...
Created touch t-shirt that allows you to learn to fly a plane
a team of researchers from the University of Tokyo recently unveiled a special touch t-shirt, able to record movement and even, according to the creators, improve your sports skills and learn to operate a motorcycle, car and even ...
Can the fabric of space-time to be with flaws?
the biggest lesson of the General theory of relativity is that space itself is not flat, unchanging and absolute being. It is woven together over time into a single fabric: space-time. This fabric is continuous, smooth and curved ...
How to turn carbon dioxide into fuel?
every year, the gases emitted by the different plants, factories, and just more and more cars polluting the atmosphere of our planet. To combat the harmful emissions of the enterprises use a variety of filters, they are developing...
The project "Food from electricity." How is that even possible?
In recent years, experts agree that a permanent increase in the number of inhabitants of our planet, making traditional agriculture less efficient in order to feed humanity. Therefore, attempts to create "alternative sources" of f...
China has created artificial electronic "skin" that changes the color
As the press service of Tsinghua University, which is located in Beijing, scientists and researchers from this institution managed to develop a new material based on graphene with unique physical properties: electronic artificial ...
10 facts about black holes that everyone should know
Black holes are perhaps the most mysterious objects in the Universe. Unless, of course, somewhere in the depths of the not hiding things, the existence of which we do not know and can not know that is unlikely. Black holes are the...
Scientists from St. Petersburg have created the unsinkable metal
As the press service of the St. Petersburg Polytechnic University Peter the Great scientists of this institution have managed to develop and patent technology for the production of porous metal-based aluminum alloy. Due to the unu...
10 things that will disappear forever if the bees disappear
Save the bees! Worldwide campaigns in support of these small furry and invisible workers. Threats, warning the disappearance of the bees, are becoming more and more frequent. You are not even aware how big the impact bees have on ...
Created polyethylene, is able to quickly decompose and not pollute the nature
Almost every day we use plastic bags. Did you know that without due process of recycling the usual thin plastic bags that we give out dozens of stores, decomposed from 100 to 200 years, depending on the composition of the material...
From Antarctica broke off a piece with a mass of 1 trillion tons
In the photo above don't say it, but there is no mistake. From Antarctica just broke off one of the largest ever recorded iceberg, half the size of the area of the island of Jamaica. The cause was a crack appeared in the ice shelf...
Russian scientists have developed a technology for the production of transparent aluminum
according to the publication IOP Conference Series: Materials Science and Engineering, a group of Russian specialists from National research nuclear University MEPhI, together with colleagues from Moscow state University of geodes...
10 impossible things made possible by modern physics
In the wonderful world of physics impossible, at least not right away, but still is possible. But lately scientists have managed to achieve really superawesome things. Science progresses. Only one spaghetti monster knows what else...
The water was divided into two different liquids
We used to think that liquid water is a disordered collection of molecules that move rapidly within some structure. But scientists from Stockholm University have discovered two phases of this liquid with large differences in struc...
Comments (0)
This article has no comment, be the first!