Northern Lights: For decades, scientists have tried to understand how the Northern Lights are most likely formed. But now they have also managed to prepare it in the lab for the first time.
Aurora Borealis or Northern Lights show the beauty of nature. They are considered as the largest light show on Earth. This phenomenon, occurring at the high latitudes of the Earth, has puzzled scientists for centuries. Till now it was not known that what is the reason, which produces the Northern Lights. However, now the answer to this question has been found.
A group of physicists from the University of Iowa has finally proved that the Northern Lights are produced by powerful electromagnetic waves during geomagnetic storms. This information has been given in a new study.
It has been told in this study that this phenomenon is also known as Alfven waves. This event starts sending electrons towards the earth. Because of this, the particles start producing light, which we know as the Northern Lights.
Study co-author and Professor Greg Howes said, “We found that small populations of electrons travel faster through the electric field of Alfven waves. It is like a surfer trying to catch a wave with his surfboard. But his speed is increasing because he is moving with the wave.
This theory of electrons surfing on an electric field was first given by a Russian physicist Lev Landau in 1946. It was named Lando dumping. In this way now scientists have proved their theory.
Scientists have spent decades trying to understand how the Northern Lights most likely form. But now they have also managed to prepare it in the lab for the first time. He developed it in a lab of the Large Plasma Device (LPD) at UCLA’s Basic Plasma Science Facility.
Scientists used a 20-metre-long chamber on UCLA’s LPD to recreate Earth’s magnetic field through powerful magnetic field coils. Within this chamber, scientists prepared the plasma to be present in space near the Earth.
Professor Greg Howes said, “Using a specially designed antenna, we launched the Alfven waves under the machine. During this, Waves was traveling by a hose. As soon as he saw the waves surfing with electrons. They immediately used a special instrument to measure how those electron waves were gaining energy.
However, through this experiment, scientists could not prepare the light exactly like the Northern Light. Professor Greg Howes said, “Our measurements in the lab clearly agree with the predictions of computer simulations and mathematical calculations.” These prove that electrons surfacing on Alfven waves can accelerate the movement of electrons. Because of this, the Northern Lights are formed.
After this information came to the fore, scientists from all over the world including America are very excited. Patrick Cohen, a NASA scientist, said that I am very excited. It is very rare to see an experiment in a lab that is based on a theory or model related to the space environment.