Plasma and BEC

YaazhiniAM 455 views 7 slides Oct 03, 2021
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About This Presentation

This is an introduction slideshow about Plasma and BEC. Hope it helps, and sorry for any errors. Thank you


Slide Content

Plasma And BEC

What is Plasma ? A Plasma is an ionized gas. A Plasma is a very good conductor of electricity and is affected by magnetic fields. Plasma, like gases have indefinite shape and indefinite volume. And are less dense than Solids and Liquids.  The sun and other stars consist of  plasma .  Plasma  is also  found  naturally in lightning and the northern and southern lights. Human-made  plasma  is  found  in fluorescent lights,  plasma  TV screens, and  plasma  spheres.

How Plasma is Formed A plasma is created when one or more electrons are torn free from an atom. A plasma is generally a mix of these positively charged ions and negatively charged electrons. Most plasmas are created when extra energy is added to a gas, knocking electrons free from atoms. High temperatures often cause plasmas to form.

Discovery of Plasma Plasma  was  first  identified in laboratory by Sir William Crookes. Crookes presented a lecture on what he called "radiant matter" to the British Association for the Advancement of Science, in Sheffield, on Friday, 22 August 1879. He used “ Crookes tube”, an experimental electrical discharge tube in which air  is  ionized by the application of a high voltage through a voltage coil.

What is BEC ? The fifth  state of matter , known as a  Bose-Einstein condensate  ( BEC ), has been created in the microgravity of the International Space Station for the first time. Bose-Einstein Condensate (BEC), a state of matter which is formed by cooling gas to an extremely low density, about one hundred thousandth the density of normal air, to super low temperatures.   This exotic and  rare  form of  matter  is only produced when a gas of boson-like particles is cooled to temperatures just above absolute zero (about -459.67F). One  application  for  BEC  is for the building of so-called atom lasers, which could have  applications  ranging from atomic-scale lithography to measurement and detection of gravitational fields.

Discovery of BEC Bose-Einstein condensates were first predicted theoretically by Satyendra Nath Bose (1894-1974), an Indian physicist who also discovered the subatomic particle named for him, the boson. Bose was working on statistical problems in quantum mechanics, and sent his ideas to Albert Einstein.  It looks  like a  dense little lump in the bottom of the magnetic trap/bowl; kind of like a drop of water condensing out of damp air onto  a  cold bowl.

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