Download presentation
Presentation is loading. Please wait.
Published byGriffin Daniels Modified over 8 years ago
1
The Bose-Einstein Condensate BY: IVEN, ARYAMAN, PARSON AND BALJOT
2
What is it? A state of matter that consists of a collection of atoms near absolute zero; all the atoms have the lowest possible quantum energy level This state is often referred to as the fifth state; the previous four being solid, liquid, gas and plasma as the first, second, third and fourth states respectively
3
What are the Required Conditions? The temperature has to be within a few billionths of a degree of absolute zero. Absolute zero is 0K which is -273.15°C This doesn’t work with all elements, only Rubidium and Sodium have been made into Bose-Einstein condensate. -100 -273.15 Haha, I would cry but my tears have condensated! Sub Zero Sodium Bose-Einstein Condensate
4
What Happens at this Temperature? Due to the extreme cold conditions atoms almost lose all of their energy and reach their lowest possible quantum level Since all the atoms have the same amount of energy they all come together on top of each other and form a super atom Trust me, its cold…
5
Theory of the BEC (Bose-Einstein Condensate) BEC theory traces back to 1924, when Bose considered how groups of photons behave Photons belong to one of the two great classes of elementary or submicroscopic particles defined by whether their quantum principal is a nonnegative integer (0, 1, 2, …) or their quantum spin is an odd half integer (1/2, -1/2, …) The former type, called bosons, includes photons, whose spin is 1. The latter type, called fermions, includes electrons, whose spin is 1/2 As Bose noted, the two classes behave differently. According to the Pauli Exclusion Principle, fermions tend to avoid each other, for which reason each electron in a group occupies a separate quantum state (indicated by different quantum numbers, such as the electron’s energy) In contrast, an unlimited number of bosons can have the same energy state and share a single quantum state.
6
Applications of BEC BEC research has yielded new atomic and optical physics, such as the atom laser Ketterle demonstrated in 1996 A conventional laser emits a beam of coherent photons; they are all exactly in phase and can be focused to an extremely small, bright spot Similarly, an atom laser produces a coherent beam of atoms that can be focused at high intensity Potential applications include more-accurate atomic clocks and enhanced techniques to make electronic chips, or integrated circuits.
7
Fun Fact!
8
You Choose! https://www.youtube.com/watch?v=nAGPAb4obs8 (video on what a BEC is) https://www.youtube.com/watch?v=nAGPAb4obs8 https://www.youtube.com/watch?v=EK6HxdUQm5s (video on the application and on what happens to light in a BEC) https://www.youtube.com/watch?v=EK6HxdUQm5s
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.