Eric Cornell: The How and Why of the World's Lowest Temperatures Lecture from “The How and Why of the World's Lowest Temperatures” at VTU in Bangalore, India
- Posted on
- 16.02.2010
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- Event Details
Supplimentary Materials
Chapter 10 of 21: Evaporative Cooling
How we can modify the phase transition and force evaporation to lower and lower temperatures in a "magnetic bowl". Using this method, atoms can be cooled down to as low as a billionth of a degree above absolute zero. (7 minutes, 21 seconds)
Chapter 1 of 21: Introducing the World of the Supercold
Eric Cornell delves into the world of the supercold by giving an overview of how and why physicists want to cool atoms down to temperatures of within a millionth of a degree of absolute zero. (5 minutes, 14 seconds)
Chapter 2 of 21: Seven Ways to Cool Things Down
Eric Cornell gives a history of getting things colder in seven stages. (See our HNI Twitter feed for a summary of the seven stages in tweet form: http://twitter.com/HoneywellNobel) (3 minutes, 27 seconds)
Chapter 3 of 21: Exploring the Effects of Phase Transitions
When ice turns to water, it can soak up a great deal of heat. Water-vapour transition can soak up even more heat. Eric Cornell examines the implications of these phase transitions. (3 minutes, 12 seconds)
Chapter 4 of 21: Modern Cooling
How gases cool down due to changes in pressure and an explanation of the basis of modern refrigeration. (2 minutes, 56 seconds)
Chapter 5 of 21: Strawberries and Cream
What happens when you put cream, sugar and strawberries in a can and surround the can with ice? What is the temperature required in order to make strawberry ice cream? (2 minutes, 15 seconds)
Chapter 6 of 21: Scientific Frontiers
Scaling the hottest and coldest temperatures we can observe on Earth. What drove scientists to explore the frontiers of low-temperature physics? (4 minutes, 4 seconds)
Chapter 7 of 21: Insulating Cold Atoms Even Further
Sitting in the shade enables us to cool down, and this is true of atoms even at much lower temperatures. (3 minutes, 59 seconds)
Chapter 8 of 21: The Third Generation of Cooling
Entering the world of Bose-Einstein Condensates - Eric Cornell celebrates the groundbreaking work done by Satyendra Nath Bose and Albert Einstein. (8 minutes, 17 seconds)
Chapter 9 of 21: Atoms Have a Good Eye for Colour
How physicists take advantage of the fact that atoms can distinguish between different frequencies of light with exquisite precision. (5 minutes, 52 seconds)
Chapter 10 of 21: Evaporative Cooling
How we can modify the phase transition and force evaporation to lower and lower temperatures in a "magnetic bowl". Using this method, atoms can be cooled down to as low as a billionth of a degree above absolute zero. (7 minutes, 21 seconds)
Chapter 11 of 21: What Are Bose-Einstein Condensates like?
Eric Cornell describes the texture and density of Bose-Einstein Condensates and arguably their most important property - superfluidity. (3 minutes, 46 seconds)
Chapter 12 of 21: Conclusions
Eric Cornell summarizes how cooling was driven by human needs and describes the ongoing evolution of 2nd and 3rd generation ultra-cooling techniques. (4 minutes, 14 seconds)
Chapter 13 of 21: Q&A - Part 1
What kind of thermometers were used to measure these ultracold temperatures? (2 minutes, 57 seconds)
Chapter 14 of 21: Q&A - Part 2
Once the atoms are trapped, how do you get them spinning? What happens inside the quantum vortex? (4 minutes, 3 seconds)
Chapter 15 of 21: Q&A - Part 3
Eric Cornell is asked to describe the nature of the magnetic "trap" in further detail. (3 minutes, 14 seconds)
Chapter 16 of 21: Q&A - Part 4
In a superconductor, electrons exist in a Cooper pair - can Bose-Einstein Condensates throw any light on superconducting? (2 minutes, 40 seconds)
Chapter 17 of 21: Q&A - Part 5
What kind of resources are available if students want to learn more about BEC and Eric Cornell's research? (55 seconds)
Chapter 18 of 21: Q&A - Part 6
Is it only under certain conditions that atoms have a good eye for colour? (1 minute, 50 seconds)
Chapter 19 of 21: Q&A - Part 7
Eric Cornell answers questions submitted online during the live webcast, as well as questions from the audience in the next-door auditorium at MS Ramaiah Institute of Technology. (4 minutes, 3 seconds)
Chapter 20 of 21: Q&A - Part 8
Does the Earth's magnetic field interfere with the experiments using the "magnetic bowl"? (1 minute, 27 seconds)
Chapter 21 of 21: Q&A - Part 9
Can the techniques of BEC be used for modeling black holes? What are the costs involved in bringing about BEC? (4 minutes, 4 seconds)
Description
Eric Cornell traces the rich history of ultra-cold physics by celebrating the work of Einstein and Satyendra Nath Bose.
