Science, Tech, Engineering and Math
Jim explores what are the most popular interpretations of quantum mechanics and how we might need to be a little more specific when we talk about ‘reality’.
Jim's book "Quantum Reality" is now available on Amazon: https://geni.us/OF5X
Watch the Q&A: https://youtu.be/Udy2Rs-t47o
Jim Baggott is an award-winning science writer. He trained as a scientist, completing a doctorate in chemical physics at the University of Oxford in the early 80s, before embarking on post-doctoral research studies at Oxford and at Stanford University in California.
He gave up a tenured lectureship at the University of Reading after five years in order to gain experience in the commercial world. He worked for Shell International Petroleum for 11 years before leaving to establish his own business consultancy and training practice. He won the Royal Society of Chemistry’s Marlow Medal for his contributions to scientific research in 1989.
This talk was streamed live by the Ri on 14 July 2020.
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According to our best theories of physics, the fundamental building blocks of matter are not particles, but continuous fluid-like substances known as 'quantum fields'. David Tong explains what we know about these fields, and how they fit into our understanding of the Universe.
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David Tong is a professor of theoretical physics at Cambridge University, specialising in quantum field theory.
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From Boltzmann to quantum theory, from Einstein to loop quantum gravity, our understanding of time has been undergoing radical transformations. Carlo Rovelli brings together physics, philosophy and art to unravel the mystery of time.
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Carlo's book "The Order of Time" is available now - https://geni.us/JjwvO
Watch the Q&A: https://youtu.be/NXcu0BlbTrM
Time is a mystery that does not cease to puzzle us. Philosophers, artists and poets have long explored its meaning while scientists have found that its structure is different from the simple intuition we have of it. Time flows at a different speed in different places, the past and the future differ far less than we might think, and the very notion of the present evaporates in the vast universe.
Carlo Rovelli is a theoretical physicist who has made significant contributions to the physics of space and time. He has worked in Italy and the US, and is currently directing the quantum gravity research group of the Centre de physique théorique in Marseille, France. His books 'Seven Brief Lessons on Physics' and 'Reality Is Not What It Seems' are international bestsellers translated into forty-one languages.
This talk and Q&A was filmed in the Ri on 30 April 2018.
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Inside Einsteins Mind: The Enigma of Space and Time
In celebration of the 100th anniversary of Einstein's general theory of relativity, leaders from multiple fields of physics discuss its essential insights, its lingering questions, the latest work it has sparked, and the allied fields of research that have resulted.
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Original Program Date: 05/30/2015
Host: Brian Greene
PARTICIPANTS: Gabriela González, Samir Mathur, Andrew Strominger, Cumrun Vafa, Steven Weinberg
Introduction with Brian Greene 00:00
Participant Introductions 04:25
What aspect of physics is so important that you would tattoo it on your body? 08:05
Steven Weinberg takes us from Newton to Einstein. 12:05
What was the observational support for Einstein theories? 19:20
Can Newtons ideas be extracted from Einstein's? 23:40
What did Einstein think about the Big Bang? 30:58
What did Hubble's observations discover? 33:39
What is the biggest unsolved problem in cosmology? 38:03
What is the history of Black Holes? 40:31
Einstein's thoughts on singularity. 47:33
What is a gravitational wave? 50:49
What does a gravitational wave sound like? 57:52
Combining General relativity and Quantum mechanics. 01:00:28
Cumrun Vafa on String theory. 01:10:50
Samir Mathur explains information loss at a black hole. 01:17:45
Black Holes to Wormholes. 01:28:45
Is the fabric of space time a physical thing? 01:32:24
What is the one question you would want answered in your lifetime? 01:36:37
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✔️ Topic Name: Difference Between Exponential And Logistic Growth
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Paul Andersen explains how populations eventually reach a carrying capacity in logistic growth. He begins with a brief discussion of population size ( N ), growth rate ( r ) and exponential growth. He then explains how density dependent limiting factors eventually decrease the growth rate until a population reaches a carrying capacity ( K ). A mathematical simulation of this process is included along with a brief discussion of r and K selected species.
Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: http://www.freesound.org/peopl....e/CosmicD/sounds/725
Creative Commons Atribution License
All images are either Public Domain or Creative Commons Attribution Licenses:
"File:Frog in Frogspawn.jpg." Wikipedia, the Free Encyclopedia. Accessed April 19, 2013. http://en.wikipedia.org/wiki/F....ile:Frog_in_frogspaw
"File:Stress-coloured Brookesia Desperata Female with Two Recently Laid Eggs.png." Wikipedia, the Free Encyclopedia. Accessed April 19, 2013. http://en.wikipedia.org/wiki/F....ile:Stress-coloured_
Nevit. English: White Rabbit, 2011. Own work. https://commons.wikimedia.org/....wiki/File:Rabbit_nev
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This video discusses how all exponential growth eventually tapers off, through one mechanism or another.
Website: https://www.eigensteve.com/
Exponential Growth
Paul Andersen explains how populations experience exponential. He begins by address the major players; N (population size) and r (growth rate). He models population growth in rabbits through four generations. He then shows you how to use a spreadsheet and then algebra to predict future populations.
Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: http://www.freesound.org/peopl....e/CosmicD/sounds/725
Creative Commons Atribution License
All images are either Public Domain or Creative Commons Attribution Licenses:
Nevit. English: White Rabbit, 2011. Own work. https://commons.wikimedia.org/....wiki/File:Rabbit_nev
