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A film by Callum Macrae & Elizabeth Jones
It's one of Africa's most bitter, if often forgotten, conflicts.
In 2011, South Sudan gained independence from Sudan following a 2005 peace deal that ended Africa's longest-running civil war.
After a referendum, in which an overwhelming majority of South Sudanese voted to secede, Africa's newest country came into being, the first since Eritrea split from Ethiopia in 1993.
But two Sudanese provinces, South Kordofan and Blue Nile, the people of which predominantly wanted to become citizens of the new nation, were excluded from the deal.
The SPLM-N, the northern affiliate of Sudan's People's Liberation Movement (SPLM) in South Sudan, consequently took up arms against the Sudanese government of President Omar al-Bashir, and fighting has continued on and off ever since.
Five years ago, as the war got under way, People and Power sent reporter Callum Macrae to investigate allegations of war crimes committed by the Bashir regime in the region. Last month he went back.
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Can the spooky world of quantum physics explain bird navigation, photosynthesis and even our delicate sense of smell? Clues are mounting that the rules governing the subatomic realm may play an unexpectedly pivotal role in the visible world. Join leading thinkers in the emerging field of quantum biology as they explore the hidden hand of quantum physics in everyday life and discuss how these insights may one day revolutionize thinking on everything from the energy crisis to quantum computers.
The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future.
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Original Program Date: June 1, 2012
MODERATOR: John Hockenberry
PARTICIPANTS: Paul Davies, Seth Lloyd, Thorsten Ritz
John Hockenberry's introduction 00:00
Participant Introductions 06:28
How is there a convergence between biology and the quantum? 7:45
Are particles in two places at once or is this based just on observations? 12:43
Are biological states creating a unique quantum rules? 17:32
Quantum mechanics is so counterintuitive. 23:00
Can nature have a quantum sense? 27:29
The quantum migration of birds... With bird brains? 31:50
Electron spin and magnetic fields. 37:00
Cryptochrome releases particles with spin and the bird knows where to go. 40:28
How is bird migration an example for evolution? 49:13
photosynthesis and quantum phenomena. 55:00
Bacteria doing quantum search. 1:00:21
Is quantum tunneling the key to quantum biology? 1:06:56
What are the experiments that prove this? 1:12:28
When fields converge how do you determine causality? 1:19:49
We have no idea how life began. 1:24:59
Replication leads to variation which is the beginning of life? 1:31:05
Physicist Brian Greene takes you on a visual, conceptual, and mathematical exploration of Einstein’s spectacular insights into space, time, and energy. In just 11.5 hours, using nothing more advanced than high school algebra, journey from Einstein’s earliest musings on the speed of light to his startling realization that time can tick at different rates to his revolutionary discovery of the world’s most famous formula, E = mc2.
This is a more in-depth and mathematical version of the WSU Master Class “Space, Time, and Einstein.” https://youtu.be/CKJuC5CUMgU
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Watch the class in full or view in segments via the chapter links below.
Experience the associated free online course at World Science U: https://worldscienceu.com/cour....ses/special-relativi
0:00 - Introduction
01:43 - Scale
05:46 - Speed
18:19 - The Speed of Light
27:39 - Units
33:28 - The Mathematics of Speed
44:24 - Relativity of Simultaneity
54:25 - Pitfalls: Relativity of Simultaneity
1:03:32 - Calculating the Time Difference
1:18:42 - Time in Motion
1:28:48 - How Fast Does Time Slow?
1:46:32 - The Mathematics of Slow Time
1:57:11 - Time Dilation Examples
2:10:51 - Time Dilation: Experimental Evidence
2:19:58 - The Reality of Past, Present, and Future
2:34:01 - Time Dilation: Intuitive Explanation
2:37:57 - Motion's Effect On Space
2:55:11 - Motion's Effect On Space: Mathematical Form
3:00:47 - Length Contraction: Travel of Proxima Centauri
3:07:46 - Length Contraction: Disintegrating Muons
3:12:00 - Length Contraction: Distant Spaceflight
3:18:54 - Length Contraction: Horizontal Light Clock In Motion
3:27:17 - Coordinates For Space
3:36:37 - Coordinates For Space: Rotation of Coordinate Frames
3:48:36 - Coordinates For Space: Translation of Coordinate Frames
3:53:10 - Coordinates for Time
4:07:12 - Coordinates in Motion
4:26:08 - Clocks in Motion: Examples
4:35:02 - Clocks in Motion: Length Expansion From Asynchronous Clocks
4:38:42 - Clocks in Motion: Bicycle Wheels
4:45:01 - Clocks in Motion: Temporal Order
4:54:35 - Clocks in Motion: How Observers Say the Other's Clock Runs Slow?
5:08:50 - The Lorentz Transformation
5:16:52 - The Lorentz Transformation: Relating Time Coordinates
5:26:10 - The Lorentz Transformation: Generalizations
5:33:18 - The Lorentz Transformation: The Big Picture Summary
5:47:37 - Lorentz Transformation: Moving Light Clock
5:54:39 - Lorentz Transformation: Future Baseball
6:02:35 - Lorentz Transformation: Speed of Light in a Moving Frame
6:08:43 - Lorentz Transformation: Sprinter
6:10:44 - Combining Velocities
6:17:46 - Combining Velocities: 3-Dimensions
6:27:45 - Combining Velocities: Example in 1D
6:30:23 - Combining Velocities: Example in 3D
6:36:34 - Spacetime Diagrams
6:50:35 - Spacetime Diagrams: Two Observers in Relative Motion
7:01:16 - Spacetime Diagrams: Essential Features
7:11:42 - Spacetime Diagrams: Demonstrations
7:15:23 - Lorentz Transformation: As An Exotic Rotation
7:27:26 - Reality of Past, Present, and Future: Mathematical Details
7:39:00 - Invariants
7:43:55 - Invariants: Spacetime Distance
7:54:25 - Invariants: Examples
7:59:19 - Cause and Effect: A Spacetime Invariant
8:12:40 - Cause and Effect: Same Place, Same Time
8:22:37 - Intuition and Time Dilation: Mathematical Approach
8:29:46 - The Pole in the Barn Paradox
8:43:51 - The Pole in the Barn: Quantitative Details
9:04:43 - The Pole in the Barn: Spacetime Diagrams
9:08:25 - Pole in the Barn: Lock the Doors
9:20:50 - The Twin Paradox
9:29:28 - The Twin Paradox: Without Acceleration
9:46:34 - The Twin Paradox: Spacetime Diagrams
9:53:12 - Twin Paradox: The Twins Communicate
10:06:34 - The Relativistic Doppler Effect
10:19:00 - Twin Paradox: The Twins Communicate Quantitative
10:30:17 - Implications of Mass
10:40:06 - Force and Energy
11:00:12 - Force and Energy: Relativistic Work and Kinetic Energy
11:07:24 - E=MC2
11:26:28 - Course Recap
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Dr. Adam Gazzaley studies the neural mechanisms of memory and attention, how these processes change with normal aging and dementia, and how we might intervene therapeutically to alleviate memory and attention deficits. Recorded on 11/03/2011. [4/2012] [Show ID: 23203]
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