The Strange Tail of Spinosaurus | Podcast | Overheard at National Geographic
Spinosaurus has long been a superstar among dinosaur fans, with its massive alligator-like body and a huge “sail” of skin running the length of its spine. Though the fossil was unearthed a century ago, scientists hadn’t been able to say exactly what it looked like because only a few bones
From playlist Podcast | Overheard at National Geographic
River Monster': 50-Foot Spinosaurus | National Geographic
Spinosaurus is the largest carnivore to ever walk the Earth. National Geographic Emerging Explorer Nizar Ibrahim and his team in Morocco discovered crucial elements of the dinosaur’s skeleton that led to some interesting conclusions. Spinosaurus may have used all four limbs to walk, unlike
From playlist Science and Exploration | National Geographic
Phylum Rotifera Part 1: General Characteristics
It's time to wrap up our study of Gnathifera, and this means investigating phylum Rotifera. These are the wheel animals, and we will need a few tutorials to get through them all. Some species are free-living and some are parasitic, and you've probably had some in your body, since they're p
From playlist Zoology
Phylum Rotifera Part 2: Four Major Clades
Now that we understand the general characteristics of phylum Rotifera, let's dig into some of the clades within this phylum. These would be Bdelloidea, Seisonidea, Monogononta, Acanthocephala. Their relationships and phylogeny are still not firmly known, but let's talk about what we do kno
From playlist Zoology
Sir Michael Atiyah, What is a Spinor ?
Sir Michael Atiyah, University of Edinburgh What is a Spinor?
From playlist Conférence en l'honneur de Jean-Pierre Bourguignon
Rudolf Zeidler - Scalar and mean curvature comparison via the Dirac operator
I will explain a spinorial approach towards a comparison and rigidity principle involving scalar and mean curvature for certain warped products over intervals. This is motivated by recent scalar curvature comparison questions of Gromov, in particular distance estimates under lower scalar c
From playlist Talks of Mathematics Münster's reseachers
Index Theory and Flexibility in Positive Scalar Curve Geometry -Bernhard Hanke
Emerging Topics Working Group Topic: Index Theory and Flexibility in Positive Scalar Curve Geometry Speaker: Bernhard Hanke Affilaion: Augsburg University Date: October 18, 2018 For more video please visit http://video.ias.edu
From playlist Mathematics
Spinosaurus: Your Dinosaurs Are Wrong #17
http://thegeekgroup.org/ - It's finally here, the oft-requested episode looking at Spinosaurus! Steve picks the toy over, and shows why spinosaurus is much more unique than just "the meat eater with the sail on its back." Video Links: 00:57 http://www.sciencemag.org/content/345/6204/161
From playlist Your Dinosaurs Are Wrong
An Introduction to Class-S and Tinkertoys (Lecture 1) by Jacques Distler
Program: Quantum Fields, Geometry and Representation Theory ORGANIZERS : Aswin Balasubramanian, Saurav Bhaumik, Indranil Biswas, Abhijit Gadde, Rajesh Gopakumar and Mahan Mj DATE & TIME : 16 July 2018 to 27 July 2018 VENUE : Madhava Lecture Hall, ICTS, Bangalore The power of symmetries
From playlist Quantum Fields, Geometry and Representation Theory
Michael Atiyah, What is a Spinor
From playlist Number Theory
Phylum Platyhelminthes Part 1: General Characteristics
The first phylum within Spiralia that we will investigate is Platyhelminthes. These are the so-called flatworms. What are their characteristics? What are the clades within this phylum? Let's set ourselves up for a thorough investigation! Script by Ryan Helcoski Watch the whole Zoology pl
From playlist Zoology
What is a Four-Vector? Is a Spinor a Four-Vector? | Special Relativity
In special relativity, we are dealing a lot with four-vectors, but what exactly is a four-vector? A four-vector is an object with four entries, which get transformed and changed in a very special way after we change our frame of reference. More precisely, a four-vector transforms like a (1
From playlist Special Relativity, General Relativity
Jean-Pierre Bourguignon: Revisiting the question of dependence of spinor fields and Dirac [...]
Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b
From playlist Geometry
This is an expository talk on the monstrous moonshine conjectures about the monster simple group in mathematics.
From playlist Math talks
Quantum Mechanics 12b - Dirac Equation II
Here we explore solutions to the Dirac equation corresponding to electrons at rest, in uniform motion and within a hydrogen atom. Part 1: https://youtu.be/OCuaBmAzqek
From playlist Quantum Mechanics
Spinor Normalization | Solving the Dirac Equation
In this video, we will show you how to normalize a spinor. This is actually a very delicate question, and unfortunately there are infinitely many allowed ways to normalize a spinor. But some normalizations are more useful than others. Contents: 00:00 Setup 00:45 Constraint 02:00 Two Conv
From playlist Quantum Mechanics, Quantum Field Theory