In mathematics, the tunnel number of a knot, as first defined by Bradd Clark, is a knot invariant, given by the minimal number of arcs (called tunnels) that must be added to the knot so that the complement becomes a handlebody. The tunnel number can equally be defined for links. The boundary of a regular neighbourhood of the union of the link and its tunnels forms a Heegaard splitting of the link exterior. (Wikipedia).
Fastest Train 574 km/h - watch the top left speed
Video of a train speed test in France
From playlist Trains
The World's LONGEST Immersed Tube Tunnel
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From playlist Tunnels!
New York's Deep Tunnel - The Lincoln Tunnel's Forgotten Past - IT'S HISTORY
Sponsored by Blinkist: Use my special link to start your free 7 day trial with Blinkist and get 25% off a Premium membership https://www.blinkist.com/itshistory As one of the busiest vehicular tunnels in the world and a cousin tunnel to the highly successful Holland Tunnel, the Lincoln Tu
From playlist The History of Tunnels!
What is the Longest Deepest Tunnel in the World? (Gotthard Base Tunnel)
SUPPORT CR on PATREON: http://bit.ly/2qBHcvf The Gotthard Base Tunnel stretches 35.5 miles (57.5 km) under the Alps in Switzerland. Completed in 2016 after a nearly 20 years of construction, the tunnel overtook the Seikan Tunnel in Japan as the longest in the world. Aside from being the
From playlist Concerning Engineering
A Rare Look Inside Shanghai Tower
Get a glimpse of the sky gardens, which set Shanghai Tower apart from any high-rise ever built. http://bit.ly/1aNxP18
From playlist Shanghai Tower | The B1M Mail Feature
This video explores one of the most fascinating and esoteric properties of quantum mechanics: quantum tunnelling. The video begins by explaining an apparent paradox involving alpha decay, and then goes on to show how the theory of quantum tunnelling can provide a solution. The Schrodinger
From playlist Quantum Physics
Quantum Transport, Lecture 7: Coulomb Blockade
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: This lecture introduces charging effects in transport, the concept and applications of single electron transistors based on Coulomb blockade are revealed. Quantum Transport course d
From playlist Quantum Transport
The Secret Tunnels Beneath New York - IT'S HISTORY
Today we discover several of the secret and forgotten tunnels beneath New York City, their history, and what remains today. Chapters: 00:00 - History of the Cobble hill / Atlantic Avenue tunnel 03:35 - The discovery of the lost Cobble hill tunnel 04:33 - Manhattans lost mail tunnel
From playlist The History of Tunnels!
Wind Tunnel Corrections and Data Reduction
This is the second of our 3 part series on wind tunnel testing. In this video, we discuss 11 different corrections and data reduction processes that are applied to raw wind tunnel data to transform it into data that more closely resembles full scale, free air flight. Topics and timestamp
From playlist Flight Mechanics
What is The Highest Tunnel in America? (The Eisenhower Tunnel)
The Eisenhower Memorial Tunnel, about 60 miles west of Denver on Interstate 70, sits at 11,013 feet at the East Portal and 11,158 feet at the West Portal. The Tunnel traverses through the Continental Divide at an average elevation of 11,112 feet. When initially opened in the 1970s, the tun
From playlist IT'S HISTORY Feature Videos
Forgotten Tunnels Under Chicago - EXPLORING The History of Chicago Tunnels - IT'S HISTORY (VIDEO)
» JOIN OUR COMMUNITY FOR MORE HISTORY KNOWLEDGE! Write us on Facebook: http://bit.ly/ITSHISTORYfb » SUPPORT US ON PATREON! https://www.patreon.com/blastfromthepast Below the sewers and subways of Chicago, are over 60-miles of forgotten 19th and 20th century train tunnels. This myste
From playlist Tales of Urban Decay
Indian Railways Best Advertisement
This is one of the Indian Railways Best Advertisement Watch & Share :)
From playlist We are like this only
AQC 2016 - What is the Computational Value of Finite Range Tunneling?
A Google TechTalk, June 27, 2016, presented by Vasil Denchev (Google) ABSTRACT: Quantum annealing (QA) has been proposed as a quantum enhanced optimization heuristic exploiting tunneling. Here, we demonstrate how finite range tunneling can provide considerable computational advantage. For
From playlist Adiabatic Quantum Computing Conference 2016
DEFCON 17: Catching DNS Tunnels with AI - A Talk About AI, Geometry and Malicious Network Traffic
Speaker: jhind Security Researcher The in-depth explanation, demonstration and release of a working adaptive solution for data mining DNS tunnels from network traffic. For more information visit: http://bit.ly/defcon17_information To download the video visit: http://bit.ly/defcon17_vide
From playlist DEFCON 17
Problem #9 - Tunnel Through Earth
Problem #9 - Tunnel Through Earth
From playlist Bi-weekly Physics Problems
Transport in topological junctions by Krishnendu Sengupta
Program The 2nd Asia Pacific Workshop on Quantum Magnetism ORGANIZERS: Subhro Bhattacharjee, Gang Chen, Zenji Hiroi, Ying-Jer Kao, SungBin Lee, Arnab Sen and Nic Shannon DATE: 29 November 2018 to 07 December 2018 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Frustrated quantum magne
From playlist The 2nd Asia Pacific Workshop on Quantum Magnetism
Solution 1/2 Problem #9 - Tunnel Through Earth
Solution 1/2 Problem #9 - Tunnel Through Earth
From playlist Solutions to Bi-weekly Physics Problems
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From playlist Great Britain