Computerphile

Legendary cyber-security expert Professor Gene Spafford joins us to try to define what cyber-security even is! "Spaf" as he's known, is a faculty member at Purdue University and now Honorary Professor at the University of Nottingham.

Dr Spafford is a Fellow of the American Academy of Arts and Sciences, the Association for the Advancement of Science, the ACM, the IEEE, and the (ISC)2; a Distinguished Fellow of the ISSA; and a member of the Cyber Security Hall of Fame, the only person to ever hold all these distinctions.

The book "Cybersecurity, Myths and Misconceptions" can be found here: https://bit.ly/C_CyberMythsBook

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This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: https://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

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If musical instruments could speak, what stories could they tell? Professor Benford and his team have created an instrument that documents its own life - the Carolan Guitar

Extra Bits – More on the build of the Carolan Guitar: http://youtu.be/ZGLlt2XBro4
The Penguin Barcode: http://youtu.be/kW39Mt5kscQ
Musical Floppy Drives: http://youtu.be/C3dU5u4xXaY

nb thankfully there exists no more footage of me butchering any songs on the guitar - I am really a drummer, not a guitarist! -Sean

For more info on the instrument, visit: http://www.carolanguitar.com

http://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

Learn more about your ad choices. Visit megaphone.fm/adchoices

Mike talks through a binary search bug that was undiscovered for years!

https://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: https://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Learn more about your ad choices. Visit megaphone.fm/adchoices

$20 off your 1st purchase at www.LittleBits.com use the code “COMPUTERPHILE”
The Barber Paradox: Professor Brailsford continues the history of undecidability.

History of Undecidability Part1: http://youtu.be/nsZsd5qtbo4
Turing & The Halting Problem: http://youtu.be/macM_MtS_w4

http://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

Learn more about your ad choices. Visit megaphone.fm/adchoices

You can optimise for speed, power consumption or memory use & tiny changes can have a negligible or huge impact, but what should you optimise and most importantly, when? Dr Steve Bagley has an example!

https://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: https://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Learn more about your ad choices. Visit megaphone.fm/adchoices

Our thanks to http://www.harrys.com/ use the coupon code "COMPUTERPHILE" for $5 off
3D perspective personalised to multiple viewers of the screen - cutting edge research which Alex explains.

Many thanks to Alexander Kulik from the Bauhaus-Universität Weimar for showing us their six user VR system.


http://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

Learn more about your ad choices. Visit megaphone.fm/adchoices

Ahead of an upcoming Python implementation, Professor Thorsten Altenkirch goes through the details and definitions of Regular Expressions.

https://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: https://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Learn more about your ad choices. Visit megaphone.fm/adchoices

With images copied via instant screen-grab & websites stripping metadata clean away where does it leave the creators? Professor Derek McAuley talks about the need for a digital exchange.

Public Key Cryptography: http://youtu.be/GSIDS_lvRv4
How Computer Memory Works: http://youtu.be/XETZoRYdtkw
How Broadband ADSL Works: http://youtu.be/uwtGfyna62I
VR Simulator: http://youtu.be/Lm0lA0enPSk

Thanks to the following for permission to use their pictures and music

Hudson Super Six
David Wayman
@gmjhowe

http://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

Learn more about your ad choices. Visit megaphone.fm/adchoices

Neural Radiance Field - NeRF - Dr Mike Pound and PhD Student Lewis Stuart demonstrate how a series of photos or a piece of video can lead to a 3D model in your computer.

https://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: https://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Learn more about your ad choices. Visit megaphone.fm/adchoices

What was the first undecidable problem? Professor Brailsford takes us on a computerphile tangent & gives us his angle on a pre-computer example of undecidability.

Note from Professor Brailsford: a couple of corrections for this film:
1/ "... early 18th Century" for Gauss should be " ... early 19th century"
2/ "... 100 years ago" for Newton should be "... 100 years before Gauss

3/ The Greek word I was struggling with was "Boeotians". I have now taken expert advice which tells me that the "oe" is pronounced "ee" as in "Oedipus". Hence a reasonable approximation to the correct pronunciation is "Bee-oh-shuns"

4/ In my excitement to get the message across I sometimes refer, in the video, to Euclid's 5th axiom being a "proposition". However it is more accurately a "postulate" i.e. something which should be provable from the other axioms/postulates of the Euclidean system. The fact that it can't be thus proved means that the other axioms are insufficiently powerful to prove it -- hence it is "undecidable" within that axiom system."

Riemann Hypothesis – Numberphile: http://youtu.be/d6c6uIyieoo
Fermat's Last Theorem – Numberphile: http://youtu.be/qiNcEguuFSA
Turing & The Halting Problem: http://youtu.be/macM_MtS_w4


http://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

Learn more about your ad choices. Visit megaphone.fm/adchoices