Classical ciphers | Cryptographic algorithms
The Beaufort cipher, created by Sir Francis Beaufort, is a substitution cipher similar to the Vigenère cipher, with a slightly modified enciphering mechanism and tableau. Its most famous application was in a rotor-based cipher machine, the Hagelin M-209. The Beaufort cipher is based on the Beaufort square which is essentially the same as a Vigenère square but in reverse order starting with the letter "Z" in the first row, where the first row and the last column serve the same purpose. (Wikipedia).
http://www.mekanizmalar.com/napier_deltic_engine.html Working principle of a Napier Deltic Engine.
From playlist Engines
CERIAS Security: Applying Recreational Mathematics to Secure Multiparty Computation 3/5
Clip 3/5 Speaker: Yvo Desmedt · University College, London The problem of a mice traveling through a maze is well known. The maze can be represented using a planar graph. We present a variant of the maze. We consider a grid vertex colored planar graph in which an adversary can choose
From playlist The CERIAS Security Seminars 2007
Vernier caliper / diameter and length of daily used objects.
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From playlist Fine Measurements
Alexander Beilinson - Height pairing and vanishing cycles
Correction: The affiliation of Lei Fu is Tsinghua University.
From playlist Conférence « Géométrie arithmétique en l’honneur de Luc Illusie » - 5 mai 2021
World's Unluckiest Picks (feat. Ayliean MacDonald) - Objectivity 260
Ayliean MacDonald is back at the Royal Society to take a 'lucky dip' in to the famous card catalogue... What will she pick?! More links below ↓↓↓ Objectivity on Patreon: https://www.patreon.com/objectivity Ayliean is an artist, maths teacher and science communicator. Find out more abo
From playlist Special Guests on Objectivity
C34 Expanding this method to higher order linear differential equations
I this video I expand the method of the variation of parameters to higher-order (higher than two), linear ODE's.
From playlist Differential Equations
Breakthrough: Polar Bear Witness
For USGS wildlife biologist Karyn Rode, tracking and tranquilizing polar bears from a helicopter are just the first thrilling steps in her research. After acquiring various samples from sleeping bears, Dr. Rode's unique understanding of what they eat and how quickly they metabolize nutrien
From playlist Breakthrough: Portraits of Women in Science
Coccolithophore Evolution Is Driven By Earth's Orbital Changes
Good telescope that I've used to learn the basics: https://amzn.to/35r1jAk Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath Alternatively, PayPal donations can be sent here: http://paypal.me/whatdamath Hello and welcome! My name is Anton and in this video, we will tal
From playlist Amazing Planet Earth
Almost Not History: Darwin and HMS Beagle
February 12 represents the 214th birthday of Charles Darwin, a scientist whose ideas transformed human understanding of the natural world, and undoubtedly one of the most influential scientists in history. But that history may have been different, as Dawrin’s career altering voyage aboard
From playlist History of Science and Math
Discover the rather astonishing story of the SS Baychimo, a WW1 German ship that later used by the British in the Canadian Arctic, was abandoned and survived drifting in the pack ice for decades. The Baychimo was genuine 'ghost ship', and may still be out there today. Help support my chan
From playlist Ships
World's First Air Hijack - Allied Aircrew's Daring 1942 Escape
The world's first air hijacker was a South African Air Force pilot serving with the RAF. Find out how he and his British and New Zealand crew managed to free themselves from Italian captivity by the novel method of hijacking the aircraft that rescued them! Check out my latest book, The Bri
From playlist Daring Raids
A-Level Maths K1-00 [Edexcel Large Data Set - Weather]
Thanks to Stuart Price for the invaluable notes! Navigate all of my videos at https://sites.google.com/site/tlmaths314/ Like my Facebook Page: https://www.facebook.com/TLMaths-1943955188961592/ to keep updated Follow me on Instagram here: https://www.instagram.com/tlmaths/ Many, MANY t
From playlist A-Level Maths K1: The Large Data Set and Sampling Methods
EDEXCEL LARGE DATA SET A-LEVEL MATHS
A breakdown of Edexcel's Large Data Set for A-Level Maths Don't forget to Like and Subscribe for more there is a high chance this will be in the exams in the summer #alevelmaths #maths
From playlist A-Level Maths
variable displacement piston pump
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From playlist Pumps