Enigma code-breaking machine rebuilt at Cambridge

it's a demonstration of the side kilometer so the rotors Arlo's up and the order of three to one from left to right now the same is done in three two one right and same mechanism as on the Enigma machine shuts the road cameras and the windows it display the letters so we're gonna go for a random one so I'm just gonna pick say you then set out the right one the same was the left and you've moved the right-hand rotor or the right-hand rotor system three steps forward we then have a choice of choosing any left one on the lam Board of flicking switch start with a you then move up the rear start until you can see all the globe bulbs are glowing and return it back to the point of highest resistance turn off the letter and see you less there hadn't lit up a previous set in the previous cycles actually so you can see in this case for FK o which cycle we have for the first time we had 18 bulbs lighting up and the second time at 8 bulbs lighting up now I'm just gonna try another one now so FK p so today we have the left hand as our row settings and the right hand system is three steps ahead I'm just going to start a again and wind up the rheostat and here you can see 24 bulbs are lighting so H and W have not lit yet see they remain two bulbs light I'll try again for another system FK q three steps ahead on the right I'll start off with a and we can see the first lots of lighting up here we have one two three four five six seven eight and they can be four so I can see at the moment a ball that has not yet letters G we can see another eight lighting up I can also see the age it's not lit up yet here's another cycle to four so finally the last one that has all those up I can see is L and it's other pair you now it would work equally if I flick switch you let L will light up also the same is true for any other cycle had a shade

Channel: Department of Engineering, University of Cambridge

Views: 18,889

Keywords: codebreaking, Alan Turing, cryptology, engineering, Hal Evans, King's College, Bletchley Park, Marian Rejewski, World War Two

Id: VSO8pGQOXaw

Length: 4min 33sec (273 seconds)

Published: Mon Jul 13 2020