Can you crack the toughest codes of the 20th century? Imperial War Museums have created a cryptographic challenge worthy of the finest minds of Bletchley Park and Room 40. There are hundreds of head-scratching ciphers included which are certain to keep you entertained for hours, alongside 20th-century military history puzzles and crosswords perfect for the armchair general.
For those who need a helping hand, the book also includes a brief history of cryptography, along with tips and tricks to help you make the connections you need to decrypt and solve the puzzles. Whether you are a military history buff or a lateral-thinking lover, good luck: your country needs you!
This book is a comprehensive, accessible, illustrated exploration of the fascinating science of colour. Organized by 50 of the most essential questions about color across a variety of fields (physics, chemistry, biology, technology, and psychology) Arielle and Joann Eckstut examine how and why we see colour,...
A special edition of the Haynes Apollo 13 Manual, to coincide with the 50th Anniversary of the Moon mission April 1970 which very nearly ended in catastrophe. The special edition includes an expanded look at what was learned from the investigation, and how these lessons...
Alan Turing designed some of the earliest computers and was pivotal in the cracking of the Enigma code used by the German Navy. Tragically, his accomplishments were never fully recognised during his lifetime due to his homosexuality, then a crime in the UK. In 1952 he...
Celebrate women working and achieving in STEM with this brilliant pin. Part of our Badges of Honour range. Enameled blue metal badge. Measures approx 3 cm long.