Heliographs: Cutting-Edge Victorian Military Communications скачать в хорошем качестве

Heliographs: Cutting-Edge Victorian Military Communications

Play World of Warships here: https://wo.ws/3SGK3R9 Thank you World of Warships for sponsoring this video. During registration use the code HSF2023 to get for free: 200 doubloons, 1 million credits, 7 Days of Premium Account time, HSF commander Misaki Akeno, and HSF commander Irizaki Mei.  Applicable to new users only. Like what I make? Want fewer sponsorship ad reads? Consider contributing to my Patreon at   / ourowndevices   Developed in the 1870s, heliographs used reflected sunlight to send coded messages over long distances. Surprisingly useful despite their simplicity, heliographs were used by military and civilian organizations (e.g. forestry services) for over 100 years. 0:00 Introduction 0:47 World of Warships Promo 2:21 Development of the Heliograph 6:31 Heliograph Users 9:15 Setup, Controls, and Accessories 12:14 Alternative Heliograph Designs 14:04 Survival Heliographs 15:00 Outro SOURCES: http://www.rcsigs.ca/index.php/Lamp_S... https://www.historynet.com/light-conv... http://www.smecc.org/heliograph_-_sig... https://www.royal-signals.org.uk/Data... https://books.google.ca/books?id=pzkZ... https://books.google.ca/books?id=sA5K... https://www.nps.gov/fobo/learn/histor... https://nzhistory.govt.nz/media/photo... https://www.gvrhc.org/Library/Heliogr... https://www.modulatedlight.org/Modula... http://phillosoph.blogspot.com/2016/0... https://patents.google.com/patent/US2...