Editing Attitude indicator (section)

==History==
Before the advent of aviation, artificial horizons were used in [[celestial navigation]]. Proposals of such devices based on gyroscopes, or spinning tops, date back to the 1740s,<ref>Jörg F. Wagner: ''From Bohnenberger's Machine to Integrated Navigation Systems. 200 Years of Inertial Navigation.'' Photogrammetric Week 05. {{Cite web |url=http://www.ifp.uni-stuttgart.de/publications/phowo05/160wagner.pdf |title=Photogrammetric Week 2005 |access-date=2022-12-04 |archive-date=2007-07-06 |archive-url=https://web.archive.org/web/20070706205209/http://www.ifp.uni-stuttgart.de/publications/phowo05/160wagner.pdf |url-status=live }}</ref> including the work of [[John Serson]]. Later implementations, also known as ''bubble horizons'', were based on bubble levels and attached to a [[sextant]].<ref>I.C.B. Dear, Peter Kemp (ed.): ''The Oxford Companion to Ships and the Sea'', Oxford University Press, 2016, pp. 22, 77</ref> In the 2010s, remnants of an artificial horizon using liquid mercury were recovered from the wreck of [[HMS Erebus (1826)|HMS ''Erebus'']].<ref>[https://parks.canada.ca/lhn-nhs/nu/epaveswrecks/culture/archeologie-archeology/artefacts-artifacts/2015#21 2015 Artifacts], [https://parks.canada.ca/lhn-nhs/nu/epaveswrecks/culture/archeologie-archeology/artefacts-artifacts/2018#18-03 2018 Artifacts], Wrecks of HMS Erebus and HMS Terror National Historic Site</ref>