# Kan-lo̍k-gî

Kan-lo̍k-gî
A gyroscope in operation, showing the freedom of rotation in all three axes. The rotor will maintain its spin axis direction regardless of the orientation of the outer frame.
Diagram of a gyro wheel. Reaction arrows about the output axis (blue) correspond to forces applied about the input axis (green), and vice versa.
Animation of a gyro wheel in action
Gyroscope designed by Léon Foucault in 1852. Replica built by Dumoulin-Froment for the Exposition universelle in 1867. National Conservatory of Arts and Crafts museum, Paris.
**Kan-lo̍k-gî** (Gyroscope; uì kóo elliniká-gú γῦρος *gŷros*, tio̍h-sī 'înn' ê ì-sù; kah σκοπέω *skopéō*, 'khuànn' ê ì-sù) sī tsi̍t-tsióng iōng teh tshik-liông hi̍k-tsiá pó-tshî hong-hiòng kah kak-tōo ê siat-pī. Kan-lo̍k-gî sī tsi̍t-tsióng tńg-se̍h ê lûn-á hi̍k înn-puânn; kî-tiong ê tńg-se̍h tio̍k (tsū-suân tio̍k) ē-tàng tsū-iû lâi ka-kī tîng-hiān jīm-hô hong-hiòng. Kin-kì "kak tōng-liōng" (angular momentum) siú-hîng (conservation) ê guân-lí, tńg-se̍h ê sî-tsūn, kan-lo̍k-gî ê tio̍k hong-hiòng bô siū-tio̍h kè-á uai-khi hi̍k-tsiá tńg-se̍h ê íng-hióng.

Khiā-tī kî-thann kang-tsok guân-lí ê kan-lo̍k-gî mā tsûn-tsāi, pí-jû tiān-tsú siat-pī tang-tiong ê bî tsing-phìnn hong-tsong ê MEMS kan-lo̍k-gî (ū-tang-sî-á kiò-tsò Kan-lo̍k-gî), kòo-thài huân-hîng luî-siā-khì, kong-siam Kan-lo̍k-gî kah ki̍k-kî lîng-bín ê liōng-tsí Kan-lo̍k-gî.

Kan-lo̍k-gî ê ìng-iōng pau-kuat "kuàn-sìng tō-hâng hē-thóng" (inertial navigation system), pí-jû teh Hubble thài-khong tiàu-kiànn tang-tiong, hi̍k-tsiá teh tsuí-hā tsiâm-tíng ê kǹg-khak lāi. Iû-î i-ê tsing-khak-tōo, "huê-tsuán king-uī-gî" (gyrotheodolite) iah-koh sú-iōng kan-lo̍k-gî lâi pó-tshî khinn-tō tshái-khòng ê hong-hiòng. Kan-lo̍k-gî ē-tàng iōng-teh kòo-kiàn kan-lo̍k lô-kenn, póo-tshiong hi̍k-tsiá thè-tāi "tsî lô-kenn" (magnetic compass; teh tsûn-pi̍k, hui-ki kah hâng-thian-khì, í-ki̍p it-puann ê tshia-lióng tang-tiong), í-lâi hia̍p-tsōo ún-tīng (khóng-bûn-tshia, o-tó-bái kah tsûn-pi̍k) hi̍k-tsiá iōng-tsò "kuàn-sìng tsè-tō hē-thóng" (inertial guidance system) ê tsi̍t-pōo-hūn. MEMS kan-lo̍k-gî teh tsi̍t-kuá-á siau-huì tiān-tsú sán-phín tang-tiong tsiânn-siū huan-gîng, tsu-jû tì-lîng tshiú-kī.

## Tsù-kái

## Tsham-khó bûn-hiàn

* Feynman, Richard; Gottlieb, Michael; Leighton, Ralph (2013). *Feynman's Tips on Physics, A Problem-Solving Supplement to the Feynman Lectures on Physics*. Basic Books.

## Ên-sin ua̍t-to̍k

* Felix Klein and Arnold Sommerfeld, "*Über die Theorie des Kreisels*" (Tr., About the theory of the gyroscope). Leipzig, Berlin, B.G. Teubner, 1898–1914. 4 v. illus. 25 cm.
* Audin, M. *Spinning Tops: A Course on Integrable Systems*. New York: Cambridge University Press, 1996.
* Crabtree, H. "An Elementary Treatment of the Theory of Spinning Tops and Gyroscopic Motion". Longman, Green and C), 1909. Reprinted by Michigan Historical Reprint Series.
* Proceedings of Anniversary Workshop on Solid-State Gyroscopy, 19–21 May 2008. Yalta, Ukraine. Kyiv-Kharkiv. ATS of Ukraine, ISBN 978-976-0-25248-5 (2009)
* E. Leimanis (1965). *The General Problem of the Motion of Coupled Rigid Bodies about a Fixed Point*. (Springer, New York).
* Perry J. "Spinning Tops". London Society for Promoting Christian Knowledge, 1870. Reprinted by Project Gutemberg ebook, 2010.
* Walter Wrigley, Walter M. Hollister, and William G. Denhard (1969). *Gyroscopic Theory, Design, and Instrumentation.* (MIT Press, Cambridge, MA).
* Cooper, Donald & University of Western Australia. Dept. of Mechanical and Materials Engineering 1996, An investigation of the application of gyroscopic torque in the acceleration and retardation of rotating systems.

## Tsham-ua̍t

* Wolfram Demonstrations Project
* Foucault's gyroscope
* Discover (magazine)
* Wolfram Research
* Sensors (journal)
* Ballistic missile

## Guā-pōo liân-kiat

 Wikibooks ū koan-hē **High School Physics/Rotational Motion** ê kàu-châi kap soat-bêng-su.
* The Royal Institution's 1974–75 Christmas Lecture Archived 4 January 2010 at the Wayback Machine. Professor Eric Laithwaite
* One-Wheeled Robot-Gyrostat Archived 8 November 2012 at the Wayback Machine. by Olga Kapustina and Yuri Martynenko Wolfram Demonstrations Project
* Apostolyuk V. Theory and Design of Micromechanical Vibratory Gyroscopes Archived 13 August 2017 at the Wayback Machine.