History of Compass | 合法醫療器材資訊網
Ithasamagneticneedleoracardthatcanrotatefreely,andifpositionedhorizontallyitwillalignitselfwiththemagneticfieldoftheEarthandpoint ...
HistoryOfCompass.com is place where you can read all about invention of the compass[1] including its history, inventors, making process, types[2], interesting facts[3] and other information.
People knew about magnet and how it affected iron 600 years before it was used for the first time as a compass. Even then it was not used for navigation but for geomancy. 900 years later it was used in astronomy and for orientation and for same purposes is used still.
Compasses differ according to purpose, complexity, materials and some solutions that were used to solve some problems that could appear during their use. They also changed during the history, from the moment they were invented.
A simple as it is, there is a skill in how to use compass, especially when it is us...
Compass | 合法醫療器材資訊網
Compass Invention | 合法醫療器材資訊網
compass | 合法醫療器材資訊網
Compass | 合法醫療器材資訊網
History of Compass | 合法醫療器材資訊網
History of the compass | 合法醫療器材資訊網
Smith College Museum of Ancient Inventions | 合法醫療器材資訊網
WHO INVENTED THE COMPASS? | 合法醫療器材資訊網
Who invented the magnetic compass? Navigating the timeline ... | 合法醫療器材資訊網
【絕緣電極注入針】許可證字號:衛署醫器輸字第004941號
器材品名:絕緣電極注入針許可證字號:衛署醫器輸字第004941號註銷狀態:已註銷註銷日期:1999/12/01註銷理由:未展延而逾期者;;...
【絕緣電極注入針】許可證字號:衛署醫器輸字第003911號
器材品名:絕緣電極注入針許可證字號:衛署醫器輸字第003911號註銷狀態:已註銷註銷日期:1988/01/08註銷理由:製造廠名稱變更有...