How Does a Compass Work? | 合法醫療器材資訊網
If youre lost in the woods, your best chance of finding your way might be a tiny magnet.
A magnet is what makes a compass point north — the small magnetic pin in a compass is suspended so that it can spin freely inside its casing and respond to our planets magnetism[1].
A compass needle aligns itself and points toward the top of Earth[2]s magnetic field[3], giving explorers and lost souls a consistent sense of direction.
Related: How do compasses tell which way is north at the South Pole?[4]
How it worksA compass points north because all magnets have two poles[5] , a north pole and a south pole, and the north pole of one magnet is attracted to the south pole of another magnet. (You may have seen this demonstrated by a pair of simple bar magnets or refrigerator magnets pushed end to end.)
The Earth is a magnet[6] th...
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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...
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