coil of wire is the kind of magnet that is a piece of lodestone.
coil of wire is the kind of magnet that is a piece of lodestone.
what kind of magnet is a piece of lodestone?
coil of wire
lodestone (disambiguation)









































a lodestone is a naturally magnetized piece of the mineral magnetite.









































lodestone may also refer to:









































section::::ships.









































bullet::::- , a former degaussing vessel of the royal navy









































bullet::::- , a former degaussing vessel of the united states navy









































section::::comics and games.









































bullet::::- lodestone (comics), a marvel comics supervillain









































bullet::::- lodestone, an alias of dc comics character rhea jones









































bullet::::- "lodestone", a video game developed by big robot









































bullet::::- lodestone comics, a sister company to deluxe comics









































bullet::::- the lodestone, an official website of "final fantasy xiv"









































bullet::::- lodestone games, a game development studio based in charlottesville, virginia









































section::::other.
lodestone (disambiguation)
although an ancient hematite artifact from the olmec era in mexico dating to roughly 1000 bc indicates the possible use of the lodestone compass long before it was described in china, the olmecs did not have iron which the chinese would discover could be magnetised by contact with lodestone. descriptions of lodestone attracting iron were made in the "guanzi", "master lu's spring and autumn annals" and "huainanzi". the chinese by the han dynasty (202 bc – 220 ad) began using north-south oriented lodestone ladle-and-bowl shaped compasses for divination and geomancy and not yet for navigation. the "lunheng", written by han dynasty writer, scientist, and philosopher wang chong (27 – c. 100 ad) stated in chapter 52: "this instrument resembles a spoon and when it is placed on a plate on the ground, the handle points to the south". there are, however, another two references under chapter 47 of the same text to the attractive power of a magnet according to needham (1986), but li shu-hua (1954) considers it to be lodestone, and states that there is no explicit mention of a magnet in "lunheng". the chinese polymath shen kuo (1031–1095) of the song dynasty (960–1279) was the first to accurately describe both magnetic declination (in discerning true north) and the magnetic needle compass in his "dream pool essays" of 1088, while the song dynasty writer zhu yu (fl. 12th century) was the first to mention use of the compass specifically for navigation at sea in his book published in 1119. even before this, however, the "wujing zongyao" military manuscript compiled by 1044 described a thermoremanence compass of heated iron or steel shaped as a fish and placed in a bowl of water which produced a weak magnetic force via remanence and induction; the "wujing zongyao" recorded that it was used as a pathfinder along with the mechanical south-pointing chariot.
list of chinese inventions