A magnet is an object that has a magnetic field. The word magnet comes from the Greek μαγνήτης λίθος (magnētēs lithos), which means "magnesian stone". Magnesia was an area in Ancient Greece, in present-day Manisa, Turkey where deposits of magnetite have been discovered since antiquity. Ancient Chinese (2nd century BCE to 2nd century CE) navigators has one of the earliest recorded use of a compass devices that uses the principle of magnets.

Introduction

---

In the modern sense, a magnet is an object that has a magnetic field. It can be in the form of a permanent magnet or an electromagnet. Permanent magnets do not rely upon outside influences to generate their field. Electromagnets rely upon electric current to generate a magnetic field - when the current increases, so does the field. Magnets are attracted to, or repelled by, other materials. A material that is strongly attracted to a magnet is said to have a high permeability. Iron and steel are two examples of materials with very high permeability, and they are strongly attracted to magnets. Liquid oxygen is an example of something with a low permeability, and it is only weakly attracted to a magnetic field. Water has such a low permeability that it is actually slightly repelled by magnetic fields. Everything has a measurable permeability: people, gases, and even the vacuum of outer space.

The SI unit of magnetic field strength is the tesla, and the SI unit of total magnetic flux is the weber. 1 weber = 1 tesla flowing through 1 square meter, and is a very large amount of magnetic flux.

More on [ Magnet ]

Magnets - Twitter Search

Des magnets en chocolat http://goo.gl/fb/hQeN #wishlist #vusurleweb
SandrineCamus (Sandrine Camus) Wed, 06 Jan 2010 19:16:35 -0000
Des magnets en chocolat http://goo.gl/fb/hQeN #wishlist #vusurleweb
@feltique hmmm i agree making casts of your nipplage to sell as fridge magnets, is bizzar.. better sold as coat hooks.. sorry man moment lol
vwbusfan (Webby) Wed, 06 Jan 2010 19:08:51 -0000
@feltique hmmm i agree making casts of your nipplage to sell as fridge magnets, is bizzar.. better sold as coat hooks.. sorry man moment lol
@vwbusfan someone makes nipple magnets. as in fridge magnets, not magnets to be worn on them. Just a bit too wierd for me
feltique (feltique) Wed, 06 Jan 2010 19:06:49 -0000
@vwbusfan someone makes nipple magnets. as in fridge magnets, not magnets to be worn on them. Just a bit too wierd for me
@Doozywhoop You might as well ask how MAGNETS or GRAVITY work. NO ONE KNOWS! We just accept it
ac_money (Alan C) Wed, 06 Jan 2010 19:01:19 -0000
@Doozywhoop You might as well ask how MAGNETS or GRAVITY work. NO ONE KNOWS! We just accept it
Sushi Magnets! http://www.etsy.com/view_listing.php?listing_id=34624014
lexleigh (Lex) Wed, 06 Jan 2010 19:00:09 -0000
Sushi Magnets! http://www.etsy.com/view_listing.php?listing_id=34624014
Got up this morning to find that my hubby had put 3 "fat" pics of himself & spelled out "run fat boy" with the letter magnets. LOL
ascrappydesign (ascrappydesign) Wed, 06 Jan 2010 18:49:40 -0000
Got up this morning to find that my hubby had put 3 "fat" pics of himself & spelled out "run fat boy" with the letter magnets. LOL

Subscribe to Magnets RSS feed