HHomeBackground Color:He
LiBeNeodymium Main PageBlack White GrayBCNOFNe
NaMgNeodymium Pictures PageAlSiPSClAr
KCaNeodymium Technical DataScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnUutUuqUupUuhUusUuo

Headphone magnets.
An example of the element Neodymium

Sample Image
Neodymium Headphone magnets
Headphone magnets.
There's nothing special about these mini-headphones except that their package uses the word NEODYMIUM in very prominent letters right on the front. It's not every day you see a rare earth being promoted in quite such flashy letters, but they are quite right to do so: It is neodymium-iron-boron magnets that make very small, very light, very good-sounding headphones possible. (To make a speaker sound good you need a strong magnet, and to make it light you need a small magnet. Neodymium-iron-boron magnets are the strongest available for a given weight, which is why they are used in essentially all headphones these days.)
Source: San Jose Airport
Contributor: San Jose Airport
Acquired: 29 May, 2003
Price: $16
Size: 0.2"
Purity: <35%
The Elements book Mad Science book Periodic Table Poster  Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here!