Periodic Table Poster   My periodic table poster is now available!Periodic Table PosterPeriodic Table PosterPeriodic Table Poster
3D3DCore of SoundBug speaker.
This is the heart (not easy to get to!) of a SoundBug brand magnetostrictive alloy speaker. The rod you see sticking out of the copper coil is made of Terfenol alloy, which changes its length when exposed to a magnetic field.
Source: Max Whitby of RGB
Contributor: Max Whitby of RGB
Acquired: 17 April, 2009
Text Updated: 17 April, 2009
Price: Donated
Size: 0.5"
Purity: <50%
Terbium