Definition - What does Magnetic Disk mean? A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data. It is covered with a magnetic coating and stores data in the form of tracks, spots and sectors. Hard disks, zip disks and floppy disks are common examples of magnetic disks.
The Lowell Female Labor Reform Association (LFLRA) was one of the first American labor organizations organized by and for women. The Lowell Female Labor Reform Association was founded in 1844 by the  mill girls  of Lowell, Massachusetts. Sarah Bagley was the first president of the LFLRA.
Enduring about 60 years, the prison reform movement in time challenged nearly every assumption of traditional prison practice. It produced an entirely new model of prison for adults, the women's reformatory, which eventually was adopted by states throughout the country.as a movement to reform the conditions under which women were incarcerated. This effort, which began about 1870, continues to influence women's prisons today.