Magnetic Storage. Piano wire, an electromagnet and a microphone. This was all the Danish inventor Valdemar Poulsen (1869-1942) needed in 1898 to create the telegraphone or wire recorder â the first known device capable of recording sound magnetically.agnetic Storage. Piano wire, an electromagnet and a microphone. This was all the Danish inventor Valdemar Poulsen (1869-1942) needed in 1898 to create the telegraphone or wire recorder â the first known device capable of recording sound magnetically.
And as of 2016, there are about 2.3 million home-schooled students in the United States (Brian, 2016). The studies found that of these children, 83 percent were White, 5 percent were Black, 7 percent were Hispanic, and 2 percent were Asian or Pacific Islander.
In 2011, about one in four American Indians and Alaska Natives1 (26.4 percent) lived in poverty. In contrast, about one in 10 non-Hispanic whites (11 percent) lived in poverty (U.S. Census Bureau 2013). Not surprisingly, the Native American population is a relatively low-wealth population. In 2000, Native Americansâ median wealth was equal to only 8.7 percent of the median wealth among all Americans (Chang 2010, 14). For most Americans, a home is a key source of wealth. Native Americans, however, have a significantly lower homeownership rate than whites, and the homes they do own tend to be worth much less than those of whites (Insight Center for Community Economic Development 2009, 1).