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.
The estimates from the Institute on Taxation and Economic Policy tax model, which are illustrated in these charts and tables, include the following key findings: â  The richest one percent of Americans pay 23.7 percent of total taxes and receive 21.6 percent of total income. â  The poorest one-fifth of Americans pay 2.1 percent of total taxes and receive 3.3 percent of total income.