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.
Below are compiled statistics on infidelity and marriage: Percentage of marriages that end in divorce in America: 53%. Percentage of arranged marriages (where parents pick their sons or daughters spouses) that end in divorce: 3%. Medical field(s) with the highest divorce rate: psychiatrists and marriage counselors. Percentage of marriages where one or both spouses admit to infidelity, either physical or emotional: 41%.