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.
As a group, Americans who have a gun at home see themselves differently than do other adults. According to the survey, adults in gun-owning households are more likely to think of themselves as an âoutdoor personâ (68% vs. 51%) or âa typical Americanâ (72% vs. 62%), and to say âhonor and duty are my core valuesâ (59% vs. 48%).