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 United States is one of the most religious places on earth, but it is also a nation of shocking religious illiteracy. Only 10 percent of American teenagers can name all five major world religions and 15 percent cannot name any. Nearly two-thirds of Americans believe that the Bible holds the answers to all or most of life's basic questions, yet only half of American adults can name even one of the four gospels and most Americans cannot name the first book of the Bible.