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.
Â· Homeschooling â that is, parent-led home-based education â is an age-old traditional educational practice that a decade ago appeared to be cutting-edge and âalternativeâ but is now bordering on âmainstreamâ in the United States.It may be the fastest-growing form of education in the United States.Home-based education has also been growing around the world in many other nations (e.g., Australia, Canada, France, Hungary, Japan, Kenya, Russia, Mexico, South Korea, Thailand, and the United Kingdom).Â· There are about 2.2 million home-educated students in the United States.There were an estimated 1.73 to 2.35 million children (in grades K to 12) home educated during the spring of 2010 in the United States (Ray, 2011).t may be the fastest-growing form of education in the United States. Home-based education has also been growing around the world in many other nations (e.g., Australia, Canada, France, Hungary, Japan, Kenya, Russia, Mexico, South Korea, Thailand, and the United Kingdom).