The Phonautograph and Precursors to Edison's Phonograph. An 1859 Koenig phonautograph. While Thomas Edison is rightly credited with the invention of the cylinder phonograph and the means of playing back sound, his ideas were clearly influenced by numerous others who preceded him.
itâs best time to climb El Capitan or Raft along the Merced River. Also, spring if best time to see the Yosemite Falls in all their glory, âwhen melting snow fills the streams with volume. Yosemite is one of the best places in the US to observe the planets, stars, and galaxies.
Yosemite National Park-Half Dome, the hike is approximately 17 miles round trip. The hike to Half Dome can take anywhere from 10-12 hours. Cables are put up in late May and taken down in October. The elevation will increase by 4,800', from Yosemite's Valley Floor,