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.
Summer temperatures can get hot at Yosemite Valley. Normally all but a couple of days in summer heat up to at least 80 Fahrenheit, with about half making it to 90 degrees or more. Every couple of years, a day in July or August will reach 100 Â°F (38 Â°C). Days per month in Yosemite of at least 70, 80 or 90 Â°F. 70 Â°F.