Today in Tech History – – April 29, 2018

1882 – Ernst Werner von Siemens presented his “trackless trolley” called the “Elektromote” in a Berlin suburb. The system pulled electricity from overhead wires, but used road wheels instead of tracks.

http://www.siemens.com/history/en/innovations/transportation.htm#toc-2

1953 – KECA-TV, an ABC affiliate in Los Angeles, California, broadcast the first US experimental 3D-TV. An episode of Space Patrol required specially polarized glasses to watch.

http://www.edn.com/electronics-blogs/edn-moments/4412950/1st-US-3D-TV-program-is-broadcast–April-29–1953

2005 – Apple released Mac OS X 10.4 Tiger, introducing spotlight search and dashboard functionality.

http://www.apple.com/pr/library/2005/04/28Apple-Unleashes-Tiger-Friday-at-6-00-p-m.html

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