1947 – The first closed-circuit broadcast of a surgical operation showed procedures to observers in classrooms at Johns Hopkins University.
1954 – The Westinghouse H840CK15 went on sale in the New York area. It is generally agreed to be the first production television receiver using NTSC color offered to the public. Only 30 sets were sold at $1,295 a pop.
Westinghouse display ad, New York Times, Feb. 28, 1954, p. 57
1959 – Discoverer 1 was launched on a Thor-Agena A rocket and became the first man-made object ever put into a polar orbit.
2017 – A typo in a command to take some servers offline for maintenance caused an outage in Amazon’s S3 service that took millions of websites offline.
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