Today is 16th June, 09 and here’s what happened today in tech…

1 – 1884 first roller coaster in the U.S. began operation at Coney Island, NY.

2 – 1909 1st U.S. airplane was sold commercially, by Glenn Curtiss for $5,000.

3 - 1949 Gas turbine-electric was locomotive demonstrated by Erie Pa.

4 – 1963 Valentina Tereshkova (U.S.S.R.) was the 1st woman in space, aboard Vostok 6.