Event:
Wind speed reaches 450 kph in tornado, Wichita Falls, Texas (record)
More Notable Events on April 2:
1982 Argentina seizes Malvinas, also known as the Falkland Islands
1978 Velcro was 1st put on the market
1935 Sir Watson-Watt patents RADAR
1921 Albert Einstein lectures in New York City on his new theory of relativity
1877 1st Easter egg roll held on White House lawn
