April 03

1888 - "Jack the Ripper": The first of 11 unsolved brutal murders of women committed in or near London.

• The entity known as "Redjac" later claims to have taken on this identity.

1981 - The Osborne 1, the first successful portable computer, is unveiled at the West Coast Computer Faire in San Francisco.
1995 - MicroLab 1 was launched by NASA, carrying meteorological experiment that tracked lightning, temperature and moisture profiles around the world.