On this day:

1960 Theodore Maiman fires the first functional laser

1975 Sikkim becomes a part of India

1975 Junko Tabei becomes the first woman to conquer Mount Everest

2003 Calcutta high court rules Calcutta does not have a birthday and that British East India employee Job Charnock is not the city’s founder as previously claimed

Born on this day:

1831 David Edward Hughes, Welsh/American scientist, co-invented the microphone