Skip to main content

  | मौसम…

411 समाचार
Public archive edition · Attributed source reporting with original dates · AI drafts are excluded

411 REFERENCE · Wikibooks

Free Knowledge Culture Calendar/December 16

Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.

frameless|right Today in 1947 the first working transistor was made at AT&T's Bell Labs in New Jersey. The first to see it were some colleagues who were given an internal demontration a few weeks later, and at the end of June next year it was presented to the public. December 15 December 17