ED-209: On This Day (March 22): Difference between revisions

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[[File:ED-209 - Butler Act (21 March 1925).jpg|thumb|'''ED-209''' announces]]
[[File:ED-209 - Laser patent - 22 March 1960.jpg|thumb|'''ED-209''' announces the first patent for a laser.]]
On This Day in History: '''22 March 1960''':
On This Day in History: '''22 March 1960''':


Revision as of 14:22, 22 March 2023

ED-209 announces the first patent for a laser.

On This Day in History: 22 March 1960:

Arthur Leonard Schawlow and Charles Hard Townes receive the first patent for a laser.

That is all.

See ED-209: On This Day in History.

In the News

  • "21 March 1925: The Butler Act prohibits the teaching of human evolution in Tennessee. That is all." —ED-209

    "21 March 1925: The Butler Act prohibits the teaching of human evolution in Tennessee. That is all." —ED-209

Fiction cross-reference

Nonfiction cross-reference

External links

Social media

  • Post @ Twitter (21 March 2023)
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