Terry Moore: Why is 'x' the unknown?
TED.com
EducationHistory
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About
Why is 'x' the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer.
- Archive
- Internet Archive, in TED Talks
- Licence or status
- CC BY-NC-ND 3.0, as the Internet Archive states it.
- Credit
- TED.com
- Language
- English
- Who can watch
- The archive gives no rating. Invisible Network shows it to Tweens profiles and older, judged from its collection and subjects. How films are placed