Watch this talk as High-res video (MP4)
Discuss this talk: Lightning calculation and other "Mathemagic" ( Arthur Benjamin )
About this talk
In a lively show, mathemagician Arthur Benjamin races a team of calculators to figure out 3-digit squares, solves another massive mental equation and guesses a few birthdays. How does he do it? He’ll tell you.
About Arthur Benjamin
Mathematician and magician Arthur Benjamin combines his two passions in "Mathemagics," a mind-boggling presentation of lightning calculations and other feats of mathematical agility. Full bio and more links
What to watch next
-

-
Al Seckel says our brains are mis-wired
14:33 Posted: Apr 2007
Subscribe to TED
New talks are released daily. Be the first to know!
- Video RSS:
-
Additional RSS Options
Related themes
Related tags
We want to share our Talks! Just follow the guidelines outlined under our Creative Commons license.







