The mystery of 0.577 - Numberphile

The harmonic series and the elusive Euler–Mascheroni constant.
More links & stuff in full description below ↓↓↓

Featuring Dr Tony Padilla.
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Extra footage: https://youtu.be/eRGN8ThZfhU

Videos about -1/12: http://bit.ly/minus_twelfth

Tony at the LHC: https://youtu.be/sVYUqMRolaA (via Sixty Symbols, our physics channel)
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