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August 13, 2009

Alvin and the chipmunks?

devadutta @ 8:46 pm, GMT +0000 ( 1250196379 ) Play

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Pierre_JanssenHelium_spectrum

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Cracked by: duriel , Rohan , udupendra , shrik , Dibyo , Debasish , dheeraj , Rogi , AmK , Logik , Raghuvansh , varuns88.

Answer:

Quoting shrik

1. Pierre Janssen
2. The clear yellow line is at 587.49nm in the spectrum
3. Guntur :p

Janssen noticed this wavelength while watching a total solar ecipse in Guntur, which led him to discover Helium.

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