The Cosmological and Fine-Structure Constants

Physicist David Goodstein, and astrophysicists Neil deGrasse Tyson and Roger Blandford briefly discuss the renewed interest in Einstein's cosmological constant, as well as recent evidence that the fine-structure constant might actually be changing.

http://en.wikipedia.org/wiki/Cosmological_constant
http://en.wikipedia.org/wiki/Fine-structure_constant

The complete video of this discussion can be viewed here:
http://www.researchchannel.org/prog/displayevent.aspx?rID=3807&fID=1688

Видео The Cosmological and Fine-Structure Constants канала LennyBound