Lene Hau. Lene Vestergaard Hau (born November 13, 1959 in Vejle, Denmark) is a Danish physicist. In 1999, she led a Harvard University team who, by use of a Bose-Einstein condensate, succeeded in slowing a beam of light to about 17 metres per second, and, in 2001, was able to stop a beam completely.
Zeta is the sixth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 7. It was derived from the Phoenician letter zayin. Letters that arose from zeta include the Roman Z and Cyrillic Ð.
Consequently, Zeta Ceti itself is known as å¤©åå (TiÄn CÄng sÃ¬, English: the Second Star of Square Celestial Granary.) 1  van Leeuwen, F. (2007), Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 474 (2): 653â664, Bibcode:2007A&A...474..653V, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.