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.
(astrology) Also called the Scorpion. 1  the eighth sign of the zodiac, symbol â, having a fixed water classification and ruled by the planet Mars and the dwarf planet Pluto. The sun is in this sign between about Oct 23 and Nov 21. 2  a person born during a period when the sun is in this sign.