n1 sin Î¸1 = n2 sin Î¸2. This form of Snell's law was actually published by RenÃ© Descartes (1596â1650) France in La Dioptrique (1637). Snell did discover the relationship but articulated it in a different way. Today it is the form used by Descartes that is called Snell's law.. The index of refraction.
Robert Paxton Rob Gronkowski (born May 14, 1989), nicknamed  Gronk , is an American football tight end for the New England Patriots of the National Football League (NFL). He played college football at Arizona and was drafted by the Patriots with the 42nd pick in the second round of the 2010 NFL Draft.
Rob Gronkowski celebrated birthday in Las Vegas (Videos) New England Patriots tight end Rob Gronkowski will turn 26 on Thursday, and he celebrated the only way he knows how over the weekend â Las Vegas style. Gronk hosted a party at Rehab, the Hard Rock Hotelâs famous pool bash. He was presented with multiple birthday cakes and busted out plenty of his token dance moves.