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.
Patriots tight end Rob Gronkowski attends a charity event in Louisville during Kentucky Derby weekend. (Photo by Robin Marchant/Getty Images). BOSTON (CBS) â Rob Gronkowski is trading in his party bus for a much faster ride â at least for one day. The Patriots tight end will drive the pace car and serve as a co-grand marshal with his brothers and father at Chicagoland Speedway for an Xfinity Series race on June 20th. Gronk is expecting a very special Fatherâs Day at the track. âIâm stoked to spend Fatherâs Day weekend with my family at Chicagoland Speedway.