Apply Orbital Science and Win at GPS World’s ION GNSS BoothScientists and engineers of the GNSS persuasion will want to test their knowledge of the two-body model and Keplerian orbits in a practical application at the roulette wheel in GPS World’s booth, #224–#226, at the ION GNSS+ Conference.Those successful in their predictions of the fall of the ball will mathematically increase their chances of winning a Go-Pro Hero video camera, a pair of tickets to the fabulous Leadership Dinner, or a bevy of $50 gift cards.Simply fill out a subscription form and receive five chips for play at the roulette table. Bet odd or even, red or black; bet your favorite number or take a split. If the ball falls into the 0, 00, or 25 slots, all bets on the table, winning or losing, are paid off with a handsome additional stake! This is the magazine’s way of celebrating its 25th anniversary.The more you win, the more raffle tickets you can put into the drawing bowl for the prizes. The prize drawing will be held during the afternoon break on Thursday, at approximately 3:40.According to a well-known GNSS expert and ION attendee, “From the point of view of satellite orbital mechanics, the high-speed spinning of a ball within the outer rim of a roulette wheel resembles the orbit of a satellite around a massive body. Friction between the wheel and the ball generates orbital decay that causes the ball to lose speed and, once a certain loss of energy occurs, fall from the rim into the center of the wheel. In the case of roulette, timing the period of motion of both the ball traveling around the rim and the wheel in the center combined with an orbital decay model allows a computer to predict the correct quandrant of the wheel that the ball will settle into as much as 40 percent of the time. Properly implemented, this is enough to create a tremendous advantage over the casino.”You too can turn your scientific knowledge to lucrative advantage!GPS World Booth #224–#226 is located at the rear of the hall, adjacent to the attendee lounge. The roulette wheel will be in operation during all exhibit floor hours, including the Wednesday evening reception.