A periodontist is a dentist who specializes in the prevention, diagnosis, and treatment of periodontal disease, and in the placement of dental implants. Periodontists are also experts in the treatment of oral inflammation.
Ground speed. Ground speed is the horizontal speed of an aircraft relative to the ground. An aircraft heading vertically would have a ground speed of zero. Information displayed to passengers through the entertainment system often gives the aircraft ground speed rather than airspeed.
On June 21, 2013 in Los Angeles against the Angels, Pirates rookie pitcher Gerrit Cole threw eight pitches reaching at least 100 mph. His 101 mph fastball to Alberto Callaspo, according to ESPN, was the fastest pitch since 2008 by a major-league starter not named Justin Verlander.On Sept. 17, 2013, fellow rookie pitcher Yordano Ventura hit 101.9 mph for Kansas City against Cleveland.ast season, the average fastball reached 92.0 mph. In 2003, Houston reliever Billy Wagner was the only pitcher to throw at least 25 pitches at 100 mph or faster, according to Baseball Info Solutions.