The wave shown above can be described by a variety of properties. One such property is amplitude. The amplitude of a wave refers to the maximum amount of displacement of a particle on the medium from its rest position. In a sense, the amplitude is the distance from rest to crest. Similarly, the amplitude can be measured from the rest position to the trough position.
1 ISIS leader Abu Bakr al-Baghdadi may have been wounded in an airstrike. 2  Even if he gets killed, a throng of very professional leaders could take his place. 3  Al-Baghdadi has two top deputies, one over operations in Iraq and one over Syria. 4  The Shura Council, ISIS' religious monitor, could tell al-Baghdadi to go.
Death of Osama bin Laden. Osama bin Laden, the founder and head of the Islamist group Al-Qaeda, was killed in Pakistan on May 2, 2011, shortly after 1:00 am PKT (20:00 UTC, May 1) by United States Navy SEALs of the U.S. Naval Special Warfare Development Group (also known as DEVGRU or SEAL Team Six).