Lecture20

# Lecture20 - Chapter 16 Waves PHYS 2101 P.M.Shikhaliev LSU...

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Chapter 16 Waves 1 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010

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16.2. Types of Waves 1. Mechanical waves. These waves have two central features: They are governed by Newton’s laws, and they can exist only within a material medium, such as water, air, and rock. Common examples include water waves, sound waves, and seismic waves. 2. Electromagnetic waves. waves. These waves require no material medium to exist. All electromagnetic waves travel through a vacuum at the same exact speed c= 299,792,458 m/s. C ommon examples include visible and ultraviolet light, radio and television waves, microwaves, x rays, and radar. 3. Matter waves. These waves are associated with electrons, protons, and other fundamental particles, and even atoms and molecules. These waves are also called matter waves. 2 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010
longitudinal wave the motion of the oscillating particles is parallel to the direction of the wave’s travel. 16.3. Transverse and Longitudinal Waves In a transverse wave , the displacement of every such oscillating element along the wave is perpendicular to the direction of travel of the wave. 3

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Lecture20 - Chapter 16 Waves PHYS 2101 P.M.Shikhaliev LSU...

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