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NAVEDTRA 14182 Mod 10
Navy Electricity & Electronics
31
Other
Intermediate
02/24/2017

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Term
Propagation
Definition
Movement through a medium
Term
Wave
Definition
Disturbance (sound, light, radio waves) that move through a medium
Term
Wave Motion
Definition
recurring disturbance advancing through space with or without the used of a physical medium.
Term
Types of Waves
Definition
~ Transverse Waves
~ Longitudinal Waves
Term
[image]
Definition
Transverse Wave
Term
Transverse Wave Motion
Definition
90 degrees to the direction in which wave travels
Term
wavelength
Definition
distance from crest of one wave to the crest of next
Term
Amplitude
Definition
half the distance measured vertically from crest line to the trough.
Term
Longitudinal Waves
Definition
also called "Compression Waves" or "Sound Waves"
Term
Longitudinal Waves
Definition
~ travels back and forth in same direction as wave motion
~compresses/decompresses transmission medium
Term
Medium
Definition
vehicle through which wave travels from one point to the next
(ex: air, water, the ground))
Term
Requirement for Longitudinal & Transverse Wave Propagation
Definition
~Source
~Medium
~Detector or Receiver
Term
Wave Motion Terms
Definition
~Cycle
~Wavelength
~Amplitude
~Frequency
~Reference Line
Term
Cycle
Definition
combo of one complete positive and one complete negative alternation represents one cycle of the wave.
Term
Top/Crest
Definition
the peak of the wave
Term
Bottom/Trough
Definition
The valley of the wave
Term
Wavelength
Definition
distance in space occupied by one cycle wave at any given instant
Term
Wavelength
Definition
measured from the distance leading edge of one cycle to the corresponding point on the next cycle.
Term
Amplitude
Definition
height of a wave crest above the reference line called "the amplitude of a wave".
Term
Amplitude of Waves
Definition
gives a relative indication of the amount of energy the wave transmits
Term
Frequency
Definition
# of vibrations or cycles of a wavetrain in a unit of time

~measured in hertz
Term
Velocity
Definition
rate which disturbance travels through the medium,or velocity which the crest of the moves along
Term
Reflection
Definition
~neither transmitted nor absorbed
~reflect from surface of medium encountered
Term
Incident wave (reflection)
Definition
wave directed toward the surface of the mirror
Term
Reflected wave
Definition
wave bounces off the mirror
Term
Angle of Incidence
Definition
angle between the incident and the normal angle
Term
Angle of Reflection
Definition
angle between the reflected wave and the normal
Term
T/F The angle of incidence is equal to the angle of reflection
Definition
TRUE
Term
Refraction
Definition
wave passes from one medium into another medium that has a different velocity of propagation, a change in direction.
Term
Refraction
Definition
change of direction as wave enters the second medium
Term
Angle of Refraction
Definition
angle between the normal and the path of the wave through the second medium
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