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# Waves

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on 18 January 2018

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#### Transcript of Waves

Waves
Periodic Motion
What is a Wave?
Classification of Waves I
Characteristics of Waves
superposition of waves

A wave is a disturbance or oscillation that travels through space. It is accompanied by a transfer of Energy.
Do they need a medium to propagate?
Not at
all!
Yes
Mechanical
Waves
Electromagnetic
Waves
Classification of Waves II
How do they propagate?
Perpendicular
to disturbance
Parallel
to disturbance
Transverse
Waves
Longitudinal
Waves
Amplitude
Wavelength ( )
Frequency (f)
Period (T)
Speed

Bibliography

Bennet, C. College Physics. B&N College
Outline Series. 6th ed. New York, 1968.

Urone P. P., et. al. College Physics. Openstax. 2012.
Thank you.
Wave Interference
Ocurrs when two
or more waves
arrive at the same
point.

Constructive Interference
If two Waves have the same frequency, and if
Waves arrive in phase (crests are aligned), they will constructively interfere.

Wave Interference
Destructive Interference
If two waves have the same frequency, and if they arrive out of phase (crests aligned with valleys), they will destructively interfere.
Real Sound Signal
Conclusions
Waves are everywhere!
They are disturbances that propagate through space.
Waves carry energy.
Mechanical waves require a medium to propagate. Electromagnetic ones do not.
Waves may also be classified as Transverse or Longitudinal.
Maximum displacement from equilibrium.
Distance between any successive identical parts of the wave (SI Unit: meter).
Specifies the number of oscillations/cycles that are completed every second (SI Unit: Hertz)
The time it takes te system to complete ONE oscillation/cycle (SI unit: second).
speed = (frequency)(wavelength)
The Doppler Effect
Full transcript