Waves - Introduction - smart phone physics

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  • Created by: Mal
  • Created on: 19-03-14 12:00
Preview of Waves - Introduction - smart phone physics

First 43 words of the document:

Introduction
A mechanical wave
transfers (time varying)
Kinetic Energy without
a net transfer of
matter.
Mechanical waves
require a physical
medium through/on
which to propagate e.g.
sound/ocean waves

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Introduction
An electromagnetic
wave transfers Energy
between charged
particles.
Electromagnetic waves
can move through
physical media (e.g.
glass) but do not rely
on it, since even a
vacuum (space) has
magnetic and electric
properties.…read more

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Definitions
Learn and test your
recall of the following...…read more

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Transverse
Direction of wave
oscillation is
PERPENDICULAR to the
direction of wave
travel. e.g
electromagnetic waves,
S waves in
earthquakes, surface
ocean waves.…read more

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Longitudinal
Direction of wave
oscillation is PARALLEL
to the direction of wave
travel. e.g sound, P
waves in earthquakes.…read more

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Quick Clip
VIDEO
...…read more

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Wavefront
Wavefront ­ a line
joining all points on the
surface of a wave which
are IN PHASE (in step
with each other)…read more

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Wavelength
Wavelength ­ the
shortest distance
between two
wavefronts with
identical phase.…read more

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Period
Period T (s) ­ the
shortest time interval
between two
wavefronts with
identical phase.…read more

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Frequency
Frequency f (Hz) ­ the
number of oscillations
(or waves passing a
fixed point) every
second.…read more

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