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LOW FREQUENCY
LONG WAVE LENGHT
R
M
I
V
U
X R. RUDE
G M. MONKEYS
I. INVENT
V. VERY
U. UNDERSTANDING
X. X-RATED
HIGH FREQUENCY G. GAMES
SHORT WAVE LENGHT…read more

Slide 3

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ELECTRO MAGNETIC RADIATION CAN BE
or
different wavelenghts of electro magnetic radiation are
reflected refracted absorbed or transmitted differently by
different substances and types of surface eg;
Black surfaces are
particularly good absorbers
of infa red radiation…read more

Slide 4

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When a wave is by a substance the engery it carries is
absorbed and makes the substance
It may also create an
Of the same frequency as the radiation.
This principle
Is used in television and radio aerials which receive information via radio waves…read more

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WAVE SPEED =
M/S
Hz
X
M…read more

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COMMUNICATION USING
ELECTROMAGNETIC WAVEZZZ
Sound can be sent over long distances if it is converted into electrical signals which match the frequency and
amplitude of the sound waves
These signals can be sent
A radio wave
using called a
or
Is used to carry the electical signal from
the transmitter,
this produces a
Ill explain....…read more

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