4388607
Beschreibung
Mindmap von Jack Willepotte, aktualisiert more than 1 year ago
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Erstellt von Jack Willepotte
vor mehr als 8 Jahre
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RADIO WAVES
- Long Radio waves
- They diffract and bend
allowing them to travel
extremely long distances
- They curve around the earth
- Also diffract around hills,
tunnels, houses and all sorts
- This bending and diffraction means signals can
be recieved even it the reciever is not in direct
sight of the transmitter.
- They curve around the earth
- They diffract and bend
allowing them to travel
extremely long distances
- Medium signals
- These can also diffract and reflect off the
ionosphere however only in certain
conditions and at different times of day.
- These can also diffract and reflect off the
ionosphere however only in certain
conditions and at different times of day.
- Short waves
- These cannot bend nor reflect or diffract.
- unless you are in direct sight of
the transmitter signals canot be
recieved.
- unless you are in direct sight of
the transmitter signals canot be
recieved.
- These cannot bend nor reflect or diffract.
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