Karteikarten
Ohne Titel
Karten in diesem Stapel (3)
- 1The 'low notes' have a low frequency and a long wavelength.The 'high notes' have a high frequency and a short wavelength.
- 2when i say "wave", you might think of a wave on the sea. it's obvious what's going on - the surface of the sea is vibrating up and down.With a sound wave, it's the air particles that are vibrating
- 3So they don't need air in order to travel. They don't need anything to be there at all.UHF stands for "Ultra High Frequency", and has wavelengths of less than a metre. It's used for Police radio communications, television transmissions and military aircraft radios - although military communications are now mostly digital.
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- Beschreibung
- GCSE physics Karteikarten am Ohne Titel, erstellt von MIRREN am 13/05/2014.
- Erstellt von
- MIRREN · Mai 2014
- Aktualisiert
- 19 Feb 2016
- Aufrufe
- 8
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