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\nHow Do Mobile Phones Work?\n

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\nMicrowaves are not only used to heat food. Mobile phones utilise this type of electromagnetic radiation, allowing us to communicate over large distances. Physics - Waves - Learning Points. Mobile phones work by converting the sound into...\nMicrowaves are not only used to heat food. Mobile phones utilise this type of electromagnetic radiation, allowing us to communicate over large distances. Physics - Waves - Learning Points. Mobile phones work by converting the sound into electrical signals, which can be transmitted as microwaves. Microwaves have a lower frequency than infrared and visible light, but shorter wavelengths and higher frequencies than radio waves. As high frequency waves, microwaves can carry a lot of information - and their short wavelength means the transmitter, or mobile handsets, can be small. Base stations around the world help microwaves to travel further. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.\n
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Resource Details

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Curator Rating
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Educator Rating
Not yet Rated
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Media Length
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2:46
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Grade
6th - 12th
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Subjects
Science
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Media Type
Instructional Videos
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Source:
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\nImagine Learning - Twig (middle years+)\n\n
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Date
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2010
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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air, frequency, wavelength, radio waves, cells, sound, area, electromagnetic spectrum, visible light
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Additional Tags

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microwaves, mobile phone, invention, telephone, cable, electrical signals, converted, infrared, key advantages, transmitters small, carry information, base stations, urban areas, base station, shorter wavelength, electrical signal, information, cables, landline, microwave, problem, travel, receive, calls
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Classroom Considerations

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Best For: Explaining a topic
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