Communications: Transmitting and Receiving Signals
This booklet is part of the ‘Innovations in Practical Work’ series published by the Gatsby Science Enhancement Programme (SEP). It is based on two specially developed resources produced by SEP: the Optical Signal Transmission Set and the Analogue/Digital Transmission Set. The first of these uses visible light to demonstrate some basic principles of sending signals using electromagnetic radiation. The second set uses infrared radiation to demonstrate how carrier waves can be used for analogue and digital signals. Both sets can be used to model the way that radio waves are used to transmit information about audio signals.
The Communications booklet contains an illustrated overview of the topic with suggestions for teachers on how to introduce the ideas in the classroom, plus student activity sheets and notes for teachers and technicians.
The downloadable resources include:
• Student activities: zip files containing the activity sheets in PDF and editable Word formats.
• PowerPoint presentations: these contain a complete set of the images used in the booklet and activity sheets.
• Further resources include sample sound files and guidance on using sound analysis software.
The ‘Innovations in Practical Work’ publications are supported by low-cost practical resources available from Mindsets:
* SEP publications and resources from Mindsets
* Practical resources for Communication
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