Communication - Vibration, Electronic Signals, and Electromagnetic Radiation
Enhancing our ability to communicate through technology
- Introduction - Communication (time required: 1-2 periods)
- Review Hearing and Speaking
- What is sound?
- Sound production
- How humans produce sound
- frequencies produced by humans and animals
- frequencies heard by humans and animals
Changing Voices to Electronic Signals
- electronic devices
- laboratory- cup and string walkie talkie
Sending an Electronic Signal Through the Air, Wire, Fiber Optics
- How does a microphone and a speaker work?
- Making a Pie Pan Speaker Demonstration
- Making a Speaker Laboratory
- Saving voices on magnetic tape
- demonstration - make our own magnetic tape and record on it
Using Electronic Signals To Talk To and Control Machines (time required
? - This section still needs to be developed)
- Electronic signal to electromagnetic radiation
- Electromagnetic radiation to electrical signals to sound
- Laboratory - Modulated Laser
- Binary codes
- Radio controlled toys demonstration
- We can send machines to work in dangerous environments.
- drones and remote submarines
- space probes and satellites
- satellite controls
- Extension of our senses with instruments
Demonstrations and Laboratories:
String Walkie Talkie Laboratory
Making a Pie Pan Speaker Demonstration
Making a Speaker Laboratory
Modulated Laser Laboratory
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