Communicating with light or sound
People can send messages over a distance using patterns of light or sound, like blinking a light on and off, beating a drum in a rhythm, or tapping out a code such as Morse code. Engineers design and build tools and devices to do this, and compare different pattern-based methods to find which one sends information most reliably.
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Midterm
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This final covers a lot of topics, so it's split into 2 parts. Each part includes a question from every one of its topics.
Final, Part 1 of 2
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Final, Part 2 of 2
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