Fibre optic: light in glass
Computer Studies · Grade 10 · about 40 minutes
Total internal reflection, why fibre ignores electrical noise, and how undersea and inland fibre shape Kenya’s internet.
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Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.
- 8 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- How data is transmitted, and guided media
- Wireless media, choosing a medium, and connecting devices
- Encoding and decoding a signal
- Modulation, demodulation and the modem
- Multiplexing: sharing one expensive medium
- Twisted pair and coaxial in practice
- Fibre optic: light in glass
- Factors, choice and connecting devices in Kenya