Area 10
Optics
Rays of light, mirrors and lenses
Optics na about light: how e dey travel for straight line, how e dey bounce from mirror, and how e dey bend wen e enter glass or water. Lenses and mirrors dey use dis rules to form images for cameras, glasses and telescopes.
Who e good for
Pikin wey like puzzles wit angles and shadows, and anybody wey dey curious about glasses, cameras and rainbows.
Wetin you go learn
- How light dey travel as rays and dey cast shadows
- How mirror dey reflect light: di angle wey enter equal di angle wey comot
- Why light dey bend (refraction) wen e enter glass or water
- How lenses dey gather or spread light and form images
Example experiments
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Point one light ray for mirror and measure di angles before and after e bounce.
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Shine one ray enter glass block and watch how im direction dey change.
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Move one lens along optical bench and find wia di image go sharp.
Tins wey you fit build
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Periscope wey get two mirrors
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Set-up for magnifying glass
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Model camera wit lens and screen
Dis examples dey show di kind work wey dey dis area. Di lessons wey dem go publish fit different.
Wetin di simulation simplify
- Dem dey treat light mainly as rays (ray optics); wave effects like interference and diffraction pass wetin dis lessons cover.
- Lenses and mirrors na ideal shapes; real lenses get flaws and fit blur colours.
Every simulation dey simplify reality. To sabi how e dey do am na part of learning engineering.
How e connect to school subjects
Physics (light), maths (angles and geometry), biology (di eye), art and photography
Connection to oda areas
Optics dey link to electrical circuits (light sources and sensors), to structures and materials (glass and transparency) and to robotics (cameras and light sensors).
E good make you know
Your eye get lens too: e dey focus light for di back of di eye, just like how camera lens dey focus light for im sensor.