The Human Eye and the Colourful World · Science, chapter 10
Read the section map, ask questions about this chapter, run the concept animations, then take a quiz and see which sections to go back to.
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Sections of this chapter
Every anchor here is a citation target: a chip in an answer links straight to #section-<no>.
- §10.1THE HUMAN EYE — book page 1
- §10.1.1Power of Accommodation — book page 2
- §10.2DEFECTS OF VISION AND THEIR CORRECTION — book page 2
- §10.3REFRACTION OF LIGHT THROUGH A PRISM — book page 5
- §10.4DISPERSION OF WHITE LIGHT BY A GLASS PRISM — book page 6
- §10.5ATMOSPHERIC REFRACTION — book page 8
- §10.6SCATTERING OF LIGHT — book page 9
- §10.6.1Tyndall Effect — book page 9
- §10.6.2Why is the colour of the clear Sky Blue? — book page 9
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Concept animations for this chapter
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The human eye: accommodation, myopia and hypermetropia
conceptId: human-eye
What to notice: with no spectacles, an object at 0.50 m needs 42.0 D and the eye supplies 42.0 D, so the image lands 25.0 mm behind the lens — on the 25.0 mm retina, giving a 0.00 mm blur spot.
Try this: press myopic eye and watch the image cross in front of the retina, then tick wear spectacles — the computed power is +0.00 D and the far point moves to ∞. Model note: a thin-lens model with the spectacle lens treated as in contact with the eye lens; lens thickness, aberrations and the eye’s actual accommodation mechanism are not modelled, and the object is drawn at a schematic distance although every number is computed from the real distances.
computed — needed: 42.00 D, used: 42.00 D, image: 25.00 mm, retina: 25.00 mm, blur: 0.000 mm, far point: ∞, near point: 0.25 m, spectacle power: 0.00 D, verdict: sharp
10 further animations in the registries belong to other chapters.
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