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light (Images (larger than object = magnified, smaller than object =…
light
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Dispersion:
Splitting of white light into the colours of the visible spectrum
All colours of light travel at same speed in air but different in glass
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ray diagram rules
- ray parallel to the principal axis = refracted through focus
- ray to the centre doesn't change direction
- ray through focus = refracted parallel to axis
law of reflection:
angle of incidence (i) = angle of reflection(r)
ray of light travelling inwards = incident ray
ray of light travelling outwards = reflected ray
angle between normal + refracted ray = angle of refraction
angle between normal + emergent ray = angle of emergence
Refraction:
refraction of light is the change in the direction of a beam of light as it travels from one material to another
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