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12 Cards in this Set
- Front
- Back
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Laws of reflection
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The incident, the reflected and the normal ray lie on the same plane. The angle of incidence equals the angle of reflection.
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Laws of refraction
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The incident, the refracted and the normal ray lie on the same plane. The sine of the angle of incidence is proportional to the sine of the angle of refraction.
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Refractive index
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Sin i divided by Sin r
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Critical angle .
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This is the angle of incidence in the denser medium that produces an angle of refraction in the less dense material of 90 degrees.
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Total internalreflection
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This occurs when the angle of incidence in the denser medium exceeds the critical angle.
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Dispersion
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This is the splitting of light into its component colours.
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Primary colours
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These 3 colours combine to form white light.
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Secondary colours
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This is a colour that combine with a primary colour to give white light.
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Complimentarycolours
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These are 2 colours that combine to give white light.
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A real image
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is formed by the actual intersection of light rays.
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An imaginary image
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is formed form the apparent intersection of light rays.
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The electromagnetic spectrum
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is an arrangement of electromagnetic waves in order of increasing frequency.
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