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Lesson Objectives Explain how light travels Explain how we see objects Know how shadows are formed.

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Presentation on theme: "Lesson Objectives Explain how light travels Explain how we see objects Know how shadows are formed."— Presentation transcript:

1 Lesson Objectives Explain how light travels Explain how we see objects Know how shadows are formed

2 Light Travels from a light source into our eyes or Light travels to our eyes after being reflected off an opaque object.

3 Can you spot the mistake?

4 The eye

5 Cornea – protects the pupil Iris – controls the size of the pupil Lens – bends rays of light to form a clear image Pupil – lets light into the eye Retina – where the image is formed Optic nerve – sends messages to the brain

6

7 Molecular Expressions Microscopy Primer: Light and Color - Human Vision: Interactive Java Tutorial

8 THE EYE The pupil allows light to enter the eye. The lens helps to focus the light Light sensitive cells in the retina detect the light. A nerve impulse travels from the retina to the brain along the optic nerve where it is interpreted. The iris helps to change the size of the pupil

9

10 Are two eyes better than one? Vs.


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