3.3.19

The Eye as a Pinhole Camera

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The Eye as a Pinhole Camera

The human eye is often compared to that of a pinhole camera.

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Pinhole cameras

  • The pinhole camera is a simple camera without a lens.
  • The pinhole is small to allow the image to be as focused as possible.
  • The first pinhole cameras were used in 500 BC.
  • Images are formed on photosensitive paper at the back of the camera.
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Comparison to the eye

  • The eye is often compared to the pin hole camera because:
    • Light enters the pin hole as light enters the pupil.
    • An image forms on the screen like an image will form on the retina.
    • The image will also be upside down.
    • Both images are ‘real’ images.

Jump to other topics

1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

2.7Energetics

2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Thinking Scientifically

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