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How are eyesight and light related?

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Anonymous

11y ago
Updated: 8/21/2019

Our eyes are our sense organ for detecting light. Their colour range is somewhat limited, being about one half of an octave.

When we say we 'see something', or 'are looking at something', in reality we are merely receiving light from that object.

We use separate sensors for brightness, and for colour. For colour we have three different colour sensors, which overlap in their bandwidth. Thus we perceive a broad range of colour. In dim light, our colour sensors are not active.

Your eyes are an extension of your brain (whose whole surface is light sensitive), and each eye sends part of its output to both hemispheres of the brain.

Many herbivores and carnivores have little use for colour, and waste no brain power on it. Some insects and butterflies can see a much wider range of colours that humans do.

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Wiki User

11y ago

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