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Sight sense - Contenido educativo
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Well, the human eye works no less than a digital camera.
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The fact that you are seeing so many things has a process.
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And I'll tell you what actually happens inside your eyes.
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This is the cornea.
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The cornea is the clear front surface of the eye.
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You know, it actually acts like a camera lens.
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You could say that this is the window that allows the light to get in.
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Next comes the iris, which is a thin circular structure in the eye.
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This works like a camera shutter, deciding what should be the amount of light that enters the eye.
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It passes the light rays to the back of the eye called the pupil.
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which appears as a black hole at the centre of the iris.
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It is the opening through which light enters the eye.
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Depending on the amount of light, the iris stretches and contracts the pupil.
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Just how the aperture of a camera works.
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Then comes the lens of the eye, which is just behind the pupil.
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Okay, do this experiment.
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Close one eye and bring a pencil close to the eye which is open.
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Make sure you can see it clearly.
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Now, bring the pencil close to your eye.
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Bring it closer, closer, that's right.
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Now, does it become blurry?
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Well, this is the job of the lens of your eye.
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It focuses and de-focuses, depending on how far the object is from your eye.
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Now, the light reaches the retina.
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This acts as an image sensor of a digital camera.
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Well, in simpler words, it converts the light that you take in, into electronic signals.
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Then, the optic nerve of the eye transmits those electronic signals to the brain..
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..which lets you finally see an object.
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- Subido por:
- Teresa G.
- Licencia:
- Reconocimiento - No comercial
- Visualizaciones:
- 53
- Fecha:
- 17 de noviembre de 2022 - 20:25
- Visibilidad:
- Público
- Centro:
- CP INF-PRI PIO BAROJA
- Duración:
- 02′ 27″
- Relación de aspecto:
- 1.78:1
- Resolución:
- 1920x1080 píxeles
- Tamaño:
- 331.85 MBytes