is the Focal Point?
point is the point where the converging rays of light passing
through a lens meet before they begin to disperse outwards again
to where the the focal plane or film lie. As the rays of light pass
this point they cross over an the image is projected upside down
and back to front onto the film.
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focal point is a similar point to where the sun's rays can
be focused with a magnifying glass to heat paper and even
start a fire
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