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Giant Lens

A lens creates an image that hangs in midair.

A large hanging lens creates upside-down images of distant objects and right-side-up images of nearby objects. You can locate the upside-down images by using a piece of white paper as a screen. The right-side-up images are harder to find.

A large plastic page-magnifier Fresnel lens Light [...]

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Blind Spot

To see, or not to see

The eye’s retina receives and reacts to incoming light and sends signals to the brain, allowing you to see. There is, however, a part of the retina that doesn’t give you visual information. This is your eye’s blind spot.

One 3 X 5 inch (8 x 13 cm) card or [...]

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Science project idea on the relation of light to our ability to see things

Light and Ability to See- Science Project Idea
How objects are visible.Our common experiences prove to us without further experiment that light must be present in order to see objects.Recall ex- periences which prove this.It is easy to understand how an object which produces light is visible, but how are objects like books, chairs, etc., visible?When [...]

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Science project idea on the advantage of having two eyes

Advantage of Eyes Science Project Idea
Two Eyes Science Experiment
Close one eye and attempt to put the cap on a fountain pen held at arm’s length.With one eye still closed, attempt to put a pencil into a hole which it just fits.Try the same things with both eyes open.Hold a book several feet in front of [...]

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Science project idea on how a lens makes objects appear larger

Lenses Science Project Idea
How a lens makes objects appear larger.The action of a reading glass or a .simple lens is illustrated by the following figure.

It will be noticed that the rays of light come to the eye at the same angle as though they came from a much larger object, and the brain thus interprets [...]

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