Microworlds Review

Light

Concave Lens

Concave lens make object appear to be smaller

Convex Lens

Convex lens make objects appear to be larger (magnify)

Glasses

• Convex lens correct farsightedness

• Farsighted people can’t see objects that are nearby

• Concave lens are used to correct nearsightedness

• Nearsighted people can’t see object that are far away

Laser light

Rainbow of Colors

Why is light important?

Your eyes Eyeglasses and contact lenses

Lenses for TV, movie, and photographic cameras Photocopiers and fax machines

Binoculars and telescopes Microscopes and magnifiers

Projectors (overhead, movie, slide, TV) CD players

Supermarket product code laser scanners Weather and spy satellites

Medical systems (to look inside the body) Solar energy systems

...and many more

But perhaps most importantly….

• Plants convert light energy into chemical energy during photosynthesis

• And without plants where would we be????