1. SIMPLE MAGNIFIER
Ta-06 Guerrero
Ta-13 Pancho
Ta-28 Ravalo

2. • Composed of a single converging lens
• Used to see a larger image of an object for the
eye to see.

3. The Human Eye
• Has a variable focal length
• Muscles in the Eye can relax for viewing from
a distance or tighten for close-up viewing
• 25 cm – closest distance at which the eye can
focus without much strain

4. Angular Magnification
• “the ratio of the angle subtended by the
image when using the magnifier to the angle
subtended by the object when viewed from
25 cm by the “unaided eye”
• M=θ/θ0

5. Example: Magnifying Glass
• Convex lens used to produce a magnified
image of an object
• Usually mounted on a frame with a handle

6. Sources
• http://www.physics.pomona.edu/sixideas/opt
ics/gopt5.pdf
• http://en.wikipedia.org/wiki/Magnifying_glass
• http://justglasssite.com/tag/magnifying-glass-
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