2007-03-23 04:14:38 · 3 answers · asked by eliiiiii 1 in Science & Mathematics ➔ Physics
The focal length is primarily determined by the curvature of the lens on both sides. Also the refractive index of the lens material vs the refractive index of the material the lens is in (IE air, water) has an effect on the lens' focal length.
2007-03-23 04:25:26 · answer #1 · answered by Controlfreak38 6 · 0⤊ 0⤋
The good auld lens makers' formula will help you see what matters in a lens.
It's primarily the refractive index of the lens material, the radius (or radii) of curvature, and finally the thickness of the lens.
2007-03-23 11:24:46 · answer #2 · answered by dudara 4 · 0⤊ 0⤋
the radius of curvature (both sides), and the refractive index of the material (or materials for multi-element lenses) used in the lens.
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2007-03-23 11:19:18 · answer #3 · answered by tlbs101 7 · 0⤊ 0⤋