Focal Length of Lenses

Essay specific features

 

Issue:

Science

 

Written by:

Rachel L

 

Date added:

December 19, 2014

 

Level:

University

 

Grade:

A

 

No of pages / words:

9 / 2469

 

Was viewed:

7952 times

 

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Essay content:

A simple lens is a piece of glassware that is spherical on one side and flat on another side, or spherical on both sides. There are two different types of lenses. A converging lens, also called a positive lens, and a diverging lens, also known as a negative lens. A converging lens thicker middle area than top and bottom, and the diverging lens has a skinnier mid-section...
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When a ray passes through the optical center, there will be no diffraction. The three basic rules about the rays are: 1) Rays travelling parallel to the lens will diffract towards the focal point 2) Rays travelling at optical centre will have no diffraction. 3) Rays travelling through the focal point towards the lens will have a parallel diffraction to the plane...
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