The Images Formed in Converging and Diverging Lenses

Converging Lens

Diverging Lens

 

Aqua

 

The blue and the green rays converge creating a beautiful aqua!

Nearsightedness and how corrective lenses fix this problem

I, like many people, struggle with being nearsighted. It is very frustrating to be unable to see things without the help of corrective lenses. I have always wondered the science behind why my eyes don’t work properly, and exactly how corrective lenses fix this problem. To focus on distant objects, the eye flattens and has a shorter focal length. When a person is nearsighted, they lack the ability to do this, and a blurry image is formed in front of the retina. It is fixed by using a diverging lens, which will diverge light before it reaches the eye; this results in a clear image being formed on the retina. Life as we know would not be possible without this real-life application of Physics.

(Kaitlyn, Source)

Optical Bench. Focal Length of a Lens.

Graph by Hannah and Rex

 

Graph by Diana and Rosa                 Graph by Cristian and Leandro

Optical Bench. Finding the Focal Length of a Lens.

Graph by Rebecca

Graph by Shanice and Bernice

Graph by Yonatan

Image distance vs. object distance, f = 10 cm (experiment)

 

(By Zuzan and Tim)

Image distance vs. object distance, f = 10 cm

Data collected by Zuzan and Tim

Link to the graph

x = 10        y = 10        1/x + 1/y = 1/10

Link to the graph

Image distance vs. object distance; f = 25 cm (experiment)

 

(by Melissa and Naomi)

Image distance vs. object distance; f = 25 cm

Data collected by Melissa and Naomi

Link to this graph

1/x + 1/y = 1/25        x = 25        y = 25

Link to the graph

Converging and Diverging Lens

 

Converging Lens                                       Diverging Lens

The most interesting interpretations of an image construction diagram

One needs just two rays to find an image of an object formed by a diverging lens.  Below, there are the most interesting interpretations of constructing the diagram. I admire creativity expressed in these works.