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All about lenses visit compiled by Mr G July 2008.

Published byLaurel Nash Modified over 9 years ago

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Presentation on theme: "All about lenses visit compiled by Mr G July 2008."— Presentation transcript:

1 All about lenses visit http://goes.flexinet.com.au/default.htm compiled by Mr G July 2008

2 http://www.heussneroptics.com/Convex%20Lenses%20- %20Icon.jpg Describe the shape of typical convex lenses

3 How are convex lenses used? http://i.pbase.com/u40/tkt/large/40599248.LighthouseLamp.jpg http://images.asia.ru/img/alibaba/photo/51637706/Microscope.jpg

4 http://farm1.static.flickr.com/14/19726818_0e768be01d.jpg? v=0 How are convex lenses used?

5 Typical convex lens diagrams

6 COPY THIS

7 Find the focal length of these lenses?, MOVE THE RULER

8 Copy these 3 eyes down the LHS edge of your page Find a ruler and then complete this picture ?????

9 Typical convex lens diagrams

10 How do they work? imagine that you can chunk the convex lens into 3 sections like this...

11 How do they work? rotate the prism just a bit....

12 How do they work?

13

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