| Images: Lenses |
|
|
|
|
|
|
|
|
|
|
|
|
| • | Many
students at the university level do not |
||||||||||
| understand
basic issues with lenses. If a lens is |
|||||||||||
| positioned
to create a real image of a bulb on a |
|||||||||||
| screen
they think: |
|||||||||||
| – | removing
the lens will make the image right-side up |
||||||||||
| (~45%
post instruction) |
|||||||||||
| – | the
image does not lie on the screen |
||||||||||
| (~75%
post instruction) |
|||||||||||
| – | covering
half a lens will block half of the real image |
||||||||||
| it
creates (~75% post instruction) |
|||||||||||
