How does it look now? Back up a
little or peer in from the top. It should look like it is broken and
bent at a funny angle. This is the effect of refraction or
bending of light.
We use this idea to make lenses
- shaped pieces of glass that bend light in a special way.
Lenses are used in telescopes to make
things far away appear to be closer. They are also used in microscopes to make small things appear
to be larger.