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How do we
view objects through the glass bead?
Since the bead
is so small, it needs to be put inside some sort of housing. On the
island, we used a saucepan and a wooden base. A mirror was used
to shine light onto the sample to illuminate it.
Since the sphere
can only focus at a short distance, the objects we examined had to
be thin. We put the samples — such as onion cells or human hair
— onto a piece of glass and held them in position with a couple
of drops of water. We used water and a cover slip and put the sample
under the lens so that it was almost touching.
We incorporated
an adjustment mechanism to focus the microscope.
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