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There have two method to make periscope. First by using mirror, second by using prisms. Which method is batter? Why?
SMK Air Itam, Malaysia
It depends on what you want for the properties of the periscope.
Mirrors almost certainly will weigh less than the chunks of glass
needed for the prism solution. Prisms might be more durable and give
sharper images (for example, they won't warp when they heat up and cool
down, and they probably won't get dented when dropped, but perhaps
could break). Mirrors also may oxidize over time, while a prism will
last practically forever without changing.
(published on 10/22/2007)
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