Answers

2014-08-30T08:33:07+08:00
1.to provide a stable platform, so that the eye can easily stay  focused on the object
2.to exclude external light sources. 
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2014-08-31T17:41:04+08:00
1. To provide a stable platform, so that the eye can more easily stay focused on the object.
2. To exclude external light sources.

this is where the scientist/s are looking while doing some experiments.
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