Discussion
Consider the following statements about diode array instruments.
1. They acquire the whole spectrum simultaneously.
2. They avoid drift occurring between successive wavelengths.
3. They always have better resolution than scanning instruments.
Answer: A
The first two are correct and are the advantages of the design. The third is not generally so, and resolution is often the compromise accepted. Simultaneity is the principal advantage. Drift between wavelengths is avoided entirely.
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