Why Must a Specimen That Is to Be Viewed in the SEM

question 6

Multiple Choice

Why must a specimen that is to be viewed in the SEM have no water in it?

• A)Water causes the specimen to swell.
• B)Water distorts the image.
• C)The specimen will be observed in a vacuum,which will cause the water to freeze.
• D)The specimen will be observed in a vacuum,which will cause the water to evaporate rapidly and damage the specimen,altering its surface structure.
• E)Water attracts electrons.

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Definitions:

Standard Deviation

A statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.

Paired T-test

A statistical test used to compare the means of two related groups to determine if there is a significant difference between them.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true; a measure of the risk of a Type I error.

Weight Reduction

The process or strategy of reducing overall body weight, typically through diet, exercise, or a combination of methodologies.