BIOD_171module3_exam
Attempt Time Score LATEST Attempt 1 35 minutes 75 out of 100 Score for this quiz: 75 out of 100 Submitted Apr 3 at 1:50am This attempt took 35 minutes. Question 1 5 / 5 pts A nanometer is defined as: A. 10-3 B. 10-6 C. 10-9 D. 10-12 B. Correct! C. D. A. Question 2 10 / 10 pts Resolution and contrast are two critical factors that influence your ability to see an object. Explain each. Your Answer: resolution refers to distance between two objects that both two objects can be seen seperatly. Contrast refers to difference in light absorbance between two area, the lower the contrast the harder the object can be seen Resolution refers to the distance between two objects at which the objects still can be seen as separate. Poor or low resolution means two (or more) objects may appear as one. Contrast is the difference in light absorbance between two objects. Poor contrast gives a high background and makes the visualization of multiple objects difficult. For instance, trying to identify 2 dark colored objects at night (low light = low contrast) versus the same 2 objects in the middle of a sunny afternoon (bright light against 2 dark objects = high contrast).
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