Question

How many data points can be analyzed in 20 seconds using grazing incidence interferometry?

(a) 35,000

(b) 45,000

(c) 55,000

(d) 65,000

I have been asked this question in an interview.

This is a very interesting question from Grazing Incident Technique to Evaluate Surface Flatness topic in section Machine Vision Systems of Engineering Metrology

Answer 1

Correct option is (d) 65,000

Easiest explanation: A laser-based system is developed to view part surface topography using grazing incidence interferometry. It is a microprocessor based system. It can analyze more than 65,000 data points and computer flatness in less than 20 seconds.