The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter. A lens typically has a set of marked "f-stops" that the f-number can be set to. A lower f-number denotes a greater aperture opening which allows more light to reach the film or image sensor.
Answer:
Do we answer it?? What is the following?
Explanation:
Bicycle patrols result in more than twice as many contacts with the public than vehicle patrols (Menton, 2007)
The group that measures precisely and all three times.