How many shades of gray can the unaided human eye detect?
A) 32
B) 320
C) 3,200
D) 32,000
A
Explanation: A) The human eye can detect only about 32 shades of gray. Digital radiographic systems claim the ability to produce up to 65,500 gray levels, but monitors can only display 256 gray levels.
B) The human eye can detect only about 32 shades of gray. Digital radiographic systems claim the ability to produce up to 65,500 gray levels, but monitors can only display 256 gray levels.
C) The human eye can detect only about 32 shades of gray. Digital radiographic systems claim the ability to produce up to 65,500 gray levels, but monitors can only display 256 gray levels.
D) The human eye can detect only about 32 shades of gray. Digital radiographic systems claim the ability to produce up to 65,500 gray levels, but monitors can only display 256 gray levels.
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