According to Helmholtz's Analysis of the Eye,the Sharpness of Focus

question 14

Multiple Choice

According to Helmholtz's analysis of the eye,the sharpness of focus within the visual field is

• A) impressively acute only in a very small region near the center.
• B) about the same quality as that produced by a good camera lens.
• C) impressive evidence of the optical perfection of the eye.
• D) uniform throughout the entire field.

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Definitions:

Bipedalism

The ability to walk upright on two legs, characteristic of humans and their ancestors.

Ultraviolet Sun Radiation

A type of electromagnetic radiation emitted by the sun that has shorter wavelengths than visible light, can cause skin damage, and is instrumental in the production of vitamin D in the skin.

Free Hands

The freedom or capacity to act or operate without constraint or interference.

Visual Acuity

The clarity of vision or the sharpness of eyesight, measured as the ability to discern letters or numbers at a standardized distance.