The human visual resolution is 1 minute of arc. Assuming that you are looking down an isolated road at night.
a. at what distance can you distinguish the two headlights of an approaching car?
A one-inch telescope can resolve two points of light 4.5 arc seconds apart.
b. At what distance can you distinguish the two headlights of an approaching car?
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The length of an arc S on a ...
The solution provides detailed answers to 2 questions regarding human visual resolution.