Small Objects and Maps
Observing a nearby small object without a magnifying glass or a microscope, the optimal distance is 20–25 cm. At this close range, 0.05 mm can be seen clearly. The accuracy of a measurement ranges from 0.1 to 0.3 mm and depends on the experience of the observer. The latter figure is the usual positional accuracy of faint details in maps and technical plans.
Read more about this topic: Naked Eye
Famous quotes containing the words small, objects and/or maps:
“They shall yet belie thy happy years
That say thou art a man. Diana’s lip
Is not more smooth and rubious; thy small pipe
Is as the maiden’s organ, shrill and sound,
And all is semblative a woman’s part.”
—William Shakespeare (1564–1616)
“A man is but a little thing in the midst of the objects of nature, yet, by the moral quality radiating from his countenance, he may abolish all considerations of magnitude, and in his manners equal the majesty of the world.”
—Ralph Waldo Emerson (1803–1882)
“And at least you know
That maps are of time, not place, so far as the army
Happens to be concerned—the reason being,
Is one which need not delay us.”
—Henry Reed (1914–1986)