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:
“Yknow, George, I feel that in a small way were doing something important. Its satisfying a fundamental urge. Its deep in the race for a man to want his own roof and walls and fireplace. And were helping him get those things in our shabby little office.”
—Frances Goodrich (18911984)
“Adultery itself in its principle is many times nothing but a curious inquisition after, and envy of another mans enclosed pleasures: and there have been many who refused fairer objects that they might ravish an enclosed woman from her retirement and single possessor.”
—Jeremy Taylor (16131667)
“The faces of most American women over thirty are relief maps of petulant and bewildered unhappiness.”
—F. Scott Fitzgerald (18961940)