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:
“Westron wind, when will thou blow?
The small rain down can rain.
Christ, that my love were in my arms,
And I in my bed again.”
—Unknown. Western Wind (l. 1–4)
“Communists have always played an active role in the fight by colonial countries for their freedom, because the short- term objects of Communism would always correspond with the long-term objects of freedom movements.”
—Nelson Mandela (b. 1918)
“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)