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:
“I made him a low curtsy and thanked him for the honor he intended me, but told him I had no kind of ambition to be his upper servant.... I then asked him how many offices he had allotted for me to perform for those great advantages he had offered me, of suffering me to humor him in all his whims and to receive meat, drink, and lodging at his hands; but hoped he would allow me some small wages, that I might now and then recreate myself with my fellow servants.”
—Sarah Fielding (1710–1768)
“Luckless is the country in which the symbols of procreation are the objects of shame, while the agents of destruction are honored! And yet you call that member your pudendum, or shameful part, as if there were anything more glorious than creating life, or anything more atrocious than taking it away.”
—Savinien Cyrano De Bergerac (1619–1655)
“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)