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:
““The wind doth blow today, my love,”
And a few small drops of rain;
I never had but one true love,
In cold grave she was lain.”
—Unknown. The Unquiet Grave (l. 1–4)
“If the Christ were content with humble toilers for disciples, that wasn’t good enough for our Bert. He wanted dukes’ half sisters and belted earls wiping his feet with their hair; grand apotheosis of the snob, to humiliate the objects of his own awe by making them venerate him.”
—Angela Carter (1940–1992)
“And now good morrow to our waking souls,
Which watch not one another out of fear;
For love all love of other sights controls,
And makes one little room an everywhere.
Let sea-discoverers to new worlds have gone,
Let maps to other, worlds on worlds have shown,
Let us possess one world; each hath one, and is one.”
—John Donne (1572–1631)