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But anyone with a pair of field glasses can see for himself what Baptistina's daughters are capable of.
ECONOMIST: Asteroid impacts
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Five days of trading the field glasses and taking turns crawling back into the trees to smoke out of sight.
NEWYORKER: The Tree Line, Kansas, 1934
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The days of field glasses and butterfly nets may thus be numbered.
ECONOMIST: A 30-year plan to study America��s ecology is about to begin
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Barnes raised the field glasses up, lowered them, pursed his lips as if in deep thought, and then said, in a newly formed sarcastic voice, Hell, you missed the whole thing, Lee.
NEWYORKER: The Tree Line, Kansas, 1934
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Scheidies says he doesn't buy the argument that the blackout glasses ''level the playing field'' between runners who have some sight and those who have none.
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Eye tracking is accomplished by two small cameras on the rim of the glasses while a scene camera records the field of view of the user.
ENGADGET: SMI Eye-Tracking 3D Glasses use rim-based cameras to adjust perspective