dark field
: the dark area that serves as the background for objects viewed in an ultramicroscope
Recent Examples on the Web
//Assuming that a circumference C exists, circumscribed to the dark field DF, verify that the straight line r is external to such circumference.
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Quanta Magazine, "An Italian Cosmologist Who Wanders in Dante’s Dark Wood," 13 Nov. 2018
//In the dark fields, Amish farmers hitched their horses to black buggies and left quietly.
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Jason Nark, Philly.com, "As milk prices keep falling, more Pa. dairy farmers are calling it quits," 17 Apr. 2018
//Assuming that a circumference C exists, circumscribed to the dark field DF, verify that the straight line r is external to such circumference.
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Quanta Magazine, "An Italian Cosmologist Who Wanders in Dante’s Dark Wood," 13 Nov. 2018
//Pettorino’s translation reads: Given a line segment AB of size equal to our life path, consider its midpoint M. If D is a man called Dante, D shall be coincident with M.
The segment AB shall be contained in a dark field DF.
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Quanta Magazine, "An Italian Cosmologist Who Wanders in Dante’s Dark Wood," 13 Nov. 2018
First Known Use of dark field
1865, in the meaning defined above
Dictionary Entries near dark field