The use of instrumentation and techniques for visualizing material and details that cannot be seen by the unaided eye. It is usually done by enlarging images, transmitted by light or electron beams, with optical or magnetic lenses that magnify the entire image field. With scanning microscopy, images are generated by collecting output from the specimen in a point-by-point fashion, on a magnified scale, as it is scanned by a narrow beam of light or electrons, a laser, a conductive probe, or a topographical probe.
A country in NORTH AMERICA between CANADA and MEXICO.
D049711
History, Modern 1601-
The period of history from 1601 of the common era to the present.
History, Modern,Modern History,History of Medicine, Modern,Medicine, Modern,Modern History (Medicine),Modern Medicine,1601- History, Modern,History, Modern (Medicine),History, Modern 1601,Modern 1601- History