Word: microns
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...budget increases the NSF's funding from $911 million to about $1 billion and provides for additional research on human nutrition and the environment, sub-micron science, and laser chemistry...
Most artificial smokes, Miss Raskin explained, are made of fairly heavy materials such as phosphorus pentoxide or petroleum oils. Even if their particles are only one micron (one twenty-five thousandth of an inch) in diameter, they fall through air at about eight inches per hour, which she considers too fast. Backed by the Air Force, Miss Raskin discovered a way to fluff various kinds of plastic into spherical particles that are mostly empty cells and almost as light as air. Miss Raskin's particles can be colored, and they fall 1,250 times slower than solid smoke particles...
...diffusion pump works by blowing a strong jet of mercury or oil vapor into the neck of the vessel to be emptied. The vapor stream traps air molecules and sweeps them out through a series of locks. With this equipment, Morse got down to a working vacuum of one micron (a thousandth of a millimeter...
...educated in France. From 1901 to 1905 he was government bacteriologist in Guatemala. At present he is at Alexandria, Egypt, director of the bacteriological service of the Egyptian Sanitary, Maritime, and Quarantine Council. †A millicron is one one-millionth of a millimeter, or one one-thousandth of a micron, or one twenty-fifth of a billionth of an inch. *This is the basis of the argument for Ipana tooth paste as advertised princeipally in Sunday papers and fiction-magazines...