Unless you are following a style guide that specifies otherwise, observe the following conventions.
Italicize titles of journals, books, newsletters, and manuals; letters, words, terms, and equation symbols that are being highlighted for discussion; foreign words; words or phrases that are being emphasized; and names of specific vessels.
Aviation Week and Space Technology
Handbook of Physical Constants
Operator's Manual: TD-100 B&S Spectroscope
Pollution Abstractsthe Journal of the American Chemical Society
If either 1 or 2 is negative, Equation
8 describes a convex reflecting surface.
How does one program the computer, for example, to pronounce the letter
combination gh? In the word thorough, gh has no sound; in
enough, it is pronounced f; in ghost, it is pronounced
g.
The term dielectric is used here to refer to all. . .
Against the criminally stubborn conviction of the professional officer corps that
courage, elan, and naked steel must carry the day, the machine gun was the ultimate
argument.
Bohr returned to Göttingen as a Privatdozent working under
Born.
[In German all nouns are capitalized.]
--Richard Rhodes, The Making of the Atomic Bomb
The SPOT (for système probatoire d'observation de la terre) views the
area in question every 2.5 days.
The Chernobyl reactor surged from its standby level to 50 percent of its capacity
in just 10 seconds.
The experiment is scheduled to be performed during a future mission of the space shuttle
Enterprise.
He returned on a Boeing 757.