The phrase "a brief demonstration" is grammatically correct and can be used in written English.
It can be used as a noun phrase to describe a short display or presentation of something. Example: The professor gave a brief demonstration of the scientific method during the first class of the semester.
After the performance Ms. Frankfurt will give a brief demonstration of different ballet styles, including that of Balanchine.
This year the company's artistic director, Diana Byer, will also give a brief demonstration on the importance of lighting to a performance.
"Roboto" was a brief demonstration (backed by the 1983 Styx song "Mr. Roboto") of a foot-high, vaguely humanoid robot, made of wires and circuits.
Apple Computer yesterday gave a brief demonstration of iChat, an instant messenger program that is intended to be compatible with America Online's AOL Instant Messenger Service.
Thirty-five foreign believers in the outlawed Falun Gong spiritual movement were detained by the police today after holding a brief demonstration in Tiananmen Square.
In a brief demonstration at the auto show, it looked like mastering all the buttons and control dials might take some serious training.
On Tuesday night there was a proper but very brief demonstration, a candlelight vigil for people mauled, and the three demonstrators killed, in last month's police riots, but since then things have dwindled down to a few small and faint-hearted episodes of chanting, and some awkward efforts at marching, by groups of Muslim women.
Furthermore, infants can overcome these cognitive limitations with only a few, brief demonstrations spaced over several weeks.
In short, in the argument of the Brief Demonstration, Leibniz found a devastating criticism not only of Cartesian physics, but also of Early Leibnizian physics.
There's also a brief cookery demonstration.
Mr. Taylor gives a brief, basic demonstration of its foundation in multiple rhythms.
