The new standard for design started in 1992 when Connecticut first issued the "Preserve the Sound" plates.
Other states began to issue plates that raised money for the environment, including Connecticut's "Preserve the Sound" plate, and in Illinois the "Prevention of Violence" plate, which provides money for shelters for battered women.
But on June 20th, when Mr Blair delivered his report to MPs on the fantastically acrimonious European summit, the sound of plates grinding was unmistakable.
Twice a year, some of the money that drivers pay for the Save the Sound license plates (the ones with the lighthouse scene) gets put into a fund for environmental projects.
The optimal excitation locations of rectangular composite sound radiation plates to produce relatively smooth sound level pressure (SPL) curves are determined using an optimal design method.
Under the optimized conditions, a sound adhesion between any plated materials over the aluminum base is achieved, and a bright, uniform and flawless chromium coating is obtained with a microhardness of HV1029.
Large chord plates showed a steady increase in radiated sound with nozzle-plate separation in this region, while small chord plates tended to give almost constant radiated sound pressure level for varying small separations.
The influence on the control effectiveness of on- and off-resonant excitation and the number and location of the control forces is investigated in terms of the far-field directivity pattern, the plate surface sound intensity, and the plate wavenumber spectrum.
When a segment of a rigid duct is replaced by a plate backed by a hard-walled cavity, grazing incident sound waves induce plate vibration, hence sound reflection.
Some say cliché mimics the sound of a plate dropping into molten metal, or the molten metal being poured onto the plate.
