Spikes is the mascot of the Minor League AAA Rochester Red Wings. Spikes is 6 feet tall, and weighs 180 lbs. He was created after the 1997 season, the same year in which the Red Wings got their new stadium, Frontier Field.
These are commonly used under speaker units to isolate vibrations. By mounting speakers on spikes, the contact area between the speaker cabinet and the base is very small and vibrations are not transferred easily.
A quality control measure where a known amount of chemical is added to the sample to determine how well the chemical is recovered from the sample when analyzed.