Posted 5/19/2012

With apologies to the people who designed the Pokemon games...

For non-physicists, or at least anyone who hasn't had to deal with a dye laser, the woofer is a piece of glass in the laser that is used to slowly adjust the wavelength of the light from the laser (as opposed to the tweeter, which is used for quick adjustments). In my experience it is always the filthiest part of the laser.