Thresholding gray-scale images to produce bitonal images. An elliptical beam geometry with the minor beam axis oriented along the linearly varying axis of the filter is used. High voltage pulses, delivered to the electrodes, create an electric field that kills subcutaneous fat cells. The flow of coolant is then guided in an axial direction over the magnet arrangement, thereby enabling the electric machine to be evenly cooled on the entire periphery thereof. The different types of fuzes may include a type that communicates height of burst information a type that communicates telemetry, and a type that communicates both HOB and telemetry information. A coaxial laser beam machining head is configured such that the GMA electrode is disposed in a space portion between a first divisional laser beam and a second divisional laser beam, which have been formed by division by first and second reflecting mirrors, coaxially with the laser beams.