A water quality analyzer for real-time detection according to the invention comprises a biased AC electro-osmosis cell for receiving a fluid to be analyzed having a plurality photosynthetic organisms therein, and concentrating the plurality photosynthetic organisms into at least one concentrated region. A system using synthetic aperture beam forming detects motion in an image and displays a degree of the motion in various manners, and thus, a user is allowed to actively cope with the motion by adjusting the number of synthetic beams, or the system is allowed to immediately change the number of synthetic beams with reference to data stored in advance. Systems are disclosed for using a topical substance to detect contact of a phototreatment device with a tissue, detect speed of a phototreatment device over the tissue, detect regions of tissue that have been treated by a phototreatment device andor to provide other benefits to the tissue such as improved skin tone and texture, tanning, etc.