Particle image velocimetry of a wake (from N. Vandenberge et al.)

Smoke wire flow over a wing (from T. Omer)

Dye visualization on an oscillating cylinder (from M. Canals)

Supersonic oil flow visualization over a cylindrical element (from P. Danehy et al.)

Composite dye visualization (left) and schlieren photograph (right) of a droplet impact (from A. Wilkens et al.)

Infrared thermographic visualization of boundary layer transition on a wing in flight (from W. Saric et al.)