Movie showing small float experiments for a small amplitude wave (100mm circ 20L) in real time. The top panel shows the view from above of the float, with the location and velocity vector of the float overlaid. The central panel shows the x, z plane from the side of the tank, made up of images from two cameras merged to form a single image. The bottom panel shows the time series of measured float location. The false colour scheme displays light intensity (raw image) from reflected seeding particles.