Balázs Bernáth

TL;DR: The total number and sex of dragonflies trapped by the crude-oiland water-filled trays during the first choice experiment and the relative brightness, degree of polarization and direction of polarization of light reflected from the trays are shown.

TL;DR: Using imaging polarimetry in the red, green and blue parts of the spectrum, in multiple-choice field experiments the threshold p* of ventral polarization sensitivity in mayflies, dragonflies and tabanid flies was measured, the positive polarotaxis of which has been shown earlier.

TL;DR: It is concluded that the optimal times of day for aquatic insects to disperse are the periods of low and high solar elevations h, and the h-dependent reflection–polarisation patterns, combined with an appropriate air temperature, clearly explain why polarotactic aquatic insects disperse to new habitats in mid-morning, and/or around noon and/ or at dusk.

TL;DR: In this paper, the authors observed that dragonflies distinguish a bright from a dark pond before they get sufficiently close to perceive brightness differences, which is a well-known optical phenomenon that two water bodies cannot be distinguished from each other from a distance.

TL;DR: It is shown that the fourth neutral point exists at the expected location and has characteristics similar to those of the Arago, Babinet, and Brewster points, and discussed why this anonymous "fourth" neutral point has not been observed in previous air- or space-borne polarimetric experiments.