Ádám Egri

TL;DR: A fragment of a compass dial found at Uunartoq in Greenland is widely accepted as proof of the ability of Vikings to navigate with sun-compasses as mentioned in this paper, and the artefact is half of a wooden compass dial bearing deliberately incised lines that were interpreted as gnomonic lines valid on the day of equinox and near the summer solstice at the 61st latitude.

TL;DR: The behavioural responses of Ephoron virgo and Caenis robusta mayflies to lamps emitting horizontally and vertically polarized and unpolarized light is studied to suggest that the mayfly behaviour observed may facilitate the stability of swarming above water surfaces.

TL;DR: This work deduced an appropriate solar navigation procedure using a twilight board, a shadow-stick and birefringent crystals, which bring together earlier suggested methods in harmony and provide a true skylight compass function.

TL;DR: To eliminate the oviposition of dangered polarotactic aquatic insects emerging from a creek onto the asphalt road crossing the creek, it is suggested to deploy strongly and horizontally polarizing water-filled black trays along the edge of the road during the swarming period, to assist the conservation of the offspring-generation.

TL;DR: In behavioural choice experiments, the water springtail Podura aquatica shows polarotaxis to horizontally polarized light as well as phototaxis, and the results indicate that the threshold d* of polarization sensitivity in P. aquatica is between 10.1 and 25.5%.