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Theoretical Linguistics, ISSN 0301-4428, 07/2015, Volume 41, Issue 1-2, pp. 63 - 68
Journal Article
Theoretical Linguistics, ISSN 0301-4428, 07/2015, Volume 41, Issue 1-2, p. 63
This is a commentary on Péter Rebrus and Miklós Törkenczy's paper "Monotonicity and the typology of front/back harmony" (same journal issue). 
Vowel harmony | Vowels | Language typology
Journal Article
Journal Article
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, ISSN 1364-5021, 09/2017, Volume 473, Issue 2205, p. 20170358
According to Thorkild Ramskou's theory proposed in 1967, under overcast and foggy skies, Viking seafarers might have used skylight polarization analysed with... 
CLOUDY CONDITIONS | MULTIDISCIPLINARY SCIENCES | sky polarization | calcite | SKIES | ANGLE | sunstone crystal | tourmaline | NORTH-ATLANTIC | ANIMAL ORIENTATION | IMAGER | cordierite | ATMOSPHERIC OPTICAL PREREQUISITES | POLARIZED SKYLIGHT | Viking navigation | CLEAR | SUNSTONE | 165 | 1005 | 141 | 1009
Journal Article
Proceedings: Mathematical, Physical and Engineering Sciences, ISSN 1364-5021, 6/2013, Volume 469, Issue 2154, pp. 1 - 16
An eleventh century artefact, a fragment of a compass dial found at Uunartoq in Greenland, is widely accepted as proof of the ability of Vikings to navigate... 
Summer solstice | Ocean navigation | Navigation | Sundials | Equinoxes | Fall lines | Slope of a line | Geometric lines | Compasses | Parallel lines
Journal Article
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, ISSN 1364-5021, 06/2013, Volume 469, Issue 2154, pp. 20130021 - 20130021
An eleventh century artefact, a fragment of a compass dial found at Uunartoq in Greenland, is widely accepted as proof of the ability of Vikings to navigate... 
Viking | Navigation | Sun shadow board | Sun-compass | Sundial | Geometrical construction | geometrical construction | sun-compass | navigation | sun shadow board | MULTIDISCIPLINARY SCIENCES | sundial | Shadows | Construction | Boards | Noon | Artefacts | Latitude | Dials | Culture
Journal Article
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, ISSN 1364-5021, 06/2014, Volume 470, Issue 2166, p. 20130787
Vikings routinely crossed the North Atlantic without amagnetic compass and left their mark on lands as far away as Greenland, Newfoundland and Baffin Island.... 
Horizon board | Twilight board | Sunstone | Sky polarization | Skylight compass | Viking navigation | CLOUDY CONDITIONS | MULTIDISCIPLINARY SCIENCES | sky polarization | SKIES | ANGLE | ORIENTATION | horizon board | sunstone | skylight compass | NAVIGATION | ATMOSPHERIC OPTICAL PREREQUISITES | POLARIZED SKYLIGHT | twilight board | CLEAR | 141 | 1009 | Biological Sciences | Naturvetenskap | compass | skylight | Biologi | Natural Sciences
Journal Article
Proceedings: Mathematical, Physical and Engineering Sciences, ISSN 1364-5021, 6/2014, Volume 470, Issue 2166, pp. 1 - 18
Vikings routinely crossed the North Atlantic without a magnetic compass and left their mark on lands as far away as Greenland, Newfoundland and Baffin Island.... 
Navigation | Asymptotes | Crystals | Materials | Twilight | Horizon | Equinoxes | Calcite | Compasses | Horizon coordinate system
Journal Article
Royal Society Open Science, ISSN 2054-5703, 01/2016, Volume 3, Issue 1, p. 150406
According to an old but still unproven theory, Viking navigators analysed the skylight polarization with dichroic cordierite or tourmaline, or birefringent... 
Dichroism | Birefringence | Sunstone | Compass direction | Sky polarization | Viking navigation | MULTIDISCIPLINARY SCIENCES | sky polarization | SKIES | ANGLE | CLOUDY | dichroism | compass direction | NORTH-ATLANTIC | PATTERN | birefringence | ANIMAL ORIENTATION | sunstone | INSECTS | ATMOSPHERIC OPTICAL PREREQUISITES | POLARIZED SKYLIGHT
Journal Article
Conservation Biology, ISSN 0888-8892, 12/2010, Volume 24, Issue 6, pp. 1644 - 1653
Journal Article
Applied Optics, ISSN 1559-128X, 09/2013, Volume 52, Issue 25, pp. 6185 - 6194
It is widely accepted that Vikings used sun-compasses to derive true directions from the cast shadow of a gnomon. It has been hypothesized that when a cast... 
CLOUDY CONDITIONS | NAVIGATION | SKIES | ANGLE | OPTICS | ATMOSPHERIC OPTICAL PREREQUISITES | POLARIZED SKYLIGHT | CLEAR | Weather | Sunlight | Spatio-Temporal Analysis | Magnetic Fields | Orientation | Refractometry - instrumentation | Calcium Carbonate - chemistry | Rayleigh scattering | Research | Polarization (Light) | Analysis | Polariscope
Journal Article
Applied Optics, ISSN 1559-128X, 02/2015, Volume 54, Issue 5, pp. 1065 - 1077
Cloud cover estimation is an important part of routine meteorological observations. Cloudiness measurements are used in climate model evaluation, nowcasting... 
SKYLIGHT | SKY IMAGING POLARIMETRY | CLEAR-SKY | ANIMAL ORIENTATION | POLARIZATION PATTERNS | MOONLIT | SKIES | OPTICS | ATMOSPHERIC OPTICAL PREREQUISITES | VIKING NAVIGATION | SUNLIT | Polarization (Light) | Solar radiation | Fluctuations (Physics) | Analysis | Polarization | Algorithms | Clouds | Neural networks | Vessels | Durability | Climate models | Expeditions
Journal Article
International Journal for Parasitology, ISSN 0020-7519, 06/2013, Volume 43, Issue 7, pp. 555 - 563
Trapping flies with sticky paper sheets is an ancient method. The classic flypaper has four typical characteristics: (i) its sticky paper is bright (chamois,... 
Water detection | Sticky black surface | Horsefly | Tabanid trap | Host choice | Polarotaxis | MILK-PRODUCTION | LIGHT | BITING FLIES | FLY | SOLAR PANELS | CANOPY TRAP | COLOR | NIGROVITTATUS DIPTERA | DEER FLIES TABANIDAE | POLARIZATION | PARASITOLOGY | Behavior, Animal | Animals | Cattle | Entomology - instrumentation | Horses | Diptera - physiology | Entomology - methods
Journal Article
Journal of the Optical Society of America A: Optics and Image Science, and Vision, ISSN 1084-7529, 07/2014, Volume 31, Issue 7, pp. 1645 - 1656
It is a widely discussed hypothesis that Viking seafarers might have been able to locate the position of the occluded sun by means of dichroic or birefringent... 
CLOUDY CONDITIONS | ORIENTATION | SKIES | ANGLE | OPTICS | ATMOSPHERIC OPTICAL PREREQUISITES | POLARIZED SKYLIGHT | CLEAR | Astronomy - methods | Stars, Celestial | Solar System | Ships | Refractometry - methods | Errors | Navigation | Planetariums | Navigators | Localization | Position (location) | Sun | Atmospherics
Journal Article