Abstract
POLARIZATION of the total light of the Comets 1956h and 1957d was studied photographically by simultaneous exposures with three objectives and three ‘Polaroids’. The planes of polarization of the three ‘Polaroids’ were at 120°. 2-in. objectives were used at ƒ/9 with Agfa ‘Astro’ panchromatic plates. The characteristic curve was determined by comparison with an exposed photometric wedge. Errors due to the instrument were measured by means of light from an artificial source, polarized to a known degree by reflexion from a glass surface. The error of the polarization determined is ± 2.5 per cent.
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References
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BLAHA, M., HRUŠKA, A., ŠVESTKA, Z. et al. Polarization of Light of the Comets Arend-Roland (1956h) and Mrkos (1957d). Nature 182, 331–332 (1958). https://doi.org/10.1038/182331b0
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DOI: https://doi.org/10.1038/182331b0
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