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  • 1
    Electronic Resource
    Electronic Resource
    Information and Control in the Visual System (Substance of a Friday Evening Discourse Delivered at the Royal Institution, London, on November 2) (1963)
    [s.l.] : Nature Publishing Group
    Nature 198 (1963), S. 630-632 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] VISUAL perception may be regarded as a process in which information is filtered, coded, transmitted and subjected to analysis. In primitive conditions, survival depends on using the information to produce a response which is both rapid and appropriate. In order that the response may be rapid the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/198630a0
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  • 2
    Electronic Resource
    Electronic Resource
    Shadows of the Retinal Blood-Vessels seen by Monochromatic Light (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 661-661 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is well known that the shadows of the retinal blood-vessels may be seen if a pinhole is held in front of the eyes near to the anterior focus and moved from side to side. They are also sometimes seen in a microscope field, though they disappear if the eye is held still and comfortably ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/137661a0
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  • 3
    Electronic Resource
    Electronic Resource
    Vision with a Stabilized Retinal Image (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 36-37 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It should be possible, by the following method, to obtain an image which does not move across the retina. The subject wears a contact lens which is specially made to fit his eye tightly and on which a small optical flat has been worked. The flat is covered (by vacuum evaporation) with a highly ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/170036a0
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  • 4
    Electronic Resource
    Electronic Resource
    Continuous Absorption of Light in Sodium Vapour (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 723-724 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The value of ?; has been calculated by Trumpy8, who obtains the value 3-1 X 10~19 cm.2, and by Rudkjobing4, who obtains 1 -6 X 10~19 cm.2. Rudkjob-ing's results indicate that the absorption at 2110 A. is a few per cent of ?;, and that there may be a minimum near this wave-length. It is recognized ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/165723b0
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  • 5
    Electronic Resource
    Electronic Resource
    Properties of Crystalline Magnesium Oxide (1935)
    [s.l.] : Nature Publishing Group
    Nature 136 (1935), S. 70-71 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ARTIFICIALLY produced crystals of magnesium oxide (MgO) are now available commercially ; since they are formed as a by-product in a commercial process, they are not expensive. Our samples were obtained from the Norton Company, Woreester, Mass., U.S.A. Most of the pieces of crystal are about 1 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/136070b0
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  • 6
    Electronic Resource
    Electronic Resource
    Absorption of Light in Gases (1934)
    [s.l.] : Nature Publishing Group
    Nature 134 (1934), S. 935-935 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] CONTINUING an earlier experiment1, we have measured the absorption of light by cæsium vapour in the presence of helium. We find that the addition of helium greatly reduces the absorption by cæsium, about 3 cm. of helium being sufficient to reduce it to half the value obtained for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/134935b0
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  • 7
    Electronic Resource
    Electronic Resource
    A Rapid Visual Test for Vitamin A Deficiency (1939)
    [s.l.] : Nature Publishing Group
    Nature 143 (1939), S. 285-285 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A RAPID visual test for vitamin A deficiency has been described by Gridgeman and Wilkinson1, by Haines2, and recently by Pett3. In this method the patient is first asked to view a strong light (of intensity I), for a standard time T. Then this light ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/143285a0
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  • 8
    Electronic Resource
    Electronic Resource
    Absorption of Light in Cæsium Vapour (1933)
    [s.l.] : Nature Publishing Group
    Nature 131 (1933), S. 132-133 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WE have measured the absorption of light in cæsium vapour, by photographic photometry, from the series limit (λ 3184 A.) to λ 1935 A. The absorption cell was a quartz tube two metres in length. The vapour was superheated to about 270° C. and the vapour pressure was varied from 0.15 mm. to 0.6 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/131132c0
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  • 9
    Electronic Resource
    Electronic Resource
    Photo-electric Absorption of Radiation in Gases (1938)
    [s.l.] : Nature Publishing Group
    Nature 142 (1938), S. 756-756 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A LETTER on the above subject by Page1 and a reply by Menzel2 have recently appeared in NATURE. While I am in agreement with most of Dr. Menzel's letter, I feel that discrepancies between theory and laboratory experiment in the above field are more radical than his ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/142756b0
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  • 10
    Electronic Resource
    Electronic Resource
    Relativistic Theory of a Rigid Body (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 705-705 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have made the following experiment to look for the predicted shift. A Michelson interferometer (made by Messrs. Hilger-Watts) was modified : (a) by mounting it on a suitable stand so that the arm along which the light enters is horizontal and the other arm is tilted so that the observer looks ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/170705a0
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