The Institute of Physics ( IOP ) по журналам "Transactions of the Optical Society"
Отображаемые элементы 1-20 из 529
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(1930-06-01)The paper describes a visual modification of a previously described photo-electric method of measuring small angles. Great simplification is introduced by the substitution of visual for photo-electric equipment at the ...
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(1922-01-01)
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(1921-05-01)Various expressions for achromatism are correlated and the usual conditions for achromatism are shown to depend on the tracing of two rays through the system.
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(1925-12-01)The author contends that, from the practical standpoint of quantitative colorimetry, hue and saturation are not the fundamental elements of colour quality but must be regarded merely as derivatives of the trichromatic ...
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(1922-02-01)The nodal slide is only convenient for the examination of lenses over their entire field when these are of normal type. Collimators and lenses should in general be directed to pass through all useful light as symmetrically ...
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(1925-02-01)Since the Thomas Young Oration of 1923 was delivered a number of important papers dealing with the history of spectacles have been published. The present article gives a summary of the fresh evidence brought forward in ...
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(1901-01-01)
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(1921-05-01)
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(1929-01-01)The level described in this paper was designed to assist the initial levelling of a floating system and to enable observations to be made on the constancy of level over extended periods of time. Its error may be determined ...
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(1917-06-01)
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(1924-05-01)The general equation by which the properties of the component parts of a compound optical system are determined is put into a new form. Solutions are obtained consisting of terms containing arbitrary constants together ...
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(1923-10-01)The shapes of the lenses and the types of glass suitable for the construction of an objective free from all first order aberrations in a primary plane for an infinitely distant object are found on the assumption that the ...
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(1922-10-01)A lens suitable for spectroscopic work with aplanatic corrections for all zones may have as large an aperture as f/1 or still greater, all the surfaces being strictly spherical. An actual lens made by Messrs Ross, Ltd, of ...
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(1913-01-01)
Отображаемые элементы 1-20 из 529