Philosophical MagazineTaylor & Francis., 1898 - Physics |
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Page 2
general discussion of Fraunhofer's diffraction - phenomena of a circular aperture for a finite source of light , and show how the intensity of illumination in the focal plane can be mechanically evaluated for a luminous source having ...
general discussion of Fraunhofer's diffraction - phenomena of a circular aperture for a finite source of light , and show how the intensity of illumination in the focal plane can be mechanically evaluated for a luminous source having ...
Page 10
Thus , if the boundary does not show great irregularities , we can approximately , assume the bounding edge to be straight for contiguous If the mean angle an subtended by the zone at the given point be found , the intensity 1 I 27 £ « ...
Thus , if the boundary does not show great irregularities , we can approximately , assume the bounding edge to be straight for contiguous If the mean angle an subtended by the zone at the given point be found , the intensity 1 I 27 £ « ...
Page 21
Thus the variation of intensity is greatest near the rim , but the change does not take place abruptly ; the intensity fades away gradually in the neighbourhood of the rim , as illustrated in the accompanying diagrain * ( fig . 9 ) .
Thus the variation of intensity is greatest near the rim , but the change does not take place abruptly ; the intensity fades away gradually in the neighbourhood of the rim , as illustrated in the accompanying diagrain * ( fig . 9 ) .
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Contents
m FIFTH SERIES | 1 |
Mr W Sutherland on the Relative Motion of the Earth | 23 |
F Brush on the Transmission of Radiant Heat | 31 |
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adjusted apparatus appear apply approximately bars becomes bulb calculated cell centre charge circuit coil compared conductivity considerable constant containing cooling copper correction corresponding curve described determined direction distance effect electric equal equation error experiments expression field force gases give given glass greater heat Hence hydrogen increase inductances integral intensity length less light lines liquid magnetic means measured mercury metal method minutes motion nature nearly negative object observed obtained ordinary passing Phil placed plane plate positive possible potential practically present pressure produced range rays represented resistance respectively scale seen shown side similar simple solution standard substitutions suppose surface taken temperature theory thermometer thickness tube variation vary vertical volume waves wire zero zinc