11 research outputs found

    The origin and abundances of the chemical elements

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    The Time-Distance Radar Plot

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    II—Some Problems of Interplanetary Navigation

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    Ãœber Interferenz von Kanalstrahlenlicht

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    The ‘Twilight-setting’ Star Globe

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    A Standard-Time Sundial

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    Air Navigation by Zenith-Photography

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    ‘The Earth but a Satellite of the Sun’

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