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Contents
APRIL 1950 | 239 |
RADIO WHISTLES SIDNEY VAN DEN BERGH 177 | 256 |
THE NEW ROYAL GREENWICH OBSERVATORY | 479 |
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Common terms and phrases
Adams American angle appeared Astronomical August bright building California called changes circle close College comet complete continued correction Crater Department determined direction Director distance early earth eclipse effect evidence fact fall field FIGURE give given Holden indicated Institute interest iron Italy July June known later Lick Observatory light lines longitude magnitude March mass material maximum mean measurements meeting meteor meteorite method Michigan Miss month moon motion Mount mountain night Notes Nova observed obtained original period photographic planets plates position possible present President probably Professor published recent record seen shows side Society solar specimens spectra spectrum stars stellar surface Table taken telescope theory tion University variable visible Wilson