 | American Association for the Advancement of Science - 1883 - 818 pages
...of the divisions. I then opened the shutters for an observation of the sun. After an interval of ten minutes, observations with the level were resumed...results of the observations on three days. 1881 Nov. 13. Nov. 14. Nov. IB. Shutters closed. 1 div=1.76" Th. = !W 1 div = 1.20" Th. = 40' 1 div = 2.06" Th... | |
 | American Association for the Advancement of Science - 1883 - 420 pages
...of the divisions. I then opened the shutters for an observation of the sun. After an interval of ten minutes, observations with the level were resumed...results of the observations on three days. 1881 Nov. 13. Nov. 14. Xov. 15. Shutters closed. 1 div=1.70" Th.=38° 1 div = 1.20" Th.=40° 1 div = 2.0(i" Th... | |
 | 1883 - 966 pages
...the divisions. I then opened the shutters for itn observation of the sun. After an interval of ten minutes, observations with the level were resumed,...results of the observations on three days: 1881 Nov. 18. Shutters closed, one division = 1.76", thermometer = 38° Shutters open, one division = 2.08",... | |
 | American Association for the Advancement of Science - 1883 - 422 pages
...of the divisions. I then opened the shutters for an observation of the sun. After an interval of ten minutes, observations with the level were resumed...results of the observations on three days. 1881 Nov. 13. Nov. 14. Nov. 15. Shatters closed. 1 div=1.76" Th.=3S' 1 div = 1.20" Th.m1O° 1 div = 2.06" Th... | |
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... surprised to find, not only a continued diminution of the value of one division, but a well defined shifting of the zero of the level. By noon I had nearly completed the examination for the first half of the divisions. I then opened the shutters for... 