| Smithsonian Institution - 1910 - 592 pages
...that the sun is variable, having not only a periodicity connected with the periodicity of sun spots, but also an irregular, nonperiodic variation, sometimes...to 10 per cent of the total radiation in magnitude. I O £ ol i - /i -y I l es lSO .s> .92 .94 94' .93 .86 »J i 3a MONTHLY SOLAR-CONSTANT VALUtS, CALORIES.... | |
| Smithsonian Institution. Board of Regents - 1914 - 1018 pages
...with the periodicity of sui spots, but also an irregular, nonperiodic variation, sometimes run ning its course in a week or 10 days, at other times in...over irregular fluctuations of from 2 to 10 per cent oi the total radiation in magnitude. 0. O 1) a m Z Z O 103 i.ao .si .92 .s» 3+ .as as 97 i-»e MONTHLY... | |
| Alexander McAdie - 1917 - 344 pages
...also an irregular, non-periodic variation, sometimes running its course in a week or ten days, again in longer periods, and ranging over irregular fluctuations of from 2 to 10 per cent of the total. It has also been shown by Abbot, Fowle, Kimball, and others that great volcanic eruptions materially... | |
| 1918 - 172 pages
...also an irregular, nonperiodic variation, sometimes running its course in a week or 10 days, again in longer periods, and ranging over irregular fluctuations of from 2 to 10 per cent of the total. It has also been shown by Abbot, Fowle, Kimball, and others that great volcanic eruptions materially... | |
| |