| 词条 | Solar cycle 7 |
| 释义 |
|cycle_num=7 |start_date=May 1823 |end_date=November 1833 |duration=10.5 |max_count=119.2 |max_count_date=November 1829 |min_count=0.2 |prev_name=Solar cycle 6 |prev_dates=1810-1823 |next_name=Solar cycle 8 |next_dates=1833-1843 }}Solar cycle 7 was the seventh solar cycle since 1755, when extensive recording of solar sunspot activity began.[2][3] The solar cycle lasted 10.5 years, beginning in May 1823 and ending in November 1833 (thus overlapping the Dalton Minimum). The maximum smoothed sunspot number (SIDC formula) observed during the solar cycle was 119.2 (November 1829), and the starting minimum was 0.2.[4] See also
References1. ^Excerpts from Solar Observations During 1843 by Heinrich Schwabe, (Astronomische Nachrichten, vol. 20., no. 495, 1843) {{Solar cycles}}{{Use dmy dates|date=October 2010}}{{DEFAULTSORT:Solar Cycle 07}}{{sun-stub}}2. ^Kane, R.P. (2002). "Some Implications Using the Group Sunspot Number Reconstruction". Solar Physics 205(2), 383-401. 3. ^{{cite web | title=The Sun: Did You Say the Sun Has Spots? | url=http://www.spacetoday.org/SolSys/Sun/Sunspots.html | publisher=Space Today Online | accessdate=12 August 2010}} 4. ^SIDC Monthly Smoothed Sunspot Number. " " 1 : Solar cycles |
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