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Mark Welser. When Jesuit Christoph Scheiner first observed sunspots in March 1611, he ignored them until he saw them again in October. Then, under the pseudonym Apelles latens post tabulam (Apelles hiding behind the painting), [14] he presented his description and conclusions about them in three letters to the Augsburg banker and scholar Mark Welser.
In 1611, Scheiner observed sunspots; in 1612 he published the "Apelles letters" in Augsburg. Mark Welser had the first three Apelles letters printed in Augsburg on 5 January 1612. They provided one of many reasons for the subsequent unpleasant argument between Scheiner and Galileo Galilei , which began when Galileo responded to the Apelles ...
In his letter to Benedetto Castelli, Galileo argues that using the Bible as evidence against the Copernican system involves three key errors. Firstly, claiming that the Bible shows the Earth to be static and concluding that the Earth therefore does not move is arguing from a false premise; whether the Earth moves or not is a thing which must be demonstrated (or not) through scientific enquiry.
Christoph Scheiner observing sunspots. In late 1611, the Jesuit Christoph Scheiner, a mathematics teacher at Ingolstadt, using the pseudonym Apelles latens post tabulam (Apelles hiding behind the painting), [nb 1] wrote three letters to Welser, claiming the discovery of sunspots.
The monthly mean sunspot number in the northern solar hemisphere peaked in November 2011, while the southern hemisphere appears to have peaked in February 2014, reaching a peak monthly mean of 102. Subsequent months declined to around 70 (June 2014). [54] In October 2014, sunspot AR 12192 became the largest observed since 1990. [55]
In March 1611 Scheiner and his student Johann Baptist Cysat (c. 1587–1657) observed sunspots. Scheiner delayed announcing his discovery for a year and then wrote of it in letters signed "Apelles" to disguise his identity since the presence of stains on the sun was counter to "conservative Christian doctrine". [22]
List of open letters by academics ... The year 1611 in science and technology involved some significant events. Astronomy. February 27 – Sunspots are observed by ...
The first sunspot drawing, John of Worcester around 1128. Sunspot drawing or sunspot sketching is the act of drawing sunspots. Sunspots are darker spots on the Sun's photosphere. Their prediction is very important for radio communication because they are strongly associated with solar activity, which can seriously damage radio equipment. [1]