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Please note that our next –
and last – general meeting for this year will be on Wednesday November
13, as listed in Coming Events. Holding a general meeting every other
month seems to have been successful, in that attendance has been higher.
For example, there were 27 people at our September meeting.We will continue
scheduling a star party each month.
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In Memoriam: Jack Mollard
Jack Mollard
recently passed away, at the age of 77, at his home on the Double Diamond
Ranch. He was preceded in death by his wife, Nancy. Jack was
a charter member of the BBAS, and a steady attendee except for the past
year, when his declining health kept him from attending as many of our
functions as he would have wished. A memorial service will be announced. |
Giovanni Belli Discusses
the Galileo Problem
by John Bell
(Reported by Jim Walker)
John Bell arranged a visit by his friend and confidante Signor Giovanni
Belli, of the University of Padua, all the way from the 17th century.
Signor Belli appeared wearing the traditional scholar’s robe of the day.
A Professor of Philosophy in the
early 1600s, Belli noted that Galileo had been brought before the Inquisition
for the second time. As a philosopher, not an astronomer, Belli claimed
to be neutral; thus, he was not eager to discuss the Galileo problem.
Indeed, he had never looked through Galileo’s “spyglass,” although there
was no question that such devices allow people to see more things.
Belli remained a steadfast Aristotelian, holding that the earth was the
stationary center of the universe.
In the universities of the day,
Astronomy was included in the Departments of Mathematics. Astronomy
was concerned with describing the motions of things in the heavens, not
with their true natures. The true nature of things was to be left
to the Church for determination.
Galileo was not happy just being
a professor of astronomy. He made his own spyglass, and left the
authorities with the impression that he had invented the device.
He said he wanted to spend the rest of his life in the service of the Doge,
the local ruler. But he presented his new book, The Sidereal Messenger,
to the Grand Duke of Padua, instead of the Doge. As a result, he
was given lifetime employment by the Grand Duke.
With his new spyglass, Galileo
discovered the phases of Venus. He was wined and dined by Cardinals,
which went to his head. He claimed to have discovered sunspots.
He became a more dedicated Copernican, holding that the earth and planets
revolved around the sun.
At a dinner with Galileo, the
Grand Duchess pointed out that Joshua ordering the sun to stand still was
inconsistent with Copernicus. Galileo said venturing into scriptural
interpretation was risky: the common people were “rude and ignorant,” and
the Bible was not to be interpreted literally.
Signor Belli raised several arguments
against the Copernican theory, the notion that the earth revolves around
the sun. If we’re moving through space, then why don’t we feel the
motion? If we fire a cannon ball to the east, then why doesn’t it
travel faster than a ball fired to the west? If we fire a cannon
ball vertically, why does it fall directly downward as our position in
space changes? Finally, in the course of a year, why don’t the nearer
stars shift their positions in relation to the farther stars, in much the
way that a finger at arm’s length seems to shift its position as we alternately
close one eye and then the other? On the other hand, the westward
motion of the tides offers a strong argument for Galileo and the
Copernican theory.
Galileo’s book, A Dialog of
Two Systems, written in the Italian vernacular, instead of the usual
scholarly Latin of the day, offered powerful arguments in favor of Copernicus.
Simplicio, the character in the dialog who advocated Aristotle, was soundly
refuted. Nevertheless, Galileo’s most telling opposition was from
scholars – not the Church – even though the Church made the mistake of
pronouncing on matters of fact versus faith.
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