Friday, October 26, 2007

apod 1.7



This is a picture of saturn in the crescent phase.I think that it is very interesting that this picture could not be taken from earth, but had to be taken from another object in space. This picture makes it very easy to see the different rings of saturn and creates a very clear image.

Friday, October 12, 2007

Pierre Gassendi

Aviel Kanter
Period 0
Astronomy
12, October 2007
Pierre Gassendi
Pierre Gassendi was born on January 22nd, 1592 in Champtercier, France. He was initially educated by his uncle. He then was admitted to the College of Digne. He later pursued his studies at the University of Aix. Here he studied philosophy and theology. He also received the degree of Doctor of Theology at Avignon. He then took his holy orders in 1617. However, in 1624, Gassendi left Aix and moved to a canonry at Grenoble . It was here that he published the beginnings of his writings, Exercitationes paradoxicae adversus Aristoteleos.
In addition to his interest in ancient philosophy, he was greatly concerned with issues dealing with astronomy and optics. He published the works called Parhelia, sive soles quatuor (1630) and Mercurius in sole visus (1632). Gassendi followed Galileo and Kepler and became increasingly dissatisfied with the Peripatetic, or Aristotelian, system. Yet, as it was a controversial time period, he held off on publishing his theories.
He then moved to Paris and lived there from 1628 to 1632. Here he met many friends and colleagues such as Boulliau, Mersenne, Mydorge, Naude, and La Mothe le Vayer. He also traversed through Holland and Flanders, all the while continuing to observe and work on his speculations. During his travels, he wrote an essay parahelia, or “sun dogs,” and made observations on the phenomenon of the transit of Mercury that Kepler had predicted. Gassendi was also the first person to see the transit of a plant across the Sun. He viewed the transit of Mercury, just as Kepler had hypothesized. He also published a book called De motu impresso a motore translato, which delved into his theories on motion and inertia.
Gassendi’s observations also caused some controversy. His work, De motu impresso a motore translato, was assailed by criticism from his adversary, Jean-Baptist Morin. Gassendi also began to respond to the theories of Renee Descartes. He objected to the fundamental propositions that Renee Descartes set forth. These objections were published in 1642.
In 1644, Gassendi was appointed to the prestigious position of Chair of Mathematics at the College Royal in Paris. He lectured and taught there for several years with great success. In 1647, Gassendi produced one of the two works for which he is most remembered: De vita, moribus, et doctrina Epicuri libri oct. The second was Syntagma philosophiae Epicuri, which was published in the same year.
In 1648, bad health forced him to resign from teaching at the College Royal, and instead he traveled to the south of France. He came back to Paris in 1653 and published biographies on Tycho Brahe and Copernicus. In 1655, Gassendi passed away from a lung condition. A bronze statue was erected in Digne to keep his memory alive.
"Pierre Gassendi." Wikipedia, The Free Encyclopedia. 10 Oct 2007, 21:21 UTC. Wikimedia
Foundation, Inc. 11 Oct 2007 <http://en.wikipedia.org/w/index.php?title=Pierre_Gassendi&oldid=163658255>.
"Pierre Gassendi." American Council of Learned Societies: Dictionary of Scientific Biography. 5
vols. New York: Charles Scribner's Sons, 1981.
Hatch, Robert A. "Pierre Gassendi." Professor Robert a. Hatch: the Scientific RevolutionHomepage. Feb. 1998. 11 Oct. 2007 .

Tuesday, October 9, 2007

observation 1.7

October 9th
approx. 7:00 am
clear skies, just after sun rise
heading towards pine view from downtown sarasota

as i was driving this morning i was able to barely see the moon. i saw it as i was sitting at a traffic light looking up through my window shield. i was trying to find venus because i knew the moon was supposed to be located directly under it. however, i could not find venus, just the moon. it was a very small sliver and i was only able to focus my eyes on it for a few seconds at a time (granted the light only stayed red for about 30 seconds..). i had never seen the moon that small before so it was very interesting to see it right before it becomes a new moon.

Friday, October 5, 2007

apod 1.6




this is a picture of the path of the sun over the course of a year. i think the most interesting part of the photo is the one image of the sun where it is in a total solar eclipse. it has the distinctive white glow around the outside and the seemingly "black hole" in the center. i really like this picture because you can actualy see the steps the sun take to get back to a solar eclipse. i also find it amazing that the photographer had enough time and patience to go out every day at the same time for a year and take these pictures!

observation 1.6

Last night i was going to go out and observe but it stared raining. However, when i was out to dinner we were sitting right by the window. I was watching the lightning as the rain kept coming down. it seemed different than normal lightning as it seemed to linger in the sky much longer than a regular bolt of lightning. it was very cool. i know this isnt exactly astronomy but i thought it was interesting and it has to do with the sky.

observation 1.5

Thursday, September 27th

I went out and observed the moon tonight. It looked as if it were a full moon. Yet, the most distinguishable feature of the moon tonight was that it was a harvest moon. It was a glowing yellowish color. It looked very distince against the black sky. i thought it was extremely beautiful, yet somewhat eerie.