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### 1.13 Astro 1

Course: ASTRO 1, Spring 1999
School: Penn State
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Word Count: 305

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Astro 1, Section 1, Professor Brandt Wednesday January 13th 1999 Announcements: Lecture notes: How big is the Universe? How small are we? Demonstration of how to find the Big Dipper Title of class We will cover atoms (5x10 -9cm) to galaxies (1x1023 cm) 100 000 000 000 000 000 000 000 cm in a big galaxy want a way to write down very large numbers without all the zeroes --called &lt;a...

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Astro 1, Section 1, Professor Brandt Wednesday January 13th 1999 Announcements: Lecture notes: How big is the Universe? How small are we? Demonstration of how to find the Big Dipper Title of class We will cover atoms (5x10 -9cm) to galaxies (1x1023 cm) 100 000 000 000 000 000 000 000 cm in a big galaxy want a way to write down very large numbers without all the zeroes --called <a href="/keyword/scientific-notation/" >scientific notation</a> To use <a href="/keyword/scientific-notation/" >scientific notation</a> count the zeroes Examples: 10cm = 1 x 101 cm 100 cm = 1 x 10 2 cm 1000cm = 1 x 103cm Million stars in glob cluster = 1000000 stars = 1x10 6 stars for 2 billion stars = 2x109 for 2.5 billion stars = 2.5x109 Now we also want to be able to do simple math with <a href="/keyword/scientific-notation/" >scientific notation</a> to get relative sizes radius of earth is 6x108cm radius of solar system is 6x1014 How many times bigger is radius of solar system than the radius of the earth? =1x106 Simple rule is 10a/10b = 10(a-b) in the above example 14-8 = 6 so 1x106 solar system radius is about a million times larger than the earth's radius A few more useful numbers distance to nearest star = 4x1018 cm size of a galaxy = 3x1022 cm distance to nearest galaxy = 2x1023 cm So how much bigger is the distance to the nearest galaxy as the size of our galaxy 2x1023 / 3x1022 = 2/3 x101 = 6.6 Scale model of solar system Earth is 1/10 of a cm in size The solar system is the size of campus Where is the nearest star? about the distance to Los Angeles Discuss Video Lots of distances in that video In this course you will learn how people actually measure those giant distances Today we'll start with a well known method to astronomers called parallax Parallax = a method for finding the distances to fairly nearby objects like planets and some stars. Far away objects move less. Astronomers use the same effect with 2 telescopes to determine distances
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Penn State - ASTRO - 1
Astro 1 Section 1 Professor BrandtFriday January 22nd 1999Announcements: Lecture notes: Class 6. Today we will answer several important questions How is light made? How fast is light? How can light have different colors? How do we perceive colors
Penn State - ASTRO - 1
Astro 1 Section 1 Professor BrandtMonday February 1st 1999Announcements: Lecture notes: Class 10Moving on to stars Title is why does the Sun Shine? Will start giving the basic properties of the sun Sun is basically a big ball of gas Radius = 700
Penn State - ASTRO - 1
Astro 1 Section 1 Professor BrandtMonday January 25th 1999Announcements: Lecture notes: Class 7 Title of class is chemistry from afar This seems odd this is not a chemistry course but astronomers do use chemical clues to learn what things are made
Penn State - ASTRO - 1
Astro 1 Section 1 Professor BrandtWednesday January 27th 1999Announcements: Lecture notes: Class 8 What to expect on exam 50 questions multiple choice Emphasis on material from class 5-8 questions on material in book not covered in class main topi
Penn State - ASTRO - 1
Astro 1 Section 1 Professor BrandtFriday January 15th 1999Announcements: Lecture notes: Four Basic Important Questions Why day and night? What causes the seasons? Why different stars in summer and winter? What makes phases of moon?Four Basic Imp
Penn State - ASTRO - 1
Astro 1 Section 1 Professor BrandtMonday January 18th 1999Announcements: Lecture notes: Class 4.Earth has a 13 mile equatorial bulge due to its rotation Last time we learned about rotation axis of the Earth and how it is tipped by 23.5 degrees f
Penn State - ASTRO - 1
Astro 1, Section 1, Professor BrandtMonday January 11th 1999Announcements: Lecture notes:Astro 1 &quot;big&quot; questions How do stars form? What makes the Sun and stars shine? Why do some stars explode as supernovae? Do black holes exist? Is there a gia
Penn State - ART - 112
Art History 112SECTION 3 Wednesday April 28, 1999 Announcements: slide sheets were made available Lecture notes: Paul Gauguin &quot;The Yellow Christ,&quot; Paul Gauguin, 1888-89 response to Van Gogh's non-local color Gauguin use art to investigate emotion, f
Penn State - ART - 112
Art History 112SECTION 3 Thursday April 22, 1999 Announcements: the format of the final exam will be approximately as follows: o 2 terms to define o 5 identifications o 1 compare/contrast essay o 2 comprehensive essays on broad topics o time: about
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Art History 112SECTION 3 Monday April 19, 1999 Announcements: none Lecture notes: The green text refers to slides displayed during lecture.Barbizon (continued) naturalistic landscape painting precursor to Impressionism members participated in &quot;ple
Penn State - ART - 112
Art History 112SECTION 3 Thursday April 8, 1999 Announcements: meet at Palmer Sculpture Garden for next week's recitation we will get our exams back then there is a homework assignment-get the worksheet from Emiliy Lecture notes: The green text refe
Penn State - ART - 112
Art History 112Monday April 5, 1999 Announcements: none Lecture notes: The green text refers to slides displayed during lecture.Neoclassicism (esp. David) linear spirit of reform &quot;The Sabine Women&quot;, David, date not giveno o o ocreated after Dav
Penn State - ART - 112
Art History 112Thursday, March 25, 1999 Announcements: we are responsible for knowing information on artists Constable and Turner for the exam (as discussed in section last week), even though we will likely not get that far in the lecture second mid
Penn State - ART - 112
Art History 112Monday, March 29, 1999 Announcements: second mid-term will be held in class on Wednesday, March 31st bring a blue book for the exam know through Jacques-Louis David (plus Constable and Turner) on the slide list Lecture notes: The gree
Penn State - ART - 112
Art History 112Monday, March 22, 1999 Announcements: make sure you have a list of slides for next week's (March 31) midterm exam there will be a review of some of the material in this week's section Lecture notes: Rembrandt technical innovation huma
Penn State - ART - 112
Art History 112Wednesday, March 17, 1999 Announcements: none Lecture notes: The green text refers to slides displayed during lecture.The Maids of Honor, Velazquez, 1656 informal moment in palace life - Enfante with maids in waiting Velazquez's stu
Penn State - ART - 112
Art History 112Thursday, February 25, 1999 Announcements: for next class (3/4): meet at Palmer Museum (not 234 Arts) no homework assignment Recitation notes: Story of Susanna Gentileschi she appears to be resisting violation of privacy architectural
Penn State - ART - 112
Art History 112Monday, March 1, 1999 Announcements: received exams back in class for section this week: meet at Palmer Museum of Art Lecture notes: The green text refers to slides displayed during lecture.Baldacchino/Tabernacle, Baldini, St. Peter
Penn State - ART - 112
Art History 112Monday, February 22, 1999 Announcements: exams will be returned to us on Monday, March 1 examples of excellent (or &quot;A&quot;) exams will be available on reserve in the Art History library for us to consult Lecture notes: The green text refe
Penn State - ART - 112
Art History 112Thursday, February 11, 1999 Announcements: for the exam o bring blue book(s) o come early if possible, will start on time and you will miss slides o see the course website for the image of Brunelleschi's Dome-is on the slide sheet for
Penn State - ART - 112
Art History 112Monday, February 15, 1999 Announcements: exam on Wednesday bring a blue book; write in pen check web site for Brunelleschi's Dome Lecture notes: The green text refers to slides displayed during lecture.Northern Renaissance does not
Penn State - ART - 112
Art History 112 Recitation Section 003Thursday, January 21, 1999Announcements: the course web site will contain some of the images discussed in class, though not included in the text book (http:/www.courses.psu.edu/art_h/art_h112_cbl6) the Art His
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