Aug 27: Project 1: Scale Model (homework, due Wednesday) pre-test: http://www.physics.csbsju.edu/assess/ADT2.html Read Chapter 1 expect a quiz Wednesday (and every day for a couple of weeks) decide on a lab group (sign up Wednesday) Aug 29: handouts: Horizon & Equator Coordinate Systems ("Sky Vocabulary"), sky maps same as: Spherical astronomy terms http://www.physics.csbsju.edu/astro/terms.html Project 2: Sky Maps (in class) homework: read: tutorial: sky vocabulary starts at http://www.physics.csbsju.edu/astro/CS/CSintro.html tutorial & quiz: sky map: starts at http://www.physics.csbsju.edu/astro/sky/sky.01.html the textbooks coverage of these topic is spotty, but for another viewpoint: text: p 31-40, 103-136 mostly we'll be following the sequence online Aug 31: handouts: star finder + manual Project 3: Star and Planet Locator (in class) homework: tutorial & quiz: star finder: starts at http://www.physics.csbsju.edu/astro/SF/SF.01.html Sign up for a Night Lab Group ? (labs depend on class size) Sep 3 Lab signup (labs start next week) handouts: SC001 + SC002 Project 4: Right Ascension & Declination (in class) homework: tutorial & quiz: SC001 star map: starts at http://www.physics.csbsju.edu/astro/SC1/SC1.01.html tutorial & quiz: SC002 star map: starts at http://www.physics.csbsju.edu/astro/SC2/SC2.01.html Under the "videos" link on the class web page watch: Moon_Home_Lab If you're using a obsolete browser (like IE or Edge) click on the mp4 file if you're using a modern browser (like chrome or firefox or safari) use the webm file. Note: this deals with the Moon Motions home lab and you may feel you lack background to fully understand what's discussed. Be assured we'll be doing an in class project on this material, but you will have homework on it due Friday. Remark: we're in the process of covering the material that in the textbook makes up chapters 2-4. My take on this material is a bit different from our textbook's. You should in the end read all those textbook chapters. Let me suggest you start with pp. 31-41, 104-124 soon. Sep 5 handouts: Home Lab Manual Project 5: Moon Motions Project Practice (start in class, finish at home) Under the "videos" link on the class web page watch: Polar_Home_Lab If you're using a obsolete browser (like IE or Edge) click on the mp4 file if you're using a modern browser (like chrome or firefox or safari) use the webm file. online read text (no quizzes!): compare: SC and Sky Map tutorial: latitude & your sky Simon Newcomb on the Revolution of the Earth round the Sun Sep 7 in class matching sky vocabulary quiz similar to online: Quiz on sky terms handouts: Polar Project Practice (Project 6) (start in class, finish at home) homework: Under the "videos" link on the class web page watch: seasons : culminate1B If you're using a obsolete browser (like IE or Edge) click on the mp4 file if you're using a modern browser (like chrome or firefox or safari) use the webm file. Lab starts next week; Exam 1 in three weeks (Wed Sep 26) Sep 10 in class culmination quizzes start Lab 1 at the Observatory tonight homework: online (2 quizzes): "Name These Moons Quiz" under: Piagetian-based diagnostic quizzes...3. Martian Moons Under the "videos" link on the class web page watch: moon_unlD2 If you're using a obsolete browser (like IE or Edge) click on the mp4 file if you're using a modern browser (like chrome or firefox or safari) use the webm file. Note: there are additional culmination quiz videos here also: culminate1B & culminate2B Sep 12 in class culmination quizzes continue homework: online "Moon Quiz" Under the "videos" link on the class web page watch: moon_phase_SH+NH2 If you're using a obsolete browser (like IE or Edge) click on the mp4 file if you're using a modern browser (like chrome or firefox or safari) use the webm file. Note: we will not be returning to the class web site for quizzes & videos for a couple of weeks! Read all of textbook: chapter 2 we'll be particularly working on the material in pp 42-60 note that the seasons material we've done in class is textbook pp 103-114 the moon material is sections 4.5 & 4.7 Sep 14 in class culmination quizzes continue Previous: How objects in the sky seem to move: *phenomenology* Topics: How the "Greeks" *explained* sky motions: Ptolemy, geocentric, epicycle, deferent, equant, retrograde motion, conjunction (2x), opposition, inferior/superior planet No online quizzes or additional reading Next up: textbook chapter 3 Sep 17 in class culmination quizzes continue Note: In discussing astro history, we've returned to the text book p.54 Copernicus p.57 Galileo p.70 Tycho p.71 Kepler p.76 Newton In particular p.87 has the data for 8 of the 9 planets you are to plot for the Kepler's 3rd Law Project Table F4 (p.1154) has Pluto (F3 repeats the 8 planets) Read textbook chapter 4 (the only new material should be on tides) Sep 19 in class culmination quizzes continue exam 1: in one week Galileo: different mass, same motion with force of gravity; x & y directions separate galilean invariance; acceleration; experiments! newton's four laws tides 3 great conservation laws: energy, linear momentum, angular momentum energy: thermal, kinetic, potential (gravitational, electric+magnetic, nuclear, chemical, ...) linear momentum: mv (conserve if no external force) angular momentum (mr^2)x(#rpm) (conserve if no external torque) ice skater effect Sep 21 NO culmination quiz (did happen) help for exam 1? more on Galileo & Newton tides precession angular momentum angular momentum (mr^2)x(#rpm) (conserve if no external torque) ice skater effect entropy: 2nd law of thermodynamics high temperatures break apart composites We will be starting chapter 5 "soon" (so read it!), but we'll start a bit unconventionally ---Exam 1 Sep 26--- Oct 1 somehow I managed to schedule Night Lab 2 for Monday 8 Oct (which is a Free Day) It will instead occur the following week: Monday 15 Oct Wednesday 10 Oct (immediately following the Free Days) is still a GO In class: see and draw the spectra project homework online: "Spectra Quiz II (Spectrometer)" Note: I'll assign "Spectra Quiz I (Blackbody)" next time. I'm doing them in reverse order as students found I harder than II Oct 3 The in-class lab schedule now correctly says we have labs in one week on 10 Oct and in 12 days on 15 Oct. homework online: "Spectra Quiz I (Blackbody)" You have a Big Quiz coming up on spectra/atoms/telescopes It will probably be Friday 12 Oct. We will also start quizzes on "Constellations to Know" (see under "Exam 2..." on the class web site) after that Big Quiz. Finally we are approaching the previously extended last possible day to start the Polar Motion Home Lab. Oct 5 starting ch. 6 on telescopes Oct 10 in class project on lenses Exam 2 in two weeks Night Lab 2 at observatory tonight Today is the listed last possible day to start the Moon Motion Home Lab. I can extend this only about a week, as it takes a month of observations and is due before Thanksgiving. Polar Motion Home lab start is, I think, over as it is supposed to be cloudy the rest of the week. Oct 12 Big Quiz on spectra/atoms/telescopes start chapter 15: the Sun Oct 15 start chapter 16: the Sun (nuclear) start constellation quizzes (these will continue daily until Exam 2) http://www.physics.csbsju.edu/astro/constellations/ Night Lab 2 at observatory tonight Oct 17 start chapter 17: star light continue constellation quizzes (these will continue daily until Exam 2) Exam 2 in one weeks...help? note: video solutions to Big Quiz and both online spectra quizzes I & II Oct 19 start chapter 18: HR diagram (last chapter on exam2) continue constellation quizzes (these will continue daily until Exam 2) Exam 2 help: Tuesday 8:15 Remark: we're a couple of days ahead of where we were in 2017... take a look at the following questions from exam3: 6, 17, 22, 29 Oct 22 continue chapter 18: HR diagram (last chapter on exam2) continue constellation quizzes (these will continue daily until Exam 2) Exam 2 help: Tuesday 8:15 Remark: we're a couple of days ahead of where we were in 2017... take a look at the following questions from exam3: 6, 17, 22, 29 Oct 24 Exam 2: chapters: 5,6, 15 thru p 668 (i.e., chapter 18+parallax) Oct 26 chapter 20: gas & dust between the stars Oct 29 chapter 21: stars are formed from giant molecular clouds Note: under Exam 3... find "Stars to know" The project for exam3 is to memorize the Spectral Type and corresponding location in the sky of these 17 stars. All but 3 stars (Sun, Polaris, Algol) are part of a "connection" Future in-class quizzes will present "dots + lines" for these three connections (e.g., http://www.physics.csbsju.edu/astro/stars/negatives/hexL_l.gif ) and you will be asked to label the appropriate dot with the star's name and spectral type, and name the constellation that includes the star. The three "unconnected" stars will be the initial quiz on these stars. We are now well past the listed last possible start date for the Moon Motions home lab. However if you act immediately you still could complete the lab before its due date. Note that observation sketches or photos must be contemporaneously emailed to me if they are to be included in the graded work. Oct 31 chapter 22: stars in old age Nov 2 Plan on starting "stars to know" quizzes Wed Nov 7. The first quiz will involved the "unconnected" stars: Sun, Polaris, Algol. For the last two: given the constellation label the star and give its spectral type. Note carefully the location of Algol..in the past it has often been mis-labelled chapter 23: star death Next: I will skip chpater 24, and move on to chapter 25: Milky Way galaxy. We will spend at least one class on the history of "discovering" our galaxy. Exam3 will cover from stellar evolution thru galaxies. Nov 5 Plan on starting "stars to know" quizzes Wed Nov 7. chapter 25: Milky Way Nov 7 first "stars to know" quiz...will continue each day for a week Milky Way history Nov 9 "stars to know" quiz...summer triangle Milky Way history Nov 12 "stars to know" quiz...big arc Milky Way history, start chapter 26: galaxies Labs this week...tonight 8:30 exam 3: one week! questions from online exam3 that were covered in your exam2: 6, 17, 22, 29 Note: questions on spectral type & HR (like 6 & 22) would still be fair game for your exam3, but you saw #29 on your exam2 and there will be no equivalent question on your exam3 The online exam3 did not cover types of galaxies (chapter 26) but your exam3 will cover that material. Nov 14 "stars to know" quiz...winter hex chapter 26: galaxies Labs this week...tonight 8:15 & 9:30 Nov 16 Exam 3 Monday...Help: Sunday 5pm chapter 24: relativity Nov 19 exam3 textbook: p 669-chapter 26 (except chapter 24) you should be doing your last Polar Home Lab observations at the same *CST* as one of your earlier observations. Check out the practice Home Labs you completed in week 2, and the associated videos Start completing the calculations for your Home Labs Nov 26 chapter 27 active galaxies: quasars, Seferts...unified as black hole AGN unusual: shapes (lobes, jets), colors (of all sort: X-ray, UV, IR, radio...light not from stars) emission lines (broad & narrow)...again not from stars time variation (implying small size) Nov 28 AGN Nov 30 chapter 28 large scale structure/distribution of galaxies a homogeneous universe (no edge) but with superclusters, voids, walls, filaments at large scale dark matter again, galaxy formation stressing mergers expansion acceleration: data from type Ia supernovas, the expansion is accelerating not decelerating dark energy (cosmological constant: a repulsive form of gravity noticeable over large scales) Dec 3 chapter 29: big bang starting from 1 second neutrino decoupling (neutrinos fly free: an unmined artifact from the early universe) end of antimatter (why were matter/antimatter nearly co-equal?) first composite nuclei: 3 minutes deuterium bottleneck; 3 alpha bottleneck; composition of resulting products #2 source of info about early universe matter dominates universe become transparent (light flies free which we now see as microwave background; wavelengths stretched by 1000) Dec 5 the microwave background (particularly evidence of sound in that plasma) is the #1 source of info about the early (400,000 year old) universe There are exacting measurements of the temperature of this light and the very slight (1 part in 100,000) inhomogenities that represent sound in the early universe. Simulations show that these inhomgeneities are the seeds of large scale structure we see today dark ages (transparent universe, but before stars form) first stars (< 1 billion years after BB) going backward from 1 second first composites form (protons & neutrons: 3 quarks ~ 1/1000000 second) 3 forces (EM, weak, strong) have analogous mathematical structure at sufficiently high temperatures they should be indistinguishable: one force from 3 While gravity shows hints of a similar math nature (gauge symmetry), it still seems quite different no sign of a workable quantum theory of gravity, nevertheless majority seems to believe that gravity will become co-equal with the other forces at sufficiently high temperature Inflation: the hypothetical bigger bang in the very early universe responsible for what wee see as unusual connectedness of divergent parts of universe (horizon problem) and apparent flatness of universe Dec 7 review BB start chapter 30 Drake equation Dec 10 origin of life; darwin v pasteur, "warm pond" monomers -> polymers sounds like a 2nd law of thermo violation requires energy input (ATP) biological molecules: lipids (fats), carbohydrates (sugars), amino acids (protein) base-pair triplets of DNA/RNA determine amino acid order in proteins, hence structure RNA world? difficulty of cooperation as seen in "recent" eukaryote development mitochondria as "parasites" Alternative final time: Friday 1pm Help Sunday 5pm