(Don't Use Canvas to contact me, use email link)
Office: LD 156-S, 278-9244
Class: LE 101, Tu,Th 10:30 - 11:45
http://woodahl.physics.iupui.edu
Is the University open/closed today?
Final Exam on Thursday, May 3rd from 10:30 AM to 11:45 AM
Final Exam is NOT comprehensive (Yippee!), hence let's call it "Exam 3"
Be on time, no admittance to LE 101 after 10:45 AM (if late, you'll earn a zero)
Same Format: 50 questions, multiple choice, review your notes following Exam 2 material
Rememberize to bring a #2 pencil
''.. I brought my pencil, gimme something to write on, man ..'' OpScan sheets will be provided, pick one up when you enter
Final letter grades will be available to you through Canvas at 8:00 AM, Wednesday, May 9th.
Neither final letter grades, nor Exam 3 scores, will be posted here.
This web-site is now dormant until January of 2019.
4 questions, multiple choice, don't worry about reviewing your notes (it will be easy, trust me)
4 questions, multiple choice, review your notes from the previous two lectures
4 questions, multiple choice, review your notes from the previous three lectures
Evidence for the Big Bang Theory: Penzias and Wilson and their Microwave Antenna
Spectrum of Microwave Radiation Closely Matches Big Bang Theory
"High-Tech" Big Bang Detector in Your Home: Snowy Channel on an Antenna-Fed TV (1% is CMBR)
Gravity: Binds Objects with Mass (Motorcycle's Front Wheel Overcomes Gravity)
Electromagnetic: Binds Electrons to Protons to Form Atoms (Beryllium Atom)
Strong: Binds Quarks to Form Protons, Neutrons, and Nuclei (Helium Nucleus)
On a single 8.5" x 11" sheet of paper, in approximately 100 words, TYPED, explain in your own words the "Unruh Effect" and its connection to the temperature of a black hole. Make sure you include your full name (upper righthand corner), please turn in to me at the beginning of either the Tues or Thurs lectures, but the last day (due date) is Thursday April 19th at the beginning of class. Every reasonable submittal will earn 10 bonus points.
4 questions, multiple choice, review your notes from the last two lectures
The Jets of Cygnus A (color enhanced, microwave frequencies)
Looking for Quasars and Radio Galaxies: Australia's Telescope Compact Array (ATCA)
Massive Star Collapses Forming Black Hole: Jets Along Rotation Axis Produce Gamma-Ray Long-Burst
Gamma-Ray Short-Burst: Collision Involving Neutron Stars & Black Holes
Average was 45 out of 65 (69%). Quizzes 1-8, Exam 1, and Exam 2 sorted by last 4 digits of IUPUI Student ID Number. Note: The exam score listed is the RAW number -- to obtain the percentage, divide the RAW number by 65 and then multiply by 100%.
Reminder: Exam 3 (Final Exam) will be on Thursday, May 3, from 10:30 AM to 11:45 AM, same room (you must be in the room by 10:45 AM or you will receive a zero).
Take all your quizzes, drop the lowest score, and compute the average (e.g. say it is 3.25), divide that number by 4 and then multiply by 100% (e.g. 3.25/4 x 100% = 81.25%), this is your quiz average percentage. Next, take Exam 1 raw score and divide by 65 and then multiply by 100%. Then take the Exam 2 raw score and divide by 65 and then multiply by 100%. Take both exam scores, add them, and divide by 2 (this will be your exam average percentage). Now we apply the weighting. Exams count for 75% of your score and quizzes count for 25%. Take your quiz average percentage (e.g, 81.25) and multiply by 0.25. Then take your exam average percentage and multiply by 0.75. Add those two results and that is your current numerical score in the class. For a score from 90 to 100, that is an A, and the 80 to 89 is the B range and so on. If you want to get technical, A- is 90 to 93, B+ is 87 to 89, and so on. Now if you want to get super technical, I have an undisclosed big curve for the C range, a moderate curve for the B range, and a very tiny little curve for the A range. Thus what you compute, is actually the "worst case" scenario for your grade.
A Globular Cluster in Milky Way: Omega Centauri (NGC5139), Visible by Unaided Eye
LSS of Universe: Clusters & Superclusters that Neighbor the Milky Way (Near-Infrared Frequencies)
65 questions, multiple choice, review your notes following Exam 1 material
Rememberize to bring a #2 pencil
''.. I brought my pencil, gimme something to write on, man ..'' OpScan sheets will be provided, pick one up when you enter
4 questions, multiple choice, review your notes from the last four lectures
Dark Matter (Imagine that the green/yellow/orange strands are dark and you cannot see them.)
Spiral Structure of Milky Way Galaxy -- possibly a "Barred-Spiral"
4 questions, multiple choice, review your notes from the last two lectures
Schwarzschild: Discovered Event Horizon of Black Hole (Schwarzschild Radius)
General Relativity Allows for Wormhole Solutions for Faster than Light Travel
"Back To The Past": General Relativity Allows for Wormhole Solutions for Time Travel
Edwin Hubble: Determined M31 Was a Galaxy 2 Million Light-Years Away
4 questions, multiple choice, review your notes from the last two lectures
4 questions, multiple choice, review your notes from the last lecture
Average was 50 out of 65 (77%). Quizzes 1-4 and Exam 1, sorted by last 4 digits of your Official IUPUI Student ID Number (this is not your SS# or your JAG TAG). Note: The exam score listed is the RAW number -- to obtain the percentage, divide the RAW number by 65 and then multiply by 100%.
Reminder, Exam 2 date (subject to change) is currently scheduled for March 27.
How to compute your current numerical grade in this course: As spelled out in the course syllabus, quizzes count for 25%, Exam 1 counts for 25%, Exam 2 counts for 25%, and Final Exam (Exam 3) counts for 25%. Some background: Not recognized by some IUPUI faculty, the default way that Canvas computes a student's current grade is not realistic. At any point in the semester, Canvas simply takes the current earned points and divides it by the available points (without addressing the weighting issue). In other words, it treats quiz points as equal to exam points. The correct way to determine your current numerical grade (right now) is to convert your score on Exam 1 and the four quizzes into percentages and apply the weighting: Take your quizzes and compute the average (e.g. say it is 3.25), divide that number by 4 and then multiply by 100% (e.g. 3.25/4 x 100% = 81.25%). Next, take Exam 1 raw score and divide by 65 and then multiply by 100%. Now we must apply the weighting. In the end, exams will be 75% or your score and quizzes will be 25%. So we need to apply this weighting. Take your quiz percentage (e.g, 81.25) and multiply by 0.25. Then take your Exam 1 percentage score and multiply by 0.75. Add those two results and that is your current numerical score in the class (with the correct weighting). For a score from 90 to 100, that is an A, and the 80 to 89 is the B range and so on. If you want to get technical, A- is 90 to 93, B+ is 87 to 89, and so on. Now if you want to get super technical, I have an undisclosed big curve for the C range, a moderate curve for the B range, and a very tiny little curve for the A range. Thus what you compute, is actually the "worst case" scenario for your grade.
An Interstellar Medium Containing Carbon Monoxide (Radio Frequencies)
Atmospheric Scattering of Light: Blue Daytime Skies and Red Dawn
65 questions, multiple choice, review all your notes
Rememberize to bring a #2 pencil
''.. I brought my pencil, gimme something to write on, man ..'' OpScan sheets will be provided, pick one up when you enter
4 questions, multiple choice, review your notes from the last four lectures
Absolute Brightness or Luminosity Versus Apparent Brightness
Traditional H-R Diagram with the Absolute Magnitude Scale (on right-hand side)
The Red SuperGiant Betelgeuse (Hubble): Diameter is Larger than Jupiter's Orbit Around the Sun
4 questions, multiple choice, review your notes from the last FOUR lectures
Stars with Higher Surface Temperatures Emit Mostly Shorter Wavelengths
Mass Information from Doppler Shift of Spectra from a Binary Star System
4 questions, multiple choice, review your notes from the past two weeks
In particular, look over proton-proton chain and the four forces -- notably gravity (binds mass) and electromagnetic (binds electric charges)
Einstein (in 1904): Speed Of Light is the "Speed Limit of Our Universe"
Visible Light is a Small Part of the Entire Electromagnetic Spectrum
Isaac Newton (in 1670): White Light Contains All the Visible Colors (Visible Frequencies)
James Maxwell (in 1860): Father of the Famous Maxwell Equations Governing the Behavior of Light
Niels Bohr (sitting with Einstein): Architect of Modern Theory of Atomic Physics
Photon (wavy line) Being Absorbed by Atom -> Electron (solid blue line) Jumps Up into Higher Orbit
Atom Emitting a Photon (wavy line) -> Electron (solid blue line) Jumps Down into Lower Orbit
4 questions, multiple choice, review your notes from last week's two lectures
Know: temperature scales: Kelvin (absolute), Fahrenheit, Celsius; Galileo (first to watch sunspots -- rotation rate); multiplying large numbers; and temperature of the Sun at various locations
The 4 Fundamental Forces Occur Only at Moderately Low Temperatures
Sun's Proton-Proton Chain Fusion Reaction (4 Protons Produce Helium + Energy)
Ray Davis, 2002 Nobel Prize in Physics for the Detection of Cosmic Neutrinos During 1960's
Quarks Fundamental Particles, Three Quarks in Every Proton and Neutron
Astronomy, the Oldest of the Sciences, 5000 Years Old: Stonehenge
Approaching Modernity: Galileo Galilei's 1610 AD Notebook Page (Who Needs Computers?)
Magnetic Field Lines "Trap" Moving Charged Particles (Thus They Spiral)
Coronal Mass Ejection (Orange Disc is Photosphere, Red Disc is Chromosphere, X-Ray Photography)
Syllabus (PDF). Please print and keep with your notes.
Master Schedule (PDF). Please print and keep with your notes.
These documents will likely change/update throughout the semester. Please check that you have the latest versions.
Check here ( http://woodahl.physics.iupui.edu/Astro105/ ) for the latest information regarding our particular class cancellation(s)
Weather related cancellations will be announced on this page -- Please do not email me asking if class has/will be cancelled
Many thanks to Ryan Bertram (Astro A100 student), who introduced me to this neat YouTube video (courtesy of Rob Bryanton, Canadian author) that discusses the ten possible dimensions of our universe.
Many thanks to Tim McCormick (Astro A100 student), who introduced me to this fantistic webpage that models early solar system formation.
Many thanks to Elizabeth Potter (Astro A105 student), who showed me this neat webpage highlighting the relative sizes from the Local Group down to Quarks (and the corresponding orders of magnitude, or powers of ten)
Department of Physics, IUPUI - Updated on April 20, 2018 at 8:20 AM EDT